Detection method, detection device and detection system based on transmission imaging

Abstract

The present application provides a detection method, a detection device, and a detection system based on transmission imaging. Based on the present application, a first transmission imaging component can be used to perform transmission imaging on a target portion of an object to be inspected that is in a first detection position. The first transmission imaging data generated by the first transmission imaging component can be used to adjust the transmission imaging parameter configuration set used by the second transmission imaging component. Moreover, when the target portion reaches the second detection position, the second transmission imaging component can perform transmission imaging on the target portion based on the transmission imaging parameter configuration set to obtain second transmission imaging data for generating a detection image. Since the second transmission imaging data is generated based on a transmission imaging parameter configuration set that is adapted to the target transmission portion, it helps to achieve the desired clarity, contrast, and other indicators in the presentation effect of the internal structure information of the target portion represented by it in the detection image, thereby helping to improve the imaging quality of the detection image.

Description

Technical Field

[0001] The present application relates to the field of detection, and in particular to a detection method based on transmission imaging, a detection device based on transmission imaging, and a detection system based on transmission imaging. Background Art

[0002] Transmission imaging of an object, such as an X-ray, can be used to obtain information about its internal structure. For example, in security inspections, the object could be a package or a portable bag, and transmission imaging can be used to detect dangerous or hazardous items inside. Another example is industrial inspection, where the object could be food or industrial parts, and transmission imaging can be used to detect foreign matter inside food or structural defects in industrial parts.

[0003] The imaging quality of transmission imaging is affected by the transmission imaging parameters. If the configured transmission imaging parameters cannot enable the transmission rays to properly penetrate the object to be inspected and trigger reasonable induction imaging, the presentation effect of the internal structure information of the object to be inspected in the inspection image cannot achieve the expected clarity and contrast, resulting in low inspection image quality.

[0004] Therefore, how to improve the imaging quality of transmission imaging by configuring transmission imaging parameters has become a technical problem to be solved in the prior art. Summary of the Invention

[0005] In view of this, each embodiment of the present application provides a detection method based on transmission imaging, a detection device based on transmission imaging, and a detection system based on transmission imaging, which helps to improve the imaging quality of transmission imaging.

[0006] In one embodiment, a detection method based on transmission imaging is provided, comprising:

[0007] Acquire first transmission imaging data obtained by the first transmission imaging component from a target portion of the object to be inspected at a first detection position, wherein the first detection position is a pre-detection position before the target portion reaches a second detection position;

[0008] Determining, based on the first transmission imaging data, a transmission imaging parameter configuration set adapted to the target site for a second transmission imaging component corresponding to the second detection position;

[0009] The transmission imaging parameter configuration set is controlled to take effect in the configuration of the second transmission imaging component, so that the second transmission imaging component performs transmission imaging of the target part based on the transmission imaging parameter configuration set in response to the target part reaching the second detection position from the first detection position, and obtains second transmission imaging data for generating a detection image of the object to be inspected.

[0010] Optionally, determining a transmission imaging parameter configuration set adapted to the target part for the second transmission imaging component corresponding to the second detection position based on the first transmission imaging data includes: determining the object part attributes of the object to be inspected at the target part based on the first transmission imaging data; and determining the transmission imaging parameter configuration set based on the object part attributes.

[0011] Optionally, the object part attributes include at least one of part attenuation attributes and part structural attributes, wherein the part attenuation attributes are used to characterize the attenuation ability of the transmitted rays at the target part, and the part structural attributes are used to characterize the material structure of the target part; determining the object part attributes of the object to be inspected at the target part based on the first transmission imaging data includes: determining at least one of the part attenuation degree of the transmitted rays generated by the first transmission imaging component at the target part, the equivalent atomic number of the target part, and the part structural topology of the target part based on the first transmission imaging data; determining at least one of the part attenuation attribute and the part structural attribute based on at least one of the part attenuation degree, the equivalent atomic number and the part structural topology.

[0012] Optionally, the determining of at least one of the site attenuation attribute and the site structural attribute based on at least one of the attenuation degree, the atomic number and the structural topology includes: determining the site equivalent penetration thickness corresponding to the site attenuation degree, and / or determining the atomic number value of the equivalent atomic number, and / or determining the site structural complexity corresponding to the site structural topology, and / or determining the number of site material types corresponding to the equivalent atomic number; wherein the site attenuation attribute includes at least one of the site equivalent penetration thickness and the atomic number value; and the site structural attribute includes at least one of the site structural complexity and the number of site material types.

[0013] Optionally, the object part attributes include part attenuation attributes, wherein the part attenuation attributes are used to characterize the attenuation ability of the transmitted rays at the target part; determining the transmission imaging parameter configuration set based on the object part attributes includes: determining ray characteristic parameters that are compatible with the part attenuation attributes, wherein the ray characteristic parameters are used to configure the ray characteristics of the transmitted rays generated by the second transmission imaging component.

[0014] Optionally, the site attenuation attribute includes at least one of the site equivalent penetration thickness and the atomic number value of the target site; the determination of the ray characteristic parameters that are compatible with the site attenuation attribute includes: based on the site equivalent penetration thickness and the atomic number value, determining at least one of the ray energy spectrum and the ray intensity of the transmission ray generated by the second transmission imaging component, wherein the ray characteristic parameters include at least one of the ray energy spectrum and the ray intensity.

[0015] Optionally, the object part attributes include part structural attributes, wherein the part structural attributes are used to characterize the material structure of the target part; determining the transmission imaging parameter configuration set based on the object part attributes includes: determining imaging sensing parameters that are compatible with the part structural attributes, wherein the imaging sensing parameters are used to configure the sensing characteristics of the second transmission imaging component to the transmitted rays.

[0016] Optionally, the site structural attributes include at least one of the site structural complexity and the number of site material types of the target site; the determination of the imaging sensing parameters that are compatible with the site structural attributes includes: determining the imaging sensing parameters based on the site structural complexity and the number of site material types, wherein the imaging sensing parameters include at least one of the following parameters: the integration time of the second transmission imaging component for sensing imaging of transmitted rays, the imaging resolution of the second transmission imaging component for sensing imaging of transmitted rays, and the sensing sensitivity of the second transmission imaging component to transmitted rays.

[0017] Optionally, controlling the configuration of the second transmission imaging component corresponding to the second detection position of the transmission imaging parameter configuration set to take effect includes: determining the time when the configuration of the transmission imaging parameter configuration set takes effect based on the prediction result of the relative position change of the target part relative to the second transmission imaging component.

[0018] Optionally, multiple adjacent parts of the object to be inspected are sequentially used as the target parts, triggering the generation of the first transmission imaging data corresponding to each of the multiple parts, the determination of the transmission imaging parameter configuration set corresponding to each part, the effectiveness of the transmission imaging parameter configuration set corresponding to each part in the configuration of the second transmission imaging component, and the generation of the second transmission imaging data corresponding to each part; the detection method further includes: performing grayscale correction processing on the second transmission imaging data corresponding to the multiple parts of the object to be inspected to obtain transmission imaging correction data corresponding to the multiple parts, wherein the grayscale correction processing is used to compensate for the imaging grayscale differences between the multiple parts, and the imaging grayscale differences are associated with the parameter differences between the transmission imaging parameter configuration sets corresponding to the multiple parts; and using the transmission imaging correction data corresponding to the multiple parts to obtain a detection image of the object to be inspected.

[0019] Optionally, the first transmission imaging component is configured to generate corresponding first transmission imaging data based on a default transmission imaging parameter configuration set, with each of the multiple parts as the target part in turn; the grayscale correction processing is performed on the second transmission imaging data corresponding to the multiple parts of the object to be inspected to obtain the transmission imaging correction data corresponding to the multiple parts, including: taking the first transmission imaging data corresponding to each part of the multiple parts as correction reference data, performing grayscale correction processing on the second transmission imaging data corresponding to the part, and obtaining the transmission imaging correction data corresponding to the multiple parts.

[0020] In another embodiment, a detection device based on transmission imaging is provided, comprising:

[0021] A pre-acquisition module, configured to acquire first transmission imaging data obtained by the first transmission imaging assembly through transmission imaging of a target portion of the object to be inspected at a first detection position, wherein the first detection position is a pre-acquisition position before the target portion reaches a second detection position;

[0022] a parameter determination module, configured to determine, based on the first transmission imaging data, a transmission imaging parameter configuration set adapted to the target site for a second transmission imaging component corresponding to the second detection position;

[0023] a configuration management module for controlling the transmission imaging parameter configuration set to take effect in the configuration of the second transmission imaging component, so that the second transmission imaging component performs transmission imaging of the target portion based on the transmission imaging parameter configuration set in response to the target portion arriving at the second detection position from the first detection position, and obtains second transmission imaging data for generating a detection image of the object to be inspected.

[0024] Optionally, the parameter determination module includes: an attribute determination submodule for determining the object part attributes of the object to be inspected at the target part based on the first transmission imaging data; and an attribute adaptation submodule for determining the transmission imaging parameter configuration set based on the object part attributes.

[0025] Optionally, the object part attributes include at least one of part attenuation attributes and part structural attributes, wherein the part attenuation attributes are used to characterize the attenuation ability of the transmitted rays at the target part, and the part structural attributes are used to characterize the material structure of the target part; the attribute determination submodule is specifically configured to: determine at least one of the part attenuation degree of the transmitted rays generated by the first transmission imaging component at the target part, the equivalent atomic number of the target part, and the part structural topology of the target part based on the first transmission imaging data; determine at least one of the part attenuation attribute and the part structural attribute based on at least one of the part attenuation degree, the equivalent atomic number and the part structural topology.

[0026] Optionally, the property determination submodule is specifically configured to: determine the equivalent penetration thickness of the part corresponding to the attenuation degree of the part, and / or determine the atomic number value of the equivalent atomic number, and / or determine the part structural complexity corresponding to the part structural topology, and / or determine the number of part material types corresponding to the equivalent atomic number; wherein the part attenuation property includes at least one of the part equivalent penetration thickness and the atomic number value; and the part structural property includes at least one of the part structural complexity and the number of part material types.

[0027] Optionally, the object part attributes include part attenuation attributes, wherein the part attenuation attributes are used to characterize the attenuation ability of the transmitted rays at the target part; the attribute adaptation submodule is specifically configured to: determine ray characteristic parameters that are adapted to the part attenuation attributes, wherein the ray characteristic parameters are used to configure the ray characteristics of the transmitted rays generated by the second transmission imaging component.

[0028] Optionally, the site attenuation attribute includes at least one of the site equivalent penetration thickness and the atomic number value of the target site; the attribute adaptation submodule is specifically configured to: determine at least one of the ray energy spectrum and the ray intensity of the transmission ray generated by the second transmission imaging component based on the site equivalent penetration thickness and the atomic number value, wherein the ray characteristic parameters include at least one of the ray energy spectrum and the ray intensity.

[0029] Optionally, the object part attributes include part structural attributes, wherein the part structural attributes are used to characterize the material structure of the target part; the attribute adaptation submodule is specifically configured to: determine imaging sensing parameters that are adapted to the part structural attributes, wherein the imaging sensing parameters are used to configure the sensing characteristics of the second transmission imaging component to the transmitted rays.

[0030] Optionally, the site structural attributes include at least one of the site structural complexity of the target site and the number of site material types; the attribute adaptation submodule is specifically configured to: determine the imaging sensing parameters based on the site structural complexity and the number of site material types, wherein the imaging sensing parameters include at least one of the following parameters: the integration time of the second transmission imaging component for sensing imaging of transmitted rays, the imaging resolution of the second transmission imaging component for sensing imaging of transmitted rays, and the sensing sensitivity of the second transmission imaging component to transmitted rays.

[0031] Optionally, the configuration management module is specifically configured to determine a configuration effective time of the transmission imaging parameter configuration set based on a prediction result of a relative position change of the target site with respect to the second transmission imaging component.

[0032] Optionally, multiple adjacent parts of the object to be inspected are sequentially used as the target parts, triggering the generation of the first transmission imaging data corresponding to each of the multiple parts, the determination of the transmission imaging parameter configuration set corresponding to each part, the effectiveness of the transmission imaging parameter configuration set corresponding to each part in the configuration of the second transmission imaging component, and the generation of the second transmission imaging data corresponding to each part; the detection device further includes an image generation module, which is used to: perform grayscale correction processing on the second transmission imaging data corresponding to the multiple parts of the object to be inspected, to obtain transmission imaging correction data corresponding to the multiple parts, wherein the grayscale correction processing is used to compensate for the imaging grayscale differences between the multiple parts, and the imaging grayscale differences are associated with the parameter differences between the transmission imaging parameter configuration sets corresponding to the multiple parts; and use the transmission imaging correction data corresponding to the multiple parts to obtain a detection image of the object to be inspected.

[0033] Optionally, the first transmission imaging component is configured to generate corresponding first transmission imaging data based on a default transmission imaging parameter configuration set, with each of the multiple parts as the target part in turn; the image generation module is specifically configured to: use the first transmission imaging data corresponding to each of the multiple parts as correction reference data, perform grayscale correction processing on the second transmission imaging data corresponding to the part, and obtain the transmission imaging correction data corresponding to the multiple parts respectively.

[0034] In another embodiment, a detection system based on transmission imaging is provided, the detection system comprising:

[0035] An object carrying mechanism, used for carrying an object to be inspected;

[0036] A transmission imaging mechanism, used for performing transmission imaging on the relatively moving object to be inspected, wherein the transmission imaging mechanism comprises a first transmission imaging component and a second transmission imaging component arranged at intervals;

[0037] A processing component, wherein the processing component is used to execute the detection method as described in the above embodiment.

[0038] Optionally, the object carrying mechanism is configured to transport the object to be inspected relative to the transmission imaging mechanism, wherein the first transmission imaging component is located upstream of the second transmission imaging component in the transport direction of the object to be inspected.

[0039] Optionally, the first transmission imaging component includes a first sensing array, the second transmission imaging component includes a second sensing array, and: the first transmission imaging component also includes a first ray source that generates transmission rays to the first sensing array, the second transmission imaging component also includes a second ray source that generates transmission rays to the second sensing array, and the first ray source and the second ray source are independent of each other; or, the first transmission imaging component and the second transmission imaging component reuse a shared ray source.

[0040] Optionally, the shared ray source is time-shared by the first transmission imaging component and the second transmission imaging component by switching between the first detection position and the second detection position; or, the shared ray source generates transmission rays that are respectively directed to the first sensing array and the second sensing array.

[0041] Optionally, the first transmission imaging component and the second transmission imaging component are both arranged to perform transmission imaging of the object to be inspected in a vertical direction or a horizontal direction; or, one of the first transmission imaging component and the second transmission imaging component is arranged to perform transmission imaging of the object to be inspected in a vertical direction, and the other is arranged to perform transmission imaging of the object to be inspected in a horizontal direction.

[0042] Optionally, the processing component further generates an additional detection image having a different imaging angle from the detection image based on the first transmission imaging data generated by the first transmission imaging component having a different transmission imaging direction from the second transmission imaging component.

[0043] Optionally, the first transmission imaging component and the second transmission imaging component are arranged in pairs, forming at least two pairs.

[0044] Optionally, the processing component is configured to generate at least two detection images based on the second transmission imaging data provided by each second transmission imaging component, and fuse the at least two detection images into a fused image.

[0045] Optionally, the first transmission imaging component is associated with at least two second transmission imaging components deployed at intervals, wherein the transmission imaging parameter configuration set determined based on the first transmission imaging data is effective in the configurations of the at least two associated second transmission imaging components to generate an image sequence comprising at least two detection images for the object to be inspected, and the at least two detection images in the image sequence are used to be fused into a fused image based on time delay integration.

[0046] In another embodiment, a non-transitory computer-readable storage medium is provided. The non-transitory computer-readable storage medium stores instructions. When the instructions are executed by a processor, the processor is used to cause the processor to perform the detection method as described in the above embodiment.

[0047] Based on the above embodiment, a first transmission imaging component can be used to perform transmission imaging of a target portion of an object to be inspected at a first inspection position, wherein the first transmission imaging data generated by the first transmission imaging component can be used to adjust the transmission imaging parameter configuration set used by the second transmission imaging component. Moreover, when the target portion moves from the first inspection position to the second inspection position, the second transmission imaging component can perform transmission imaging of the target portion based on the transmission imaging parameter configuration set to obtain second transmission imaging data used to generate a detection image of the object to be inspected. The first transmission imaging data previously obtained can be used to analyze the properties and characteristics of the target portion of the object to be inspected, and thus the transmission imaging parameters used by the second transmission imaging component can be adjusted based on the first transmission imaging data so that the transmission imaging parameters are more compatible with the properties and characteristics of the target portion. Furthermore, since the second transmission imaging data is generated based on the transmission imaging parameter configuration set compatible with the target transmission portion, it helps to present the internal structural information of the target portion represented by the second transmission imaging data in the detection image, achieving the desired clarity and contrast, thereby helping to improve the imaging quality of the detection image of the object to be inspected. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] The following drawings are only provided for schematic illustration and explanation of the present application and do not limit the scope of the present application:

[0049] Figure 1 is a schematic diagram of an exemplary structure of a detection system based on transmission imaging in one embodiment;

[0050] Figure 2 For example Figure 1 A schematic diagram of an example of implementing transmission imaging parameter configuration in the detection system of the illustrated embodiment;

[0051] Figure 3 For example Figure 1 A schematic diagram of an example of the detection system in the illustrated embodiment using a scanning mode to perform detection;

[0052] Figure 4 For example Figure 1 A schematic diagram of an example structure of a processing component of the detection system in the illustrated embodiment;

[0053] Figure 5 For example Figure 1 A schematic diagram of a first deployment example of the detection system shown;

[0054] Figure 6 For example Figure 1 A schematic diagram of a second deployment example of the detection system shown;

[0055] Figure 7 For example Figure 1 A schematic diagram of a third deployment example of the detection system shown;

[0056] Figure 8 For example Figure 1 A schematic diagram of a fourth deployment example of the detection system shown;

[0057] Figure 9 For example Figure 1 A schematic diagram of a fifth deployment example of the detection system shown;

[0058] Figure 10 For example Figure 1 A schematic diagram of a sixth deployment example of the detection system shown;

[0059] Figure 11 For example Figure 1 A schematic diagram of a seventh deployment example of the detection system shown;

[0060] Figure 12 For example Figure 1 A schematic diagram of an eighth deployment example of the detection system shown;

[0061] Figure 13 FIG1 is a schematic diagram of an exemplary process of a detection method based on transmission imaging in another embodiment;

[0062] Figure 14 For example Figure 13 The detection method shown is a schematic diagram of the optimization process of transmission imaging parameter configuration;

[0063] Figure 15 For example Figure 13The detection method shown supports an extended flow chart of detection in scanning mode;

[0064] Figure 16 For example Figure 13 The detection method shown supports an example flow diagram of a security check configuration;

[0065] Figure 17 is a schematic diagram of an exemplary structure of a detection device based on transmission imaging in another embodiment;

[0066] Figure 18 For example Figure 17 Schematic diagram of the optimized structure of the detection device shown. DETAILED DESCRIPTION

[0067] In order to make the purpose, technical solutions and advantages of this application more clear, the application is further described in detail below with reference to the accompanying drawings and examples.

[0068] Figure 1 FIG. 1 is a schematic diagram of an exemplary structure of a detection system based on transmission imaging in one embodiment. Figure 1 In this embodiment, the detection system based on transmission imaging may include an object carrying mechanism 110 and a transmission imaging mechanism 120 that are relatively movable, and the detection system may further include a processing component 130.

[0069] The object carrying mechanism 110 can be used to carry the object to be inspected 100, and the transmission imaging mechanism 120 can be used to perform transmission imaging on the relatively moving object to be inspected 100 carried on the object carrying mechanism 110. For example, the transmission imaging mechanism 120 can use transmission rays such as X-rays to perform transmission imaging on the object to be inspected 100.

[0070] The transmission imaging mechanism 120 may include a first transmission imaging component 121 and a second transmission imaging component 122 that are spaced apart in the moving direction of the object to be inspected. The first transmission imaging component 121 and the second transmission imaging component 122 may each include one or more component units. Therefore, when the positions of at least one component unit in the first transmission imaging component 121 and at least one component unit in the second transmission imaging component 122 do not overlap, it falls within the meaning of the spaced arrangement mentioned in the embodiment of the present application. The first transmission imaging component 121 and the second transmission imaging component 122 can be used to cooperate with the processing component 130 to detect the object to be inspected, and the first transmission imaging component 121 is also used to cooperate with the processing component 130 to implement adaptive adjustment of the transmission imaging parameter configuration set used by the second transmission imaging component 122, that is, the transmission imaging parameter configuration set used by the second transmission imaging component 122 can be adaptively adjusted.

[0071] Thus, the second transmission imaging component 122 can perform transmission imaging of the object to be inspected 100 based on the transmission imaging parameter configuration set Conf_adp. In one embodiment, unlike the second transmission imaging component 122, the transmission imaging parameter configuration set used by the first transmission imaging component 121 does not need to have adjustable characteristics, but can select default values (i.e., pre-set available parameter values). In this case, in the embodiment of the present application, the transmission imaging parameter configuration set used by the first transmission imaging component 121 can be referred to as the default transmission imaging parameter configuration set Conf_dft. That is, the first transmission imaging component 121 can use the default transmission imaging parameter configuration set Conf_dft to perform transmission imaging of the object to be inspected 100. Accordingly, to distinguish it from the default transmission imaging parameter configuration set Conf_dft, in the embodiment of the present application, the transmission imaging parameter configuration set Conf_adp used by the second transmission imaging component 122 can also be referred to as an adaptive transmission imaging parameter configuration set.

[0072] It should be understood that in the embodiment of the present application, the transmission imaging parameter configuration set is used to refer to the device parameters used by the transmission imaging component in the transmission imaging process of the object to be inspected 100. The first transmission imaging component 121 refers to the transmission component used for transmission imaging of the target part of the object to be inspected 100 when the object to be inspected 100 moves to the first detection position, and the second transmission imaging component 121 refers to the transmission component used for transmission imaging of the target part of the object to be inspected 100 when the object to be inspected 100 moves to the second detection position. The first detection position refers to the pre-detection position before the target part of the object to be inspected 100 reaches the second detection position, that is, the first and second in the embodiment of the present application do not have any sequential restrictions, and are only used to distinguish different transmission imaging components and different detection positions. In addition, the number corresponding to the first transmission imaging component 121 and the second transmission imaging component 122 respectively may not be limited to one. In one embodiment, the first detection position and the second detection position can be used to refer to the two detection positions that are closest to each other among multiple detection positions, and can also be used to refer to the two detection positions that are not closest neighbors among multiple detection positions. Preferably, the first detection position and the second detection position may be two nearest neighboring detection positions, thereby ensuring real-time and accuracy in adjusting the transmission imaging parameter configuration set of the second transmission imaging component 121 during the movement detection process of the object 100 to be detected.

[0073] Specifically, the processing component 130 may be configured to:

[0074] Acquire first transmission imaging data Da from the first transmission imaging component 121, obtained by the first transmission imaging component 121 transmitting the target portion R_Obj of the object 100 at the first detection position Pa, wherein the first detection position Pa is a pre-detection position of the target portion R_Obj before it reaches the second detection position Pb;

[0075] Based on the acquired first transmission imaging data Da, determining a transmission imaging parameter configuration set Conf_adp adapted to the target region R_Obj for the second transmission imaging component 122 at the second detection position Pb;

[0076] The transmission imaging parameter configuration set Conf_adp adapted for the target region R_Obj is controlled to take effect in the configuration of the second transmission imaging component 122, so that the second transmission imaging component 122 can, in response to the target region R_Obj arriving at the second detection position Pb from the first detection position Pa, perform transmission imaging of the target region R_Obj based on the transmission imaging parameter configuration set Conf_adp adapted for the target region R_Obj, and obtain second transmission imaging data Db for generating the detection image Img_det of the object to be inspected 100. That is, in this embodiment of the present application, the aforementioned configuration taking effect means that the second transmission imaging component 122 can use the transmission imaging parameter configuration set determined based on the first transmission imaging data to perform transmission imaging on the target region of the object to be inspected 100.

[0077] It is understandable that Figure 1 The use of a rectangular frame to express the object to be inspected 100 does not mean that the object to be inspected must be of a regular shape. For the detection system of this embodiment: the object to be inspected 100 can be an object with a regular shape or an irregular shape, such as a package or a portable bag, so that the detection system in this embodiment can be applied to the security inspection field and support safety inspection of objects; or, the object to be inspected 100 can also be food or industrial parts, so that the detection system in this embodiment can be applied to the industrial inspection field and support the inspection of food or industrial parts.

[0078] It can also be understood that the target part R_Obj can be any part of the object to be inspected 100, that is, any part of the object to be inspected 100 can be used as the target part and imaged by the first transmission imaging component 121 and the second transmission imaging component 122 at the first detection position Pa and the second detection position Pb respectively.

[0079] For any portion of the object 100 serving as the target portion R_Obj, when determining the adapted transmission imaging parameter configuration set Conf_adp, the target portion R_Obj has not yet reached the second detection position Pb. Therefore, the transmission imaging parameter configuration set Conf_adp adapted to the target portion R_Obj may not necessarily be immediately configured and effective in the second transmission imaging component 122, but may be configured and effective with a delay in the second transmission imaging component 122. In this case, controlling the effectiveness of the configuration of the transmission imaging parameter configuration set Conf_adp in the second transmission imaging component 122 may include determining the effective time of the configuration of the transmission imaging parameter configuration set Conf_adp in the second transmission imaging component 122, so as to ensure that the transmission imaging parameter configuration set Conf_adp adapted to the target portion R_Obj is able to take effect in the second transmission imaging component 122 when the target portion R_Obj reaches the second detection position Pb from the first detection position Pa.

[0080] in addition, Figure 1 The display assembly 140 is also shown, and the detection image Img_det generated based on the second transmission imaging data Db can be directly displayed through the display assembly 140. However, it can be understood that the display assembly 140 can be regarded as a part included in the detection system, or the display assembly 140 can also be an external part independent of the detection system.

[0081] Based on the detection system in the above embodiment, the first transmission imaging component 121 can be used to perform transmission imaging on the target part R_Obj of the object to be inspected 100 at the first detection position Pa, wherein the first transmission imaging data Da generated by the first transmission imaging component 121 can be used to adjust the transmission imaging parameter configuration set Conf_adp used by the second transmission imaging component 122, and when the target part R_Obj reaches the second detection position Pb from the first detection position Pa, the second transmission imaging component 122 can perform transmission imaging on the target part R_Obj based on the transmission imaging parameter configuration set Conf_adp adapted to the target part R_Obj, and obtain the second transmission imaging data Db used to generate the detection image Img_det of the object to be inspected 100. The first transmission imaging data Da obtained previously can be used to analyze the properties of the target portion of the object to be inspected 100. (Different properties absorb transmitted radiation differently, resulting in differences in the parameters required for the radiation source and / or sensing array in the imaging assembly.) Therefore, the transmission imaging parameters used by the second transmission imaging assembly 122 can be adjusted based on the first transmission imaging data Da, making the transmission imaging parameters more compatible with the properties of the target portion. Furthermore, because the second transmission imaging data Db is generated based on the transmission imaging parameter configuration set Conf_adp compatible with the target transmission portion R_Obj, the internal structural information of the target portion R_Obj represented by the second transmission imaging data Db is better presented in the detection image, achieving desired clarity and contrast, thereby helping to improve the imaging quality of the detection image Img_det of the object to be inspected 100.

[0082] Figure 2 For example Figure 1 Schematic diagram of an example of implementing transmission imaging parameter configuration in the detection system of the embodiment shown. Figure 2 In some exemplary instances of this embodiment, the adaptation of the transmission imaging parameter configuration set Conf_adp to the target site R_Obj may be determined based on the object site attribute Att_obj of the target site R_Obj.

[0083] The object part attribute Att_obj of the target part R_Obj can represent the transmission attribute of the transmitted ray to the target part R_Obj. Therefore, in order to facilitate the determination of the transmission imaging parameter configuration set Conf_adp adapted to the target part R_Obj, the processing component 130 can be specifically configured as follows:

[0084] Determine the object part attribute Att_obj of the object 100 at the target part R_Obj based on the first transmission imaging data Da obtained by the first transmission imaging component 121 through transmission imaging of the target part R_Obj;

[0085] Based on the object part attribute Att_obj of the target part R_Obj, a transmission imaging parameter configuration set Conf_adp adapted to the target part R_Obj is determined.

[0086] For example, in order to determine the transmission imaging parameter configuration set Conf_adp adapted to the target part R_Obj based on the object part attribute Att_obj, the processing component 130 can be implemented by looking up a table or calling an objective function. That is, the processing component 130 can be specifically configured as follows:

[0087] By querying a pre-configured parameter configuration table, the transmission imaging parameter value corresponding to the attribute feature of the object part attribute Att_obj is determined, wherein the transmission imaging parameter configuration set Conf_adp may include the transmission imaging parameter value obtained by the query; or,

[0088] By calling a pre-trained neural network model, the transmission imaging parameter value corresponding to the attribute characteristics of the object part attribute Att_obj is determined, wherein the neural network model can realize the function of the pre-set objective function, and the transmission imaging parameter configuration set Conf_adp can include the transmission imaging parameter value output by the neural network model.

[0089] exist Figure 2 In the embodiment, the first transmission imaging component 121 may include a first radiation source 121a for generating transmission radiation, and a first sensing array 121b for generating first transmission imaging data Da by sensing the transmission radiation generated by the first radiation source 121a. The second transmission imaging component 122 may include a second radiation source 122a for generating transmission radiation, and a second sensing array 122b for generating second transmission imaging data Db by sensing the transmission radiation generated by the second radiation source 122a. The first sensing array 121b and the second sensing array 122b may be components included in different detectors, or they may be integrated into the same detector.

[0090] Accordingly, the default transmission imaging parameter configuration set Conf_dft for configuring the first transmission imaging component 121 may include: a default ray characteristic parameter Conf_dft_emt for configuring the ray characteristics of the transmission rays generated by the first transmission imaging component 121 (i.e., the first ray source 121a), and / or a default imaging sensing parameter Conf_dft_sen for configuring the sensing characteristics of the transmission rays by the first transmission imaging component 121 (i.e., the first sensing array 121b). Both the default ray characteristic parameter Conf_dft_emt and the default imaging sensing parameter Conf_dft_sen may be preset values.

[0091] Similarly, if the configuration adjustment of the second transmission imaging component 122 involves the configuration adjustment of the second ray source 122a, then the transmission imaging parameter configuration set Conf_adp for configuring the second transmission imaging component 122 may include the ray characteristic parameter Conf_adp_emt for configuring the second ray source 122a, and / or, if the configuration adjustment of the second transmission imaging component 122 involves the configuration adjustment of the second sensing array 122b, then the transmission imaging parameter configuration set Conf_adp for configuring the second transmission imaging component 122 may include the imaging sensing parameter Conf_adp_sen for configuring the second ray source 122a and the second sensing array 122b.

[0092] That is, the transmission imaging parameter configuration set Conf_adp may include at least one of the radiation characteristic parameter Conf_adp_emt and the imaging sensing parameter Conf_adp_sen. Moreover, each of the radiation characteristic parameter Conf_adp_emt and the imaging sensing parameter Conf_adp_sen may be adaptively adjusted by the processing component 130 in response to the difference in the object part attribute Att_obj of the target part R_Obj.

[0093] In order to perform adaptive adjustment on the radiation characteristic parameter Conf_adp and the imaging sensing parameter Conf_adp_sen in a targeted manner, the object part attribute Att_obj of the target part R_Obj may include corresponding attribute categories, namely:

[0094] If the transmission imaging parameter configuration set Conf_adp may include a ray characteristic parameter Conf_adp_emt for configuring the ray characteristics of the transmission ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a), then the object part attribute Att_obj of the target part R_Obj may include a part attenuation attribute Att_obj_dec, wherein the part attenuation attribute Att_obj_dec is used to characterize the attenuation ability of the transmission ray at the target part R_Obj, and the adaptive adjustment of the ray characteristic parameter Conf_adp_emt may be associated with the part attenuation attribute Att_obj_dec;

[0095] If the transmission imaging parameter configuration set Conf_adp includes the imaging sensing parameter Conf_adp_sen for configuring the sensing characteristics of the second transmission imaging component 122 (i.e., the second sensing array 122b) to the transmitted rays, then the object part attribute Att_obj of the target part R_Obj may include the part structure attribute Att_obj_str, wherein the part structure attribute Att_obj_str is used to characterize the material structure of the target part R_Obj, and the material structure may include the internal material structure of the object to be inspected 100 at the target part R_Obj. If the object to be inspected 100 is food or an industrial component, the material structure may include the surface material structure of the object to be inspected 100 at the target part R_Obj, and the adaptive adjustment of the imaging sensing parameter Conf_adp_sen may be associated with the part structure attribute Att_obj_str.

[0096] That is, the object part attribute Att_obj of the target part R_Obj may include at least one of the part attenuation attribute Att_obj_dec and the imaging sensing parameter Conf_adp_sen.

[0097] In such Figure 2 In the example shown, in order to determine the object part attribute Att_obj of the object to be inspected 100 at the target part R_Obj, the processing component 130 can be specifically configured to: based on the first transmission imaging data Da obtained by the first transmission imaging component 121 for transmission imaging of the target part R_Obj, determine at least one of the site attenuation degree of the transmitted ray at the target part R_Obj, the equivalent atomic number of the target part R_Obj, and the site structural topology of the target part R_Obj.

[0098] For example, the attenuation degree of the transmitted ray at the target site R_Obj can be determined based on the ray emission energy spectrum and / or ray intensity of the transmitted ray generated by the first transmission imaging component 121 and the pixel information representing the ray induced energy spectrum in the first transmission imaging data Da.

[0099] The first transmission imaging component 121 may generate transmission rays by a first ray source 121a, and the ray emission energy spectrum and / or ray intensity generated by the first ray source 121a may be determined by a default ray characteristic parameter Conf_dft_emt in a default transmission imaging parameter configuration set Conf_dft;

[0100] Furthermore, the pixel values in the first transmission imaging data Da can be used to represent the radiation energy spectrum and / or radiation intensity of the transmitted radiation sensed by the first sensing array 122b after transmission and attenuation through the target region R_Obj. Specifically, the first transmission imaging data Da can include the pixel value output by each pixel sensor of the sensing array 122b, that is, the first transmission imaging data Da can include a pixel vector having multiple pixel values, and the radiation energy spectrum and / or radiation intensity determined based on the pixel vector can also be in the form of a vector of multiple energy values and multiple intensity values.

[0101] Therefore, by comparing the change amplitude of the ray energy spectrum and / or ray intensity during emission and after attenuation, the attenuation degree of the transmitted ray at the target part R_Obj can be determined. The attenuation degree can be a quantitative vector value representing the attenuation level.

[0102] For another example, the equivalent atomic number of the target site R_Obj can be determined by processing the first transmission imaging data Da using a dual-energy imaging algorithm or a multi-energy imaging algorithm. Similar to the radiation energy spectrum and radiation intensity, the equivalent atomic number can also be in a vector form corresponding to the number of multi-pixel values.

[0103] For another example, the topology of the target part R_Obj may be determined based on pixel information representing topological information such as image gradient in the first transmission imaging data Da.

[0104] The pixel values in the first transmission imaging data Da may not be completely the same. By differentiating the pixel values, topological information such as image gradient can be determined, and thus the topology of the target part R_Obj can be determined.

[0105] Moreover, in Figure 2 In the example shown, in order to determine the object part attribute Att_obj of the object to be inspected 100 at the target part R_Obj, the processing component 130 can also be specifically configured to: determine at least one of the part attenuation attribute Att_obj_dec and the part structure attribute Att_obj_str of the target part R_Obj based on the part attenuation degree of the transmitted rays at the target part R_Obj, the equivalent atomic number of the target part R_Obj, and the part structure topology of the target part R_Obj.

[0106] For example, the site attenuation attribute Att_obj_dec of the target site R_Obj may include at least one of the site equivalent penetration thickness of the target site R_Obj and the atomic number value of the equivalent atomic number of the target site R_Obj; the site structural attribute Att_obj_str of the target site R_Obj may include at least one of the site structural complexity of the target site R_Obj and the number of site material types of the target site R_Obj. Among them, the "equivalent" in the site equivalent penetration thickness mentioned here can mean that the site equivalent penetration thickness is: the line integral of the linear attenuation coefficient of all materials including the target site R_Obj that the transmitted ray penetrates in its complete ray path. Although the actual physical thickness of the target site cannot be accurately determined, the equivalent penetration thickness can be used to equivalently characterize the thickness of the target site.

[0107] In this case, the processing component 130 may be specifically configured to:

[0108] Determine the equivalent penetration thickness of the target part R_Obj corresponding to the attenuation degree of the transmitted ray, and / or

[0109] Determine the atomic number value of the equivalent atomic number of the target part R_Obj, for example, the ordinal values of the equivalent atomic number vector corresponding to the multi-pixel value, and / or,

[0110] Determine the part structure complexity corresponding to the part structure topology of the target part R_Obj, where the part structure complexity may be a quantitative value representing the complexity level, and / or,

[0111] Determine the number of material types corresponding to the equivalent atomic number of the target part R_Obj, for example, the distribution interval corresponding to each ordinal value of the equivalent atomic number vector corresponding to the multi-pixel value.

[0112] Accordingly, the part attenuation attribute Att_obj_dec may include at least one of the part equivalent penetration thickness and the atomic number value, and the part structure attribute Att_obj_str may include at least one of the part structure complexity and the number of part material types.

[0113] Thus, in Figure 2 In the example shown, in order to determine the transmission imaging parameter configuration set Conf_adp adapted to the target region R_Obj, the processing component 130 may be specifically configured as follows:

[0114] If the object part attribute Att_obj of the target part R_Obj includes the part attenuation attribute Att_obj_dec, then determine the ray characteristic parameter Conf_adp_emt adapted to the part attenuation attribute Att_obj_dec;

[0115] If the object part attributes Att_obj of the target part R_Obj include the imaging sensing parameters Conf_adp_sen, then the imaging sensing parameters Conf_adp_sen adapted to the part structure attributes Att_obj_str are determined.

[0116] Among them, the ray characteristic parameter Conf_adp_emt included in the transmission imaging parameter configuration set Conf_adp can be used to configure the ray characteristics of the transmission ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a), and the imaging sensing parameter Conf_adp_sen included in the transmission imaging parameter configuration set Conf_adp can be used to configure the sensing characteristics of the second transmission imaging component 122 (i.e., the second sensing array 122b) to the transmission ray.

[0117] For example, the processing component 130 can be specifically configured to: determine at least one of the ray energy spectrum and ray intensity included in the ray characteristic parameter Conf_adp_emt based on at least one of the equivalent penetration thickness and atomic number value of the target part R_Obj, the ray energy spectrum represents the ray energy spectrum of the transmitted ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a), and the ray intensity represents the ray intensity of the transmitted ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a).

[0118] Preferably, the larger the site equivalent penetration thickness and the site equivalent atomic number of the target site R_Obj, the higher the proportion of the first energy segment component (i.e., the high-energy component) in the ray energy spectrum of the transmission ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a). At this time, the transmission ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a) can be called hard transmission ray (e.g., hard X-ray); and, the larger the site equivalent penetration thickness and the site equivalent atomic number of the target site R_Obj, the higher the ray intensity of the transmission ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a).

[0119] On the contrary, the smaller the site equivalent penetration thickness and the site equivalent atomic number, the higher the proportion of the second energy segment component (i.e., low-energy component) with an energy level lower than the first energy segment component in the ray energy spectrum of the transmission ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a). At this time, the transmission ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a) can be called soft transmission ray (e.g., soft X-ray); and, the larger the site equivalent penetration thickness and the site equivalent atomic number of the target site R_Obj, the lower the ray intensity of the transmission ray generated by the second transmission imaging component 122 (i.e., the second ray source 122a).

[0120] For another example, the processing component 130 may be specifically configured to determine an imaging sensing parameter Conf_adp_sen based on the structural complexity and the number of material types in the target site R_Obj. The imaging sensing parameter Conf_adp_sen may include at least one of the following parameters: an integration time of the second transmission imaging component 122 (i.e., the second sensing array 122b) for sensing imaging of transmitted rays, an imaging resolution of the second transmission imaging component 122 (i.e., the second sensing array 122b) for sensing imaging of transmitted rays, and a sensing sensitivity of the second transmission imaging component 122 (i.e., the second sensing array 122b) to transmitted rays. The imaging resolution may be associated with a unit pixel size configured for a single pixel sensor of the second sensing array 122b, and the sensing sensitivity may be associated with a signal gain of the second sensing array 122b.

[0121] Preferably, the higher the structural complexity and the number of material types of the target site R_Obj, the shorter the integration time of the second transmission imaging component 122 (i.e., the second sensing array 122b) for sensing imaging of transmitted rays, the higher the imaging resolution of the second transmission imaging component 122 (i.e., the second sensing array 122b) for sensing imaging of transmitted rays, and the higher the sensing sensitivity of the second transmission imaging component 122 (i.e., the second sensing array 122b) to transmitted rays.

[0122] On the contrary, the lower the structural complexity and the number of material types of the target part R_Obj, the longer the integration time of the second transmission imaging component 122 (i.e., the second sensing array 122b) for sensing the transmitted radiation, the lower the imaging resolution of the second transmission imaging component 122 (i.e., the second sensing array 122b) for sensing the transmitted radiation, and the lower the sensing sensitivity of the second transmission imaging component 122 (i.e., the second sensing array 122b) to the transmitted radiation.

[0123] Similarly, the default imaging sensing parameter Conf_dft_sen in the default transmission imaging parameter configuration set Conf_dft may include at least one of the following constant parameters: the integration time of the first transmission imaging component 121 (i.e., the first sensing array 121b) for sensing imaging of transmitted rays, the imaging resolution of the first transmission imaging component 121 (i.e., the first sensing array 121b) for sensing imaging of transmitted rays, and the sensing sensitivity of the first transmission imaging component 121 (i.e., the first sensing array 121b) to transmitted rays.

[0124] In addition, in the case where the object to be inspected 100 has multiple parts that serve as target parts R_Obj in sequence, the process of multiple parts passing through the first detection position Pa and the second detection position Pb in sequence and being imaged in sequence can be regarded as a detection process of implementing a scanning mode on the object to be inspected 100.

[0125] Figure 3 For example Figure 1 The detection system in the embodiment shown is a schematic diagram of an example of using a scanning mode to perform detection. Figure 3 , multiple adjacent parts R_Obj_1~R_Obj_k of the object to be inspected 100 can be used as target parts R_Obj in turn, causing the first transmission imaging data Da_i corresponding to each part R_Obj_i in the multiple parts to be first generated by the first transmission imaging component 121, the transmission imaging parameter configuration set Conf_adp_i corresponding to each part R_Obj_i to be determined, the configuration of the transmission imaging parameter configuration set Conf_adp_i corresponding to each part R_Obj_i in the second transmission imaging component 122 to take effect, and the second transmission imaging data Db_i corresponding to each part R_Obj_i to be generated by the second transmission imaging component 122.

[0126] That is, each part R_Obj_1~R_Obj_k of the object 100 is sequentially imaged by the first transmission imaging component 121 and the second transmission imaging component 122 at the first detection position Pa and the second detection position Pb respectively, so as to realize transmission imaging-based detection of the object 100 in a scanning mode.

[0127] Wherein, k is a positive integer representing the total number of parts of the object to be inspected 100 that serve as target parts R_Obj in sequence, i is a positive integer greater than or equal to 1 and less than or equal to k, and the value of k is determined by the object size L_Obj of the object to be inspected 100 in the relative movement direction (i.e., the first direction) between the object to be inspected 100 and the transmission imaging mechanism 120, and the ray coverage size ΔL of the first transmission imaging component 121 and the second transmission imaging component 122 in the first direction.

[0128] Therefore, the transmission rays generated by the first transmission imaging component 121 and the second transmission imaging component 122 have a coverage size ΔL in the first direction that covers an area of a certain thickness of the object to be inspected 100. Therefore, the object to be inspected 100 can be considered to be divided into multiple parts R_Obj_1~R_Obj_k with the coverage size ΔL as the granularity in the first direction, that is, L_Obj=k×ΔL.

[0129] For each part R_Obj_i that serves as the target part R_Obj in turn, when the part R_Obj_i is at the first detection position Pa:

[0130] The processing component 130 can obtain the first transmission imaging data Da_i obtained by transmission imaging of the part R_Obj_i from the first transmission imaging component 121, and the processing component 130 can also determine the transmission imaging parameter configuration set Conf_adp_i adapted to the part R_Obj_i for the second transmission imaging component 122 at the second detection position Pb based on the obtained first transmission imaging data Da_i.

[0131] For example, the processing component 130 can determine the object part attribute Att_obj_i of the object 100 at the part R_Obj_i based on the first transmission imaging data Da_i corresponding to each part R_Obj_i. Furthermore, the processing component 130 can also determine the transmission imaging parameter configuration set Conf_adp_i adapted to the part R_Obj_i based on the object part attribute Att_obj_i of each part R_Obj_i. The object part attribute Att_obj_i of each part R_Obj_i can include a part attenuation attribute Att_obj_dec_i and a part structure attribute Att_obj_str_i. Furthermore, the transmission imaging parameter configuration set Conf_adp_i adapted to each part R_Obj_i can include a radiation characteristic parameter Conf_adp_emt_i and an imaging sensing parameter Conf_adp_sen_i.

[0132] For each part R_Obj_i that serves as the target part R_Obj in turn, the processing component 130 can configure its adapted transmission imaging parameter configuration set Conf_adp_i to take effect in a delayed manner to ensure that the part R_Obj_i can be transmission imaged by the second transmission imaging component 122 based on the adapted transmission imaging parameter configuration set Conf_adp_i when it reaches the second detection position Pb, while avoiding affecting the transmission imaging of other parts R_Obj_j at the second detection position Pb by the second transmission imaging component using the corresponding transmission imaging parameter configuration set Conf_adp_j, where j is a positive integer greater than or equal to 1, less than or equal to k, and different from i.

[0133] For example, the processing component 130 can be further used to determine the configuration effective time of the transmission imaging parameter configuration set Conf_adp_i adapted to the part R_Obj_i (i.e., the target part R_Obj) based on the predicted result of the relative position change of each part R_Obj_i (i.e., the target part R_Obj) relative to the transmission imaging mechanism 120 (i.e., the first transmission imaging component 121 and the second transmission imaging component 122).

[0134] Among them, the prediction result of the relative position change of each part R_Obj_i (i.e., the target part R_Obj) can be determined based on the arrival time of the part R_Obj_i (i.e., the target part R_Obj) at the first detection position Pa, the interval distance between the first detection position Pa and the second detection position Pb, and the relative movement speed of the part R_Obj_i (i.e., the target part R_Obj) relative to the transmission imaging mechanism 120 (i.e., the first transmission imaging component 121 and the second transmission imaging component 122).

[0135] Thus, each part R_Obj_i is imaged by the second transmission imaging component 122 at the second detection position Pb based on the adapted transmission imaging parameter configuration set Conf_adp_i, and second transmission imaging data Db_i for generating the detection image Img_det can be obtained. Moreover, the second transmission imaging data Db_i corresponding to each part R_Obj_i is obtained based on the adapted transmission imaging parameter configuration set Conf_adp_i. Therefore, the second transmission imaging data Db_i corresponding to each part R_Obj_i can achieve better imaging quality, so that the detection image Img_det can be locally optimized with multiple parts R_Obj_1 to R_Obj_k as the granularity.

[0136] In order to maximize the local optimization effect of the detection image Img_det, the number k of the multiple parts R_Obj_1~R_Obj_k formed by dividing the object 100 can be as large as possible. Accordingly, the ray coverage size ΔL of the first transmission imaging component 121 and the second transmission imaging component 122 in the first direction can be as small as possible.

[0137] For example, the transmitted rays generated by the first ray source 121a can be shaped by a first ray shaping element. The first ray shaping element may include a first substrate. The first substrate may be made of a material such as lead. The material of the first substrate may prevent the transmitted rays from penetrating by completely attenuating the transmitted rays. In addition, the first substrate may be provided with a first linear through-slot (or called a first collimating through-slot) that allows the transmitted rays to pass through. Thus, the transmitted rays generated by the first ray source 121a can be shaped by the first ray shaping element into a first planar ray beam (e.g., a ray beam distributed in a fan-shaped surface) directed toward the first sensing array 121b.

[0138] Similarly, the transmitted rays generated by the second ray source 122a can be shaped by a second ray shaping element. The second ray shaping element may include a second substrate. The second substrate may be made of the same or substantially the same material as the first substrate, such as lead, and the second substrate may be provided with a second linear through-slot (or called a first collimating through-slot) that allows the transmitted rays to pass through. Thus, the transmitted rays generated by the second ray source 122a can be shaped into a second planar ray beam (e.g., a ray beam with a fan-shaped surface distribution) directed toward the second sensing array 122b.

[0139] In which, the first planar ray beam and the second planar ray beam can be expanded in a second direction perpendicular to the first direction, and the first sensing array 121b and the second sensing array 122b can be configured as linear array sensing arrays extending along the second direction. Therefore, the ray coverage size ΔL of the first transmission imaging component 121 and the second transmission imaging component 122 in the first direction can be minimized to the line width size of the linear array sensing array, so that the local optimization effect of the detection image Img_det can be maximized.

[0140] If the first sensing array 121b and the second sensing array 122b are configured as linear sensing arrays extending along the second direction, the first transmission imaging data Da_i generated by the first sensing array 121b and the second transmission imaging data Db_i generated by the second sensing array 122b can both be referred to as strip data.

[0141] For the detection image Img_det with a local optimization effect, the pixel information contained in the image area of each part R_Obj_i (i.e., the target part R_Obj) of the object to be inspected 100 presented therein is derived from the second transmission imaging data Db_i obtained by transmission imaging based on different transmission imaging parameter configuration sets Conf_adp_i. Therefore, if the second transmission imaging data Db_1 to Db_k corresponding to multiple parts R_Obj_1 to R_Obj_k are directly used to splice and form a detection image, it may cause jump differences in pixel values between the various image areas of the detection image Img_det. This jump difference may appear as a seam between the individual image areas.

[0142] In order to weaken or eliminate pixel value jump differences that may exist between various image regions of the detection image Img_det, in this embodiment, the processing component 130 can be configured to: perform grayscale correction processing on the second transmission imaging data Db_1~Db_k corresponding to the multiple parts R_Obj_1~R_Obj_k of the object to be inspected 100, respectively, to obtain transmission imaging correction data Dc_1~Dc_k corresponding to the multiple parts R_Obj_1~R_Obj_k, respectively. The grayscale correction processing can be used to compensate for the imaging grayscale difference between the multiple parts R_Obj_1~R_Obj_k. The imaging grayscale difference is associated with the parameter difference between the transmission imaging parameter configuration sets Conf_adp_1~Conf_adp_k corresponding to the multiple parts R_Obj_1~R_Obj_k, respectively. That is, the parameter difference may cause grayscale difference between the various image regions of the detection image Img_det, which is manifested as a jump difference in pixel value.

[0143] For example, since the first transmission imaging data Da_1 to Da_k corresponding to multiple parts R_Obj_1 to R_Obj_k are all obtained based on the same default transmission imaging parameter configuration set Conf_dft, the first transmission imaging data Da_1 to Da_k can be used as correction reference data for grayscale correction processing, that is, the processing component 130 can be configured to: use the first transmission imaging data Da_i corresponding to each part R_Obj_i as the correction reference data, and perform grayscale correction processing on the second transmission imaging data Db_i corresponding to the part R_Obj_i to obtain the transmission imaging correction data Dc_1 to Dc_k corresponding to the multiple parts R_Obj_1 to R_Obj_k.

[0144] Correspondingly, the processing component 130 can also be configured to: use the transmission imaging correction data Dc_1~Dc_k corresponding to the multiple parts R_Obj_1~R_Obj_k respectively to obtain the detection image Img_det of the object to be inspected 100. For example, the processing component 130 can splice the transmission imaging correction data Dc_1~Dc_k corresponding to the multiple parts R_Obj_1~R_Obj_k respectively to form the detection image Img_det of the object to be inspected 100.

[0145] In addition, during the process of generating the detection image Img_det, the processing component 130 may further perform full-load background correction on the second transmission imaging data Db_1 to Db_k. That is, the processing component 130 may further perform full-load background correction on the second transmission imaging data Db_1 to Db_k corresponding to the multiple parts R_Obj_1 to R_Obj_k after, before, or simultaneously with the grayscale correction process, so as to optimize the transmission imaging correction data Dc_1 to Dc_k corresponding to the multiple parts R_Obj_1 to R_Obj_k.

[0146] The full-load background correction may use the full-load data and background data collected in advance at the second detection position Pb by the second transmission imaging component 122:

[0147] The full-load data may be collected when transmitted rays are generated at the second detection position Pb. The full-load data is used to represent the imaging background information when the transmitted rays are generated, for example, the imaging background information formed by the area where the object carrying mechanism 110 carries each part R_Obj_i when the transmitted rays are generated.

[0148] The background data can be collected when no transmitted rays are generated at the second detection position Pb. The background data can represent the imaging background information when no transmitted rays are generated, for example, the imaging background information formed when no transmitted rays are generated in the area where the object carrying mechanism 110 carries each part R_Obj_i.

[0149] As mentioned above, the functions that the processing component 130 needs to undertake include:

[0150] Implementing parameter configuration for the first transmission imaging assembly 121 and the second transmission imaging assembly 122 , and hardware control functions for controlling the relative movement between the object carrying mechanism 110 and the transmission imaging mechanism 120 ;

[0151] A data acquisition function for acquiring first transmission imaging data Da and second transmission imaging data Db;

[0152] Determine the transmission imaging parameter configuration set Conf_adp, grayscale correction processing, and data processing functions for generating the detection image Img_det.

[0153] In order to ensure that the processing capability of the processing component 130 is sufficient to bear the above functions, in this embodiment, the processing component 130 may adopt a multi-processor hardware configuration.

[0154] Figure 4 For example Figure 1 Schematic diagram of an example structure of the processing components of the detection system in the embodiment shown. Figure 4The processing component 130 may include a first processor 131 , a second processor 132 , and a third processor 133 .

[0155] The first processor 131 can be regarded as a control unit of the processing component 130, and the first processor 131 can be used to control the relative movement between the object supporting mechanism 110 and the transmission imaging mechanism 120, the configuration of the default transmission imaging parameter configuration set Conf_dft in the first transmission imaging component 121, and the configuration of the transmission imaging parameter configuration set Conf_adp in the second transmission imaging component 122.

[0156] The second processor 132 can be regarded as an acquisition unit of the processing component 130 , and the second processor 132 can be used to obtain the first transmission imaging data Da generated by the first transmission imaging component 121 and the second transmission imaging data Db generated by the second transmission imaging component 122 .

[0157] For example, the first processor 131 and the second processor 132 may be a CPU (central processing unit) or a logic device such as an FPGA (Field-Programmable Gate Array).

[0158] The third processor 133 can be regarded as a processing unit of the processing component 130, and the third processor 133 can be used to determine the transmission imaging parameter configuration set Conf_adp based on the first transmission imaging data Da, and to generate a detection image Img_det of the object to be inspected 100 based on the second transmission imaging data Db. If the scanning mode is adopted to detect the object to be inspected 100, then, in the process of generating the detection image Img_det of the object to be inspected 100 based on the second transmission imaging data Db, the third processor 133 can also be further used to obtain transmission imaging correction data Dc through grayscale correction processing.

[0159] For example, the third processor 133 may be a CPU, a logic device, or a GPU (Graphics Processing Unit) having higher computing and processing capabilities than a CPU and a logic device.

[0160] in addition, Figure 4 FIG. 2 shows two parallel optional methods of the third processor 133 generating the detection image Img_det directly based on the second transmission imaging data Db and generating the detection image Img_det based on the transmission imaging correction data Dc obtained by grayscale correction processing, which is intended to express that grayscale correction processing is not a necessary processing process.

[0161] It is understandable that although this embodiment provides a multi-processor hardware configuration for the processing component 130 , this does not mean that this embodiment excludes the processing component 130 from adopting a single-processor hardware configuration.

[0162] In order to intuitively understand the detection system in this embodiment, the following description will be given by taking the application of the detection system in the field of security inspection as an example, that is, the detection system can be configured as a security inspection system.

[0163] Figure 5 For example Figure 1 A schematic diagram of a first deployment example of the detection system is shown. Figure 6 For example Figure 1 A schematic diagram of a second deployment example of the detection system is shown. Figure 7 For example Figure 1 The third deployment example diagram of the detection system is shown. Figure 8 For example Figure 1 A schematic diagram of a fourth deployment example of the detection system is shown. Figure 9 For example Figure 1 A schematic diagram of a fifth deployment example of the detection system is shown. Figure 10 For example Figure 1 A schematic diagram of a sixth deployment example of the detection system is shown. Figure 11 For example Figure 1 Schematic diagram of the seventh deployment example of the detection system shown. Figure 12 For example Figure 1 The eighth deployment example schematic diagram of the detection system is shown.

[0164] exist Figures 5 to 12 In each deployment example shown, Figure 1 The object to be inspected 100 shown in the figure can be a portable bag 200 as an example. It can be understood that Figures 5 to 12 The deployment manner of the first transmission imaging component 121 and the second transmission imaging component 122 in each deployment example shown is also applicable to other application scenarios where the object to be inspected 100 is other objects.

[0165] exist Figures 5 to 12 In each of the deployment examples shown, the object carrying mechanism 110 can be configured to transport the portable bag 200 (i.e., the object to be inspected 100) relative to the transmission imaging mechanism 120. For example, the object carrying mechanism 110 can include components such as rollers, conveyor belts, etc. that can be used to implement the transport; and the portable bag 200 (i.e., the object to be inspected 100) can be inspected based on the scanning mode.

[0166] See Figure 5In the first deployment example, the first transmission imaging component 121 is located upstream of the second transmission imaging component 122 in the conveying direction of the portable bag 200 (i.e., the object to be inspected 100) by the object carrying mechanism 110; the first transmission imaging component 121 and the second transmission imaging component 122 respectively include a first ray source 121a and a second ray source 122a that are independent of each other, and the first transmission imaging component 121 and the second transmission imaging component 122 respectively include two independent linear array detectors that serve as a first sensing array 121b and a second sensing array 122b, respectively. In addition, the first transmission imaging component 121 and the second transmission imaging component 122 perform transmission imaging of the portable bag 200 along the vertical direction (i.e., the height direction of the portable bag 200).

[0167] See Figure 6 In the second deployment example, unlike the first deployment example, the first transmission imaging assembly 121 and the second transmission imaging assembly 122 can share a radiation source 123. Specifically, the radiation source 123 can be switched between a first detection position Pa and a second detection position Pb. In this case, the distance between the first transmission imaging assembly 121 and the second transmission imaging assembly 122 needs to be sufficiently large to ensure that all target regions R_Obj of the object 100 undergo an undetected idle period between the first detection position Pa and the second detection position Pb. This provides sufficient time for the shared radiation source 123 to switch positions after all target regions R_Obj of the object 100 undergo transmission imaging at the first detection position Pa. This switching of the shared radiation source 123 involves deflection or translation of the radiation source, thereby enabling the shared radiation source 123 to generate transmission radiation toward the second sensing array.

[0168] Moreover, in the second deployment instance, the first transmission imaging component 121 and the second transmission component 122 can also share a multi-row linear array detector 124, that is, the multi-row linear array detector 124 includes two linear arrays that can be independently controlled, that is, a first sensing array 121b corresponding to the first detection position Pa, and a second sensing array 122b corresponding to the second detection position Pb.

[0169] See Figure 7In the third deployment example, similar to the second deployment example, the first transmission imaging component 121 and the second transmission imaging component 122 can share a radiation source 125. However, unlike the second deployment example, the transmission radiation generated by the shared radiation source 125 is shaped by the first linear slot (or first collimating slot) and the second linear slot (or second collimating slot) provided by the integrated radiation shaping device into two transmission radiation paths directed toward the first sensing array 121b and the second sensing array 122b, respectively. Furthermore, the shared radiation source 125 is initially configured with the default radiation characteristic parameter Conf_dft_emt. The transmission imaging parameter configuration set Conf_adp may or may not include the radiation characteristic parameter Conf_adp_emt. Correspondingly, the object part attribute Att_obj of the target part R_Obj may or may not include the part attenuation attribute Att_obj_dec, depending on specific detection requirements. Preferably, the transmission imaging parameter configuration set Conf_adp does not include the ray characteristic parameter Conf_adp_emt. If so, the first transmission imaging data Da_1 to Da_k (these data correspond to the same transmission imaging parameters) can be used as correction reference data for grayscale correction processing.

[0170] In addition, in the third deployment example, the first transmission imaging component 121 and the second transmission component 122 may share a multi-row linear array detector 124 as in the second deployment example, or may use independent linear array detectors as in the first deployment example.

[0171] It can be seen from the differences between the second deployment instance or the third deployment instance and the first deployment instance that in the embodiments of the present application, the "first" and "second" used to define the first transmission imaging component 121 and the second transmission imaging component 122 are mainly used to define the relative positional relationship of front and rear between the transmission imaging components, and are not intended to make unnecessary limitations on the hardware configuration of the transmission imaging components.

[0172] That is, in the embodiment of the present application, the first sensing array 121b included in the first transmission imaging component 121 and the second sensing array 122b included in the second transmission imaging component 122 may be independent of each other or may be integrated into one body. At the same time:

[0173] The first transmission imaging component 121 may further include a first ray source 121a for generating transmission rays toward the first sensing array 121b, and the second transmission imaging component 122 may further include a second ray source 122a for generating transmission rays toward the second sensing array 122b. The first ray source 121a and the second ray source 122a may be independent of each other.

[0174] Alternatively, the first transmission imaging component 121 and the second transmission imaging component 122 can reuse the shared ray source 123 or 125, wherein the shared ray source 123 can be time-sharedly multiplexed by the first transmission imaging component 121 and the second transmission imaging component 122 by switching the position between the first detection position Pa and the second detection position Pb, or the shared ray source 125 can also simultaneously generate transmission rays that are respectively directed to the first sensing array 121b and the second sensing array 122b.

[0175] In embodiments of the present application, the transmission imaging parameter configuration set of the second transmission imaging assembly may include radiation characteristic parameters and / or imaging sensing parameters. The parameters that need to be adjusted during the movement of the object to be inspected can be determined based on the specific deployment method of the transmission imaging assembly. For example, in the case of a shared radiation source, the same radiation source can be adjusted multiple times as the object to be inspected moves until the object is fully inspected.

[0176] See Figure 8 In the fourth deployment example, unlike the first deployment example, the first transmission imaging assembly 121 and the second transmission imaging assembly 122 can perform transmission imaging of the portable bag 200 in the horizontal direction (i.e., the width direction of the portable bag 200). Furthermore, the hardware sharing implementation in the fourth deployment example can also be applied to the implementations in the second or third deployment examples.

[0177] See Figure 9 In the fifth deployment example, the first transmission imaging component 121 can be as follows Figure 5 As shown in the first deployment example, a pair of transmission imaging components 122 are deployed along the vertical direction (ie, the height direction of the portable bag 200) to transmit the portable bag 200, and the second transmission imaging component 122 can be as shown. Figure 8 As shown in the fourth deployment example, a pair of transmission imaging components 121 and 122 are deployed horizontally (i.e., along the width of the carrying case 200) to perform transmission imaging of the carrying case 200. That is, the transmission imaging directions of the first transmission imaging component 121 and the second transmission imaging component 122 on the carrying case 200 can intersect. In other words, the primary purpose of the first transmission imaging component 121 is to find a suitable transmission imaging parameter configuration set Conf_adp for the second transmission imaging component 122. Therefore, the first transmission imaging component 121 and the second transmission imaging component 122 do not necessarily need to be deployed spatially aligned.

[0178] In addition, for Figure 9For the fifth deployment example shown, the first transmission imaging data Da generated by the first transmission imaging component 121 can also be used to generate another additional detection image Img_det', which can present structural information different from the imaging orientation of the detection image Img_det'. Although the imaging quality of the additional detection image Img_det' may be lower than the imaging quality of the detection image Img_det', it can still serve as an information supplement to the detection image Img_det'.

[0179] It can be seen from the differences between the fourth and fifth deployment examples and the first deployment example that, in the embodiments of the present application, the "first" and "second" used to define the first transmission imaging component 121 and the second transmission imaging component 122 are mainly used to define the relative positional relationship of front and rear between the transmission imaging components, and are not intended to make unnecessary limitations on the spatial deployment orientation of the transmission imaging components.

[0180] That is, in an embodiment of the present application, the first transmission imaging component 121 and the second transmission imaging component 122 can both be arranged to form transmission imaging of the object to be inspected in any same direction along the vertical direction or the horizontal direction; or, one of the first transmission imaging component 121 and the second transmission imaging component 122 can be arranged to form transmission imaging of the object to be inspected in the vertical direction, and the other can be arranged to form transmission imaging of the object to be inspected in the horizontal direction, that is, the first transmission imaging component 121 and the second transmission imaging component 122 can be arranged to form transmission imaging of the object to be inspected in different directions. In this case, the processing component 130 can further generate an additional detection image Img_det' having a different imaging angle from the detection image Img_det based on the first transmission imaging data Da generated by the first transmission imaging component 121 having a different transmission imaging direction from the second transmission imaging component 122.

[0181] See Figure 10 In the sixth deployment example, you can Figure 5 As shown in the first deployment example, a pair of first transmission imaging components 121 and second transmission imaging components 122 are deployed in the vertical direction (ie, the height direction of the portable bag 200) to transmit imaging of the portable bag 200. At the same time, Figure 8 As shown in the fourth deployment example, a pair of first transmission imaging components 121' and second transmission imaging components 122' are deployed to transmit images of the portable bag 200 in the horizontal direction (i.e., the width direction of the portable bag 200), thereby obtaining two locally optimized detection images Img_det and Img_det' obtained by transmitting images of the portable bag 200 in different directions. Figure 9 The fifth deployment example shown is Figure 13The sixth deployment example shown in the figure can be exchanged for two locally optimized detection images Img_det and Img_det' with different imaging directions at the expense of higher hardware costs. In application scenarios with multi-directional imaging, one can choose one of the following according to the requirements for imaging quality and cost: Figure 9 The fifth deployment example shown or Figure 13 The sixth deployment instance is shown.

[0182] See Figure 11 In the seventh deployment example, you can Figure 5 As shown in the first deployment example, two pairs of transmission imaging assemblies are deployed vertically (i.e., along the height of the portable case 200) to perform transmission imaging of the portable case 200. These pairs include a first transmission imaging assembly 121 and a second transmission imaging assembly 122, and another pair of a first transmission imaging assembly 121' and a second transmission imaging assembly 122'. The two first transmission imaging assemblies 121 and 121' use different default transmission imaging parameter configuration sets Conf_dft and Conf_dft', respectively. Consequently, different first transmission imaging data Da_i and Da_i' are obtained for each portion of the portable case 200. Consequently, each portion corresponds to two different transmission imaging parameter configuration sets Conf_adp_i and Conf_adp_i', enabling the two second transmission imaging assemblies 121 and 122', based on the transmission imaging parameter configuration sets Conf_adp_i and Conf_adp_i', to perform transmission imaging of each portion and obtain different second transmission imaging data Db_i and Db_i'. Furthermore, based on the different second transmission imaging data Db_i and Db_i', two different detection images Img_det and Img_det' can be obtained respectively. By fusing the two detection images Img_det and Img_det' for the purpose of weakening quality defects, a fused detection image Img_fus with higher imaging quality can be obtained. As an alternative, Figure 9 The fifth deployment example shown can also be like Figure 7 As shown in the third deployment example, the two pairs of transmission imaging assemblies are arranged to perform transmission imaging of the carrying case 200 along the horizontal direction (ie, the width direction of the carrying case 200).

[0183] Through Figure 10 The sixth deployment example shown and Figure 11It can be seen from the seventh deployment example shown that in the embodiments of the present application, the "first" and "second" used to define the first transmission imaging component 121 and the second transmission imaging component 122 are mainly used to define the relative positional relationship of front and rear between the transmission imaging components, and are not intended to make unnecessary associated limitations on the number of associated sets of associated transmission imaging components that have a front-to-back deployment relationship.

[0184] That is, in an embodiment of the present application, the first transmission imaging component 121 and the second transmission imaging component 122 can be arranged in pairs into at least two pairs. In this case, the processing component 130 can be configured to generate at least two detection images Img_det and Img_det' based on the second transmission imaging data Db provided by the second transmission imaging component 122 in each pair, respectively, and fuse the at least two detection images Img_det and Img_det' into a fused image Img_fus.

[0185] See Figure 12 In the eighth deployment example, the first transmission imaging component 121 can be associated with at least two second transmission imaging components 122 that are deployed at intervals, that is, the transmission imaging parameter configuration set Conf_adp determined based on the first transmission imaging data Da generated by the first transmission imaging component 121 can be configured to take effect in at least two second transmission imaging components 122 arranged at intervals to generate an image sequence {Img_det} containing at least two detection images for the object to be inspected. The at least two detection images in the image sequence {Img_det} can be used to be fused into a fused image Img_fus based on TDI (Time Delay Integration).

[0186] Through Figure 12 As can be seen from the eighth deployment example shown, in the embodiment of the present application, the "first" and "second" used to define the first transmission imaging component 121 and the second transmission imaging component 122 are mainly used to define the relative positional relationship of front and rear between the transmission imaging components, and are not intended to make unnecessary associated limitations on the number of second transmission imaging components 122 in the associated transmission imaging components with a front-to-back deployment relationship, that is, the parameter configuration function provided by the first transmission imaging component 121 can serve more than one second transmission imaging component 122.

[0187] Based on the above deployment example, the "first" and "second" of the first transmission imaging component 121 and the second transmission imaging component 122 can be considered as a limitation on the relative roles between the transmission imaging components, and the relative roles depend on the relative positional relationship between the front and rear of the pair of transmission imaging components, and should not be understood as any other limiting role unrelated to the front and rear positional relationship.

[0188] In addition, regardless of whether the detection system of this embodiment is applied to the security inspection field or is applied to other fields such as industrial inspection, since the spatial conditions or traffic directions in the scene where the detection system is located may be uncertain, therefore, regardless of the number of transmission imaging components deployed in a set in the detection system, in the initial state of the installation and deployment of the detection system, the initial role of each transmission imaging component is vacant. During the debugging period after the detection system is installed in the scene, the role allocation of each transmission imaging component deployed in a set can be determined by the transmission direction of the object to be inspected in the scene by the detection system.

[0189] That is, the processing component 130 (e.g., the first processor 131) can be further configured to detect the direction in which the object to be inspected is conveyed by the object support mechanism, and, based on the detected direction, determine the first transmission imaging component and the second transmission imaging component in any pair of transmission imaging components. For example, the detection system can deploy a pair of sensor components along the object support mechanism, and determine the direction in which the object to be inspected is conveyed by the object support mechanism based on the order in which the pair of sensor components sense the conveyed object to be inspected.

[0190] The above is an explanation of a detection system in one embodiment of the present application. In the following other embodiments, a detection method based on transmission imaging and a detection device based on transmission imaging are respectively provided.

[0191] Figure 13 FIG. 1 is a schematic diagram of an exemplary process of a detection method based on transmission imaging in another embodiment. Figure 13 , the detection method based on transmission imaging in this embodiment may include:

[0192] S1310, obtaining first transmission imaging data obtained by a first transmission imaging assembly from transmitting imaging a target portion of the object to be inspected at a first detection position, wherein the first detection position is a preceding detection position of the target portion before the target portion reaches a second detection position;

[0193] S1330, based on the acquired first transmission imaging data, determining a transmission imaging parameter configuration set adapted to the target part for a second transmission imaging component corresponding to the second detection position;

[0194] S1350, controlling the determined transmission imaging parameter configuration set to take effect in the configuration of the second transmission imaging component, so that the second transmission imaging component performs transmission imaging of the target portion based on the determined transmission imaging parameter configuration set in response to the target portion arriving at the second detection position from the first detection position, and obtains second transmission imaging data for generating a detection image of the object to be inspected.

[0195] Based on the above-described detection method, a first transmission imaging component can be used to perform transmission imaging of a target portion of an object to be inspected at a first detection position, wherein first transmission imaging data generated by the first transmission imaging component can be used to adjust a transmission imaging parameter configuration set used by a second transmission imaging component. Furthermore, when the target portion moves from the first detection position to the second detection position, the second transmission imaging component can perform transmission imaging of the target portion based on the transmission imaging parameter configuration set, thereby obtaining second transmission imaging data used to generate a detection image of the object to be inspected. Because the second transmission imaging data is generated based on a transmission imaging parameter configuration set that is compatible with the target transmission portion, it facilitates the presentation of internal structural information of the target portion represented by the second transmission imaging data in the detection image, achieving desired clarity, contrast, and other indicators, thereby helping to improve the imaging quality of the detection image of the object to be inspected.

[0196] Figure 14 For example Figure 13 The detection method shown in FIG. 1 is a schematic diagram of the optimization process of transmission imaging parameter configuration. Figure 14 In the optimization process shown, the adaptation of the transmission imaging parameter configuration set to the target part can be determined based on the object part attributes of the target part. Specifically, the optimization process may include:

[0197] S1410 , obtaining first transmission imaging data obtained by a first transmission imaging component performing transmission imaging on a target portion of an object to be inspected at a first detection position, wherein the first detection position is a pre-detection position before the target portion reaches a second detection position.

[0198] S1431 : Determine an object part attribute of the object to be inspected at a target part based on the acquired first transmission imaging data.

[0199] The object part attributes of the target part determined in S1431 may include part attenuation attributes and part structural attributes. The part attenuation attributes are used to characterize the attenuation ability of the transmitted rays in the target part, and the part structural attributes can be used to characterize the material structure of the target part.

[0200] In this case, S1431 may specifically include:

[0201] Based on the acquired first transmission imaging data, at least one of a site attenuation degree of the transmitted radiation at the target site, an equivalent atomic number of the target site, and a site structural topology of the target site is determined. For example, the site attenuation degree, the equivalent atomic number, and the site structural topology can be determined using the methods previously described in the relevant description of the detection system, which will not be repeated here.

[0202] Based on the determined part attenuation degree, equivalent atomic number and at least one of the part structural topology, the object part attribute of the target part is determined, that is, at least one of the part attenuation attribute and the part structural attribute of the target part is determined. For example, the method for determining any one of the part attenuation attribute and the part structural attribute can adopt the method mentioned in the previous description of the detection system, which will not be repeated here.

[0203] S1433 , based on the object part attribute of the target part, determining a transmission imaging parameter configuration set adapted to the target part for the second transmission imaging component corresponding to the second detection position.

[0204] If the target part attributes determined in S1431 include at least one of a part attenuation attribute and a part structural attribute, S1433 may accordingly determine: radiation characteristic parameters adapted to the part attenuation attribute, and / or imaging sensing parameters adapted to the part structural attribute. That is, the transmission imaging parameter configuration set determined in S1433 may include at least one of the radiation characteristic parameters and the imaging sensing parameters. For example, the method for determining either the radiation characteristic parameters or the imaging sensing parameters may employ the method previously described in the relevant description of the detection system, and will not be further elaborated here.

[0205] Regardless of the attribute feature types included in the object part attributes and the parameter types included in the transmission imaging parameter configuration set, S1433 can determine the transmission imaging parameter configuration set by looking up a table or calling an objective function.

[0206] For example, S1433 can determine the transmission imaging parameter values corresponding to the attribute characteristics of the object part attributes by querying a pre-configured parameter configuration table, wherein the transmission imaging parameter configuration set can include the transmission imaging parameter values obtained by the query; or, S1433 can also determine the transmission imaging parameter values corresponding to the attribute characteristics of the object part attributes by calling a pre-trained neural network model, wherein the neural network model can implement the function of a pre-set objective function, and the transmission imaging parameter configuration set can include the transmission imaging parameter values output by the neural network model.

[0207] That is, if Figure 14 S1431 and S1433 in the example process shown can be regarded as Figure 13 A further refinement of S1330 in the process shown.

[0208] S1450, controlling the determined transmission imaging parameter configuration set to take effect in the configuration of the second transmission imaging component, so that the second transmission imaging component performs transmission imaging of the target portion based on the determined transmission imaging parameter configuration set in response to the target portion arriving at the second detection position from the first detection position, and obtains second transmission imaging data for generating a detection image of the object to be inspected.

[0209] In application scenarios such as security inspection, multiple parts of the object to be inspected 100 can be used as target parts in turn, first at the first detection position Pa and then at the second detection position Pb, and imaged in turn. This process can be regarded as a scanning mode detection process for the object to be inspected.

[0210] For this case, S1450's control over the effectiveness of the transmission imaging parameter configuration set in the configuration of the second transmission imaging component may include: determining the time when the configuration of the transmission imaging parameter configuration set in the second transmission imaging component takes effect (i.e., the delayed effective time) to ensure that when each part of the object to be inspected as the target part reaches the second detection position from the first detection position, the transmission imaging parameter configuration set adapted to the part as the target part can take effect in the configuration of the second transmission imaging component, and at the same time, avoid affecting other parts when they are used as target parts and are transmitted imaged by the second transmission imaging component based on the adapted transmission imaging parameter configuration set.

[0211] Regarding the determination of the configuration effective time, S1450 can determine the configuration effective time of the transmission imaging parameter configuration set adapted to each target part based on the prediction result of the relative position change of each target part relative to the second transmission imaging component.

[0212] For example, the predicted result of the relative position change of each part of the object to be inspected as the target part can be determined based on the arrival time of the part at the first detection position, the interval distance between the first detection position and the second detection position, and the relative movement speed of the part relative to the second transmission imaging component.

[0213] That is, in the case of implementing detection in a scanning mode, multiple adjacent parts of the object to be inspected can be used as target parts in turn, causing the first transmission imaging data corresponding to each part in the multiple parts to be generated from the first transmission imaging component, the corresponding transmission imaging parameter configuration set to be determined, the corresponding transmission imaging parameter configuration set to take effect in the configuration of the second transmission imaging component, and the corresponding second transmission imaging data to be generated from the second transmission imaging component.

[0214] Figure 15 For example Figure 13 The detection method shown supports an extended flow diagram of the detection in scanning mode. Figure 15, taking each part of the object to be inspected as the target part in turn, and executing the following steps multiple times: Figure 13 The exemplary process shown or Figure 14 After the optimization process shown above obtains the second transmission imaging data corresponding to each part, the detection method in this embodiment may further include:

[0215] S1510, performing grayscale correction processing on the second transmission imaging data corresponding to the multiple parts of the object to be inspected, to obtain transmission imaging correction data corresponding to the multiple parts, wherein the grayscale correction processing is used to compensate for the imaging grayscale difference between the multiple parts, and the imaging grayscale difference is associated with the parameter difference between the transmission imaging parameter configuration sets corresponding to the multiple parts.

[0216] For example, if the first transmission imaging component is configured to generate corresponding first transmission imaging data based on a default transmission imaging parameter configuration set, with each of the multiple parts of the object to be inspected as the target part, then S1510 may specifically include: using the first transmission imaging data corresponding to each of the multiple parts of the object to be inspected as correction reference data, performing grayscale correction processing on the second transmission imaging data corresponding to the part, and obtaining transmission imaging correction data corresponding to the multiple parts of the object to be inspected.

[0217] In addition, S1510 may further perform full-load background correction on the second transmission imaging data corresponding to the plurality of parts, or the transmission imaging correction data obtained by processing the second transmission imaging data.

[0218] S1530 , obtaining a detection image of the object to be inspected by using the transmission imaging correction data corresponding to the plurality of parts of the object to be inspected.

[0219] Accordingly, S1530 may stitch together the transmission imaging correction data corresponding to the multiple parts of the object to be inspected to form a detection image of the object to be inspected.

[0220] Based on the above process, a detection image with local optimization effect and no stitching seams can be obtained.

[0221] Figure 16 For example Figure 13 The detection method shown in the figure supports the example flow diagram of security inspection configuration. Figure 16 In order to support the reversing function in the security inspection configuration, the detection method in this embodiment may further include the step of determining the first transmission imaging component and the second transmission imaging component during the initialization or debugging phase. That is, an example process of the detection method in this embodiment may specifically include:

[0222] S1610, detecting the transmission direction of the object to be detected.

[0223] For example, S1610 can obtain the sensing signals of a pair of sensing components on the transmitted object to be inspected, and based on the obtained sensing signals, the sensing order of the pair of sensing components on the transmitted object to be inspected can be determined, thereby determining the transmission direction of the object to be inspected based on the sensing order.

[0224] S1630: Determine a first transmission imaging component and a second transmission imaging component in a pair of transmission imaging components according to the determined transmission direction.

[0225] For example, S1630 may further configure a default transmission imaging parameter configuration set for the determined first transmission imaging component.

[0226] S1650, taking each of the multiple parts of the object to be inspected as a target part in turn, using the first transmission imaging data generated by the first transmission imaging component for each target part to determine a transmission imaging parameter configuration set adapted to the part, and controlling the second transmission imaging component to perform transmission imaging on each part based on the adapted transmission imaging parameter configuration set to obtain corresponding second transmission imaging data.

[0227] It is understandable that S1650 may include multiple executions such as Figure 13 The exemplary process shown or Figure 14 The process of the optimization process is shown.

[0228] S1670 , obtaining a detection image of the object to be inspected based on the transmission imaging data corresponding to the plurality of parts of the object to be inspected.

[0229] As a preferred method, S1670 can execute the following Figure 15 This is achieved by the extended process shown.

[0230] Figure 17 FIG is a schematic diagram of an exemplary structure of a detection device based on transmission imaging in another embodiment. Figure 17 In this embodiment, the detection device based on transmission imaging may include:

[0231] The pre-acquisition module 1710 is configured to acquire first transmission imaging data obtained by the first transmission imaging assembly from transmitting imaging the target portion of the object to be inspected at a first detection position, wherein the first detection position is a pre-detection position before the target portion reaches a second detection position;

[0232] The parameter determination module 1730 is configured to determine a transmission imaging parameter configuration set adapted to the target site for the second transmission imaging component corresponding to the second detection position based on the first transmission imaging data acquired by the pre-acquisition module 1710;

[0233] Configuration management module 1750 is configured to control the effectiveness of the transmission imaging parameter configuration set determined by parameter determination module 1730 on the configuration of the second transmission imaging component corresponding to the second detection position, so that, in response to the target portion arriving at the second detection position from the first detection position, the second transmission imaging component performs transmission imaging of the target portion based on the transmission imaging parameter configuration set adapted for the target portion, thereby obtaining second transmission imaging data for generating a detection image of the object to be inspected. For example, to implement control over the effectiveness of the configuration of the transmission imaging parameter configuration set on the second transmission imaging component, configuration management module 1750 may be specifically configured to determine a configuration effectiveness time of the transmission imaging parameter configuration set based on a predicted result of a relative position change of the target portion relative to the second transmission imaging component. This configuration effectiveness time may allow for delayed effectiveness of the configuration of the transmission imaging parameter configuration set on the second transmission imaging component.

[0234] Based on the above-described detection device, a first transmission imaging component can be used to perform transmission imaging of a target portion of an object to be inspected at a first detection position, wherein first transmission imaging data generated by the first transmission imaging component can be used to adjust the transmission imaging parameter configuration set used by the second transmission imaging component. Furthermore, when the target portion moves from the first detection position to the second detection position, the second transmission imaging component can perform transmission imaging of the target portion based on the transmission imaging parameter configuration set to obtain second transmission imaging data used to generate a detection image of the object to be inspected. Because the second transmission imaging data is generated based on the transmission imaging parameter configuration set adapted for the target transmission portion, it helps to present the internal structural information of the target portion represented by the second transmission imaging data in the detection image, achieving desired indicators such as clarity and contrast, thereby helping to improve the imaging quality of the detection image of the object to be inspected.

[0235] Figure 18 For example Figure 17 Schematic diagram of the optimized structure of the detection device shown in Figure 2. Figure 18 ,like Figure 17 The parameter determination module included in the detection device shown may include:

[0236] The attribute determination submodule 1731 is configured to determine the object part attribute of the target part of the object to be inspected based on the first transmission imaging data acquired by the pre-acquisition module 1710;

[0237] The attribute adaptation submodule 1733 is used to determine a transmission imaging parameter configuration set adapted to the target part based on the object part attributes determined by the attribute determination submodule 1731 .

[0238] In some examples, the object part attribute may include at least one of a part attenuation attribute and a part structure attribute, wherein the part attenuation attribute is used to characterize the attenuation capability of the transmitted radiation at the target part, and the part structure attribute is used to characterize the material structure of the target part. In this case, the attribute determination submodule 1731 may be specifically configured to:

[0239] Based on the first transmission imaging data acquired by the pre-acquisition module 1710, at least one of the site attenuation of the transmitted radiation at the target site, the equivalent atomic number of the target site, and the site structural topology of the target site is determined. For example, the method for determining the site attenuation, the equivalent atomic number, and the site structural topology can adopt the method mentioned in the relevant description of the detection system above, which will not be repeated here; and / or,

[0240] Based on at least one of the site attenuation degree, equivalent atomic number and site structural topology of the target site, at least one of the site attenuation attribute and the site structural attribute is determined. For example, the method for determining any one of the site attenuation attribute and the site structural attribute can adopt the method mentioned in the previous description of the detection system, which will not be repeated here.

[0241] Regardless of the attribute feature types included in the object part attributes and the parameter types included in the transmission imaging parameter configuration set, the attribute adaptation submodule 1733 can determine the transmission imaging parameter configuration set by looking up a table or calling an objective function.

[0242] For example, the attribute adaptation submodule 1733 can determine the transmission imaging parameter values corresponding to the attribute characteristics of the object part attributes by querying a pre-configured parameter configuration table, wherein the transmission imaging parameter configuration set includes the transmission imaging parameter values obtained by the query; or, the attribute adaptation submodule 1733 can also determine the transmission imaging parameter values corresponding to the attribute characteristics of the object part attributes by calling a pre-trained neural network model, wherein the transmission imaging parameter configuration set includes the transmission imaging parameter values output by the neural network model.

[0243] In the case where the object to be inspected is inspected in a scanning mode, multiple adjacent parts of the object to be inspected can be used as target parts in turn, causing first transmission imaging data corresponding to each of the multiple parts to be generated from the first transmission imaging component, the corresponding transmission imaging parameter configuration set to be determined, the corresponding transmission imaging parameter configuration set to take effect in the configuration of the second transmission imaging component, and the corresponding second transmission imaging data to be generated from the second transmission imaging component.

[0244] In order to support the case where the object to be inspected is inspected in a scanning mode, the detection device in this embodiment may further include an image generation module (not shown in the drawings) for:

[0245] performing grayscale correction processing on the second transmission imaging data corresponding to the plurality of parts of the object to be inspected, respectively, to obtain transmission imaging correction data corresponding to the plurality of parts, wherein the grayscale correction processing is used to compensate for imaging grayscale differences between the plurality of parts, the imaging grayscale differences being associated with parameter differences between the transmission imaging parameter configuration sets corresponding to the plurality of parts;

[0246] The detection image of the object to be inspected is obtained by using the transmission imaging correction data corresponding to multiple parts.

[0247] For example, if the first transmission imaging component is configured to generate corresponding first transmission imaging data based on a default transmission imaging parameter configuration set, with each of the multiple parts as the target part in turn, then the image generation module can be specifically configured to: use the first transmission imaging data corresponding to each of the multiple parts of the object to be inspected as correction reference data, perform grayscale correction processing on the second transmission imaging data corresponding to the part, and obtain transmission imaging correction data corresponding to the multiple parts of the object to be inspected.

[0248] In addition, the image generation module may be further configured to perform full-load background correction on the second transmission imaging data corresponding to the plurality of parts, or the transmission imaging correction data obtained by processing the second transmission imaging data.

[0249] In addition, in order to support the reversing function of the conveying direction of the object to be detected, the detection device in this embodiment may further include the following functional modules not shown in the drawings:

[0250] A direction detection module is used to determine the transmission direction of the object to be detected;

[0251] The component configuration module is used to determine a first transmission imaging component and a second transmission imaging component in a pair of transmission imaging components according to the determined transmission direction.

[0252] In another embodiment, a non-transitory computer-readable storage medium is provided. The non-transitory computer-readable storage medium can store instructions. When the instructions are executed by a processor, the processor can be used to cause the processor to execute the detection method in the aforementioned embodiment.

[0253] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A detection method based on transmission imaging, characterized in that: The detection method comprises: Acquiring first transmission imaging data obtained by a first transmission imaging assembly through transmission imaging of a target portion of the object to be inspected at a first detection position, wherein the first detection position is a pre-detection position before the target portion reaches a second detection position, and a plurality of mutually adjacent portions of the object to be inspected serve as the target portions in sequence, and each of the plurality of portions, when serving as the target portion, is sequentially imaged by the first transmission imaging assembly at the first detection position and by the second transmission imaging assembly at the second detection position; Determining, for the second transmission imaging component, a transmission imaging parameter configuration set adapted to each of the plurality of parts serving as the target part in sequence, based on the corresponding first transmission imaging data generated by the first transmission imaging component in sequence with each of the plurality of parts serving as the target part; The transmission imaging parameter configuration set is controlled to take effect in the configuration of the second transmission imaging component, so that the second transmission imaging component responds to each of the multiple parts serving as the target part in sequence from the first detection position to the second detection position, and performs transmission imaging on each of the multiple parts serving as the target part in sequence based on the transmission imaging parameter configuration set adapted to the part, thereby obtaining second transmission imaging data corresponding to each part of the multiple parts; wherein the detection image of the object to be inspected is formed by splicing transmission imaging correction data obtained by performing grayscale correction processing on the second transmission imaging data corresponding to the multiple parts, and the grayscale correction processing is used to compensate for the imaging grayscale differences between the multiple parts.

2. The detection method according to claim 1, wherein The step of determining, for the second transmission imaging component, a transmission imaging parameter configuration set adapted for each of the plurality of parts serving as the target part in sequence based on the corresponding first transmission imaging data generated by the first transmission imaging component with each of the plurality of parts serving as the target part in sequence, includes: determining, based on the first transmission imaging data corresponding to each of the plurality of parts sequentially serving as the target part, an object part attribute of each of the plurality of parts of the object to be inspected sequentially serving as the target part; Based on the object site attributes of each site in the plurality of sites that serves as the target site in sequence, the transmission imaging parameter configuration set adapted to each site in the plurality of sites that serves as the target site in sequence is determined.

3. The detection method according to claim 2, characterized in that The object part attribute includes at least one of a part attenuation attribute and a part structure attribute, wherein the part attenuation attribute is used to characterize the attenuation ability of the transmitted ray at the target part, and the part structure attribute is used to characterize the material structure of the target part; The determining, based on the first transmission imaging data corresponding to each of the multiple parts serving as the target part in sequence, the object part attribute of each of the multiple parts of the object to be inspected serving as the target part in sequence, includes the following steps when each of the multiple parts serves as the target part: determining, based on the first transmission imaging data corresponding to the target site, at least one of a site attenuation degree of the transmission rays generated by the first transmission imaging assembly at the target site, an equivalent atomic number of the target site, and a site structural topology of the target site; At least one of the site attenuation property and the site structural property of the target site is determined based on at least one of the site attenuation degree of the transmitted ray at the target site, the equivalent atomic number of the target site, and the site structural topology of the target site.

4. The detection method according to claim 3, characterized in that The determining, based on at least one of the attenuation degree, the atomic number, and the structural topology, at least one of the site attenuation attribute and the site structural attribute of the target site comprises: Determining the equivalent penetration thickness of the target part corresponding to the attenuation degree of the transmitted ray at the target part, and / or determining the atomic number value of the equivalent atomic number of the target site, and / or, Determining the complexity of the part structure corresponding to the part structure topology of the target part, and / or Determining the number of material types corresponding to the equivalent atomic number of the target site; The attenuation property of the target site includes at least one of the equivalent penetration thickness of the target site and the atomic number value; Furthermore, the site structural attribute of the target site includes at least one of the complexity of the site structure of the target site and the number of types of materials in the site.

5. The detection method according to claim 2, characterized in that The object part attribute includes a part attenuation attribute, wherein the part attenuation attribute is used to characterize the attenuation ability of the transmitted ray at the target part; The method of determining the transmission imaging parameter configuration set adapted to each of the multiple parts serving as the target part in sequence based on the object part properties of each of the multiple parts serving as the target part in sequence includes the following steps when each of the multiple parts serves as the target part: determining ray characteristic parameters adapted to the part attenuation properties of the target part, wherein the ray characteristic parameters are used to configure the ray characteristics of the transmission ray generated by the second transmission imaging component.

6. The detection method according to claim 5, characterized in that The site attenuation attribute includes at least one of the site equivalent penetration thickness and the atomic number value of the target site; The determining of the ray characteristic parameters that are compatible with the site attenuation properties of the target site includes: determining at least one of the ray energy spectrum and the ray intensity of the transmission ray generated by the second transmission imaging component based on the site equivalent penetration thickness of the target site and the atomic number value, wherein the ray characteristic parameters include at least one of the ray energy spectrum and the ray intensity.

7. The detection method according to claim 2, characterized in that The object part attributes include part structure attributes, wherein the part structure attributes are used to characterize the material structure of the target part; The method of determining the transmission imaging parameter configuration set that is adapted to each of the multiple parts serving as the target part in sequence based on the object part properties of each part of the multiple parts serving as the target part in sequence includes the following steps when each of the multiple parts serves as the target part: determining imaging sensing parameters that are adapted to the part structural properties of the target part, wherein the imaging sensing parameters are used to configure the sensing characteristics of the second transmission imaging component to the transmitted rays.

8. The detection method according to claim 7, characterized in that The part structural attribute includes at least one of the part structural complexity and the number of part material types of the target part; The determining of imaging sensing parameters that are compatible with the site structural properties of the target site includes: determining the imaging sensing parameters based on the site structural complexity of the target site and the number of types of materials in the site, wherein the imaging sensing parameters include at least one of the following parameters: the integration time of the second transmission imaging component for sensing imaging of transmitted rays, the imaging resolution of the second transmission imaging component for sensing imaging of transmitted rays, and the sensing sensitivity of the second transmission imaging component to transmitted rays.

9. The detection method according to claim 1, wherein The controlling the transmission imaging parameter configuration set to enable the configuration of the second transmission imaging component corresponding to the second detection position to take effect includes: Based on the prediction result of the relative position change of the target part with respect to the second transmission imaging assembly, the configuration effective time of the transmission imaging parameter configuration set adapted to each part of the multiple parts as the target part in turn is determined.

10. The detection method according to claim 1, characterized in that The first transmission imaging component is configured to sequentially generate corresponding first transmission imaging data with each site in the plurality of sites as the target site based on a default transmission imaging parameter configuration set; The imaging grayscale difference is associated with the parameter difference between the transmission imaging parameter configuration sets corresponding to the multiple parts, and the grayscale correction processing includes: using the first transmission imaging data corresponding to each part of the multiple parts as correction reference data, performing grayscale correction processing on the second transmission imaging data corresponding to the part, and obtaining the transmission imaging correction data corresponding to the multiple parts.

11. The detection method according to claim 1, characterized in that The first transmission imaging component includes a first sensing array, the second transmission imaging component includes a second sensing array, and: The first transmission imaging component further includes a first ray source that generates transmission rays toward the first sensing array, and the second transmission imaging component further includes a second ray source that generates transmission rays toward the second sensing array, and the first ray source and the second ray source are independent of each other; or The first transmission imaging component and the second transmission imaging component reuse a shared ray source.

12. A detection device based on transmission imaging, characterized in that: The detection device comprises: a pre-acquisition module, configured to acquire first transmission imaging data obtained by a first transmission imaging assembly through transmission imaging of a target portion of the object to be inspected at a first detection position, wherein the first detection position is a pre-acquisition position before the target portion reaches a second detection position, and a plurality of mutually adjacent portions of the object to be inspected are sequentially used as the target portions, and each of the plurality of portions, when serving as the target portion, is sequentially imaged by the first transmission imaging assembly at the first detection position and by the second transmission imaging assembly at the second detection position; a parameter determination module, configured to determine, for the second transmission imaging assembly, a transmission imaging parameter configuration set adapted for each of the plurality of parts serving as the target part in sequence, based on the corresponding first transmission imaging data generated by the first transmission imaging assembly with each of the plurality of parts serving as the target part in sequence; a configuration management module for controlling the effectiveness of the transmission imaging parameter configuration set in the configuration of the second transmission imaging component, so that the second transmission imaging component responds to each of the multiple parts serving as the target part in sequence from the first detection position to the second detection position, and performs transmission imaging on each of the multiple parts serving as the target part in sequence based on the transmission imaging parameter configuration set adapted to the part, thereby obtaining second transmission imaging data corresponding to each of the multiple parts; wherein the detection image of the object to be inspected is formed by splicing transmission imaging correction data obtained by performing grayscale correction processing on the second transmission imaging data corresponding to the multiple parts, and the grayscale correction processing is used to compensate for imaging grayscale differences between the multiple parts.

13. The detection device according to claim 12, characterized in that: The parameter determination module includes: an attribute determination submodule, configured to determine an object part attribute of each part of the object to be inspected that serves as the target part in sequence among the multiple parts based on the first transmission imaging data corresponding to each part of the multiple parts that serves as the target part in sequence; The attribute adaptation submodule is used to determine the transmission imaging parameter configuration set adapted to each of the multiple parts serving as the target part in sequence based on the object part attributes of each of the multiple parts serving as the target part in sequence.

14. A detection system based on transmission imaging, characterized in that: The detection system comprises: An object carrying mechanism, used for carrying an object to be inspected; A transmission imaging mechanism, used for performing transmission imaging on the relatively moving object to be inspected, wherein the transmission imaging mechanism comprises a first transmission imaging component and a second transmission imaging component arranged at intervals; A processing component, wherein the processing component is used to execute the detection method according to any one of claims 1 to 11.

15. The detection system according to claim 14, characterized in that: The first transmission imaging component includes a first sensing array, the second transmission imaging component includes a second sensing array, and: The first transmission imaging component further includes a first ray source that generates transmission rays toward the first sensing array, and the second transmission imaging component further includes a second ray source that generates transmission rays toward the second sensing array, and the first ray source and the second ray source are independent of each other; or The first transmission imaging component and the second transmission imaging component reuse a shared ray source.

16. The detection system according to claim 15, characterized in that: The shared ray source is time-division multiplexed by the first transmission imaging component and the second transmission imaging component by switching between the first detection position and the second detection position; or, The shared ray source generates transmission rays directed toward the first sensing array and the second sensing array respectively.

17. The detection system according to claim 14, characterized in that: The first transmission imaging component and the second transmission imaging component are both arranged to perform transmission imaging of the object to be inspected in a vertical direction or a horizontal direction; or, One of the first transmission imaging component and the second transmission imaging component is arranged to perform transmission imaging on the object to be inspected in a vertical direction, and the other is arranged to perform transmission imaging on the object to be inspected in a horizontal direction.

18. The detection system according to claim 17, characterized in that: The processing component further generates an additional detection image having a different imaging angle from the detection image based on the first transmission imaging data generated by the first transmission imaging component having a different transmission imaging direction from the second transmission imaging component.

19. The detection system according to claim 14, characterized in that The first transmission imaging component and the second transmission imaging component are arranged in pairs, forming at least two pairs.

20. The detection system according to claim 19, characterized in that The processing component is configured to generate at least two detection images based on the second transmission imaging data provided by each second transmission imaging component, and fuse the at least two detection images into a fused image.

21. The detection system according to claim 14, wherein: The first transmission imaging component is associated with at least two second transmission imaging components disposed at intervals; wherein the transmission imaging parameter configuration set determined based on the first transmission imaging data is effective in at least two associated second transmission imaging component configurations to generate an image sequence comprising at least two detection images for the object to be inspected; Furthermore, the at least two detection images in the image sequence are used to be fused into a fused image based on time delay integration.

22. A non-transitory computer-readable storage medium, characterized in that The non-transitory computer-readable storage medium stores instructions, which, when executed by a processor, are used to cause the processor to perform the detection method according to any one of claims 1 to 11.

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