Image acquisition method, controller, image acquisition system and device

Abstract

The present disclosure provides an image acquisition method, a controller, an image acquisition system and a device. Among them, the method includes: obtaining the initial positions at each set angle in at least one set angle where the sample to be acquired is located and the target positions at each set angle; for any one of the initial positions at each set angle, determining whether any one of the initial positions matches the corresponding target position; when any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, controlling a position adjustment device to perform position adjustment on any one of the initial positions according to the corresponding target position; controlling an image collector to perform image acquisition on the sample to be acquired after position adjustment. Thus, by automatically controlling the position adjustment device to perform position adjustment on any one of the initial positions, manual adjustment is not required, the accuracy of position adjustment is improved, and further, the sample to be acquired can be made to be in the best scanning position at the center of the scanning field of view, maximizing the scanning quality.

Description

Technical Field

[0001] The present disclosure relates to the technical field of rock scanning, and in particular, to an image acquisition method, a controller, an image acquisition system and a device. Background Art

[0002] Computed Tomography (CT) technology can obtain high-resolution mineral components and pore structures of an object without damaging the sample to be collected (for example, a core sample), providing powerful technical support for quantitative characterization and three-dimensional reconstruction of the microscopic structure of the object. When performing CT scanning on the sample to be collected, it is often necessary to adjust the position of the sample on the sample stage in the height direction and the horizontal direction so that it is exactly on the central connection line between the radiation source and the flat panel detector, that is, the center of the visualization window of the scanning software, in order to obtain the best global scanning effect.

[0003] However, in the related art, the position of the sample on the CT scanning sample stage can only be manually adjusted. The manual adjustment method is to judge whether it is at the center position of the visualization window by the naked eye, and there are slight deviations from the most ideal sample position, making it difficult to present the best sample scanning effect. Summary of the Invention

[0004] The present disclosure aims to at least solve one of the technical problems in the above technologies to some extent.

[0005] To this end, the present disclosure provides an image acquisition method, a controller, an image acquisition system and a device. By judging whether any one of the initial positions at each set angle where the sample to be collected is located matches the corresponding target position, and when any one of the initial positions does not match the corresponding target position, controlling the position adjustment device to automatically adjust the position of any one of the initial positions, and performing image acquisition on the adjusted sample to be collected. Thus, by controlling the position adjustment device to automatically adjust the position of any one of the initial positions, manual adjustment is not required, the accuracy of position adjustment is improved, and furthermore, the sample to be collected can be placed at the best scanning position in the center of the scanning field of view, maximizing the scanning quality.

[0006] Embodiments of the first aspect of the present disclosure provide an image acquisition method, including: obtaining initial positions at each of at least one set angle where a sample to be acquired is located and target positions at each of the set angles; for any one of the initial positions at each of the set angles, determining whether the any one of the initial positions matches the corresponding target position; when the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, controlling a position adjustment device to adjust the position of the any one of the initial positions according to the corresponding target position to obtain the sample to be acquired after position adjustment; and controlling an image acquisition device to acquire an image of the sample to be acquired after position adjustment.

[0007] Embodiments of the second aspect of the present disclosure provide a controller, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and when the instructions are executed by the at least one processor, the at least one processor is enabled to execute the method described in the embodiments of the first aspect of the present disclosure.

[0008] Embodiments of the third aspect of the present disclosure provide an image acquisition system, including: a controller, a position adjustment device, and an image acquisition device; wherein, the controller is configured to obtain initial positions at each of at least one set angle where a sample to be acquired is located and target positions at each of the set angles; for any one of the initial positions at each of the set angles, determining whether the any one of the initial positions matches the corresponding target position; when the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, controlling the position adjustment device to adjust the position of the any one of the initial positions according to the corresponding target position to obtain the sample to be acquired after position adjustment; and controlling the image acquisition device to acquire an image of the sample to be acquired after position adjustment; the position adjustment device is connected to the controller and is configured to adjust the position of the any one of the initial positions under the control of the controller; the image acquisition device is connected to the controller and is configured to, when the any one of the initial positions matches the corresponding target position, acquire an image of the sample to be acquired after position adjustment under the control of the controller.

[0009] The fourth aspect embodiment of the present disclosure provides an image acquisition device, including: an acquisition module, configured to acquire the initial positions at each of at least one set angle where the sample to be acquired is located and the target positions at each of the set angles; a determination module, configured to determine, for any one of the initial positions at each of the set angles, whether the any one of the initial positions matches the corresponding target position; a processing module, configured to, when the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, control a position adjustment device to perform position adjustment on the any one of the initial positions according to the corresponding target position, so as to obtain the sample to be acquired after position adjustment; and an acquisition module, configured to control an image acquisition device to acquire an image of the sample to be acquired after position adjustment.

[0010] The fifth aspect embodiment of the present disclosure provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the method described in the foregoing first aspect is implemented.

[0011] The sixth aspect embodiment of the present disclosure provides a computer program product, including computer instructions, on which a computer program is stored, and when the computer instructions are executed by a processor, the method described in the foregoing first aspect is implemented.

[0012] The technical solution of the present disclosure is to acquire the initial positions at each of the set angles where the sample to be acquired is located and the target positions at each of the set angles; determine, for any one of the initial positions at each of the set angles, whether the any one of the initial positions matches the corresponding target position; when the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, control a position adjustment device to perform position adjustment on the any one of the initial positions according to the corresponding target position, so as to obtain the sample to be acquired after position adjustment; and control an image acquisition device to acquire an image of the sample to be acquired after position adjustment. By determining whether any one of the initial positions at each of the set angles where the sample to be acquired is located matches the corresponding target position, and when any one of the initial positions does not match the corresponding target position, controlling the position adjustment device to automatically perform position adjustment on the any one of the initial positions and acquire an image of the sample to be acquired after adjustment, the sample to be acquired can be made to be in the best scanning position at the center of the scanning field of view, thereby maximizing the scanning quality.

[0013] Additional aspects and advantages of the present disclosure will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present disclosure. Description of the Drawings

[0014] The above and / or additional aspects and advantages of the present disclosure will become apparent and be readily understood from the following description of the embodiments in conjunction with the drawings, where:

[0015] Figure 1 Schematic flowchart of an image acquisition method provided according to an embodiment of the present disclosure;

[0016] Figure 2 Schematic flowchart of an image acquisition method provided according to another embodiment of the present disclosure;

[0017] Figure 3 Schematic diagram of a reference line provided according to an embodiment of the present disclosure;

[0018] Figure 4 Schematic flowchart of an image acquisition method provided according to another embodiment of the present disclosure;

[0019] Figure 5 Schematic flowchart of an image acquisition method provided according to another embodiment of the present disclosure;

[0020] Figure 6 Schematic diagram of a reference vertical central axis provided according to an embodiment of the present disclosure;

[0021] Figure 7 Schematic diagram of a reference horizontal central axis provided according to an embodiment of the present disclosure;

[0022] Figure 8 Schematic structural diagram of an image acquisition system provided according to an embodiment of the present disclosure;

[0023] Figure 9 Schematic structural diagram of a sample stage provided according to an embodiment of the present disclosure;

[0024] Figure 10 Schematic structural diagram of a position adjustment device according to an embodiment of the present disclosure;

[0025] Figure 11 Schematic structural diagram of a three - stage axial telescopic tube according to an embodiment of the present disclosure;

[0026] Figure 12 Schematic structural diagram of a sample fixing stage according to an embodiment of the present disclosure;

[0027] Figure 13 Schematic structural diagram of an image acquisition device provided according to an embodiment of the present disclosure;

[0028] Figure 14 Schematic block diagram of a controller provided according to an embodiment of the present disclosure;

[0029] Description of the reference numerals in the drawings: 6-1: Edge and center position recording window; 6-2: Axial position recording line; 6-3: Crosshair; 7-1: Horizontal position recording line; 1010: Fixed base; 1020: Position adjustment structure; 1021: Vertical adjustment controller; 1022: Three-stage axial telescopic tube; 1023: Horizontal adjustment controller; 1024: Horizontal adjustment table; 1025: Sample fixing table. Detailed implementation manners

[0030] The embodiments of the present disclosure will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present disclosure, and should not be construed as a limitation of the present disclosure.

[0031] In the related art, the position of the sample on the CT scanning sample table is manually adjusted. During this process, it is necessary to frequently open and close the radiation source and the electric protective lead door of the scanning chamber, which not only consumes time, but also causes wear of the radiation source and the electric lead door, increasing the probability of failure of the CT scanning system.

[0032] In view of the above problems, the present disclosure proposes an image acquisition method, a controller, an image acquisition system and a device.

[0033] The image acquisition method, the controller, the image acquisition system and the device of the embodiments of the present disclosure will be described below with reference to the drawings.

[0034] Figure 1 It is a schematic flow chart of the image acquisition method provided according to an embodiment of the present disclosure.

[0035] The execution subject of the heating control method of the embodiments of the present disclosure is an image acquisition device, and the device can be a controller. In the embodiments of the present disclosure, the image acquisition device is used as a controller for exemplary illustration.

[0036] As Figure 1 shown, the method may include the following steps:

[0037] Step 101, obtain the initial positions and the target positions at each set angle in at least one set angle where the sample to be acquired is located.

[0038] It should be understood that in order to scan the sample at various angles to obtain corresponding scanned images, the sample stage is a rotatable and sample-placeable tabletop. Furthermore, based on the sample stage, at least one initial position of the sample to be collected at a set angle can be obtained. For example, when the sample stage rotates 0 degrees, the initial position of the sample to be collected at a set angle of 0 degrees can be obtained; when the sample stage rotates 90 degrees, the initial position of the sample to be collected at a set angle of 90 degrees can be obtained. Similarly, when the sample stage rotates 180 degrees, 270 degrees, and 360 degrees, the initial positions at the corresponding angles can be obtained respectively. Among them, the initial position coordinates can be two-dimensional coordinates.

[0039] It should be noted that the target position at each set angle is the optimal position of the scanning field of view of the sample stage when it rotates by the set angle, and among them, the target position at each set angle can be preset in advance.

[0040] Step 102, for any one of the initial positions among the initial positions at each set angle, determine whether any one of the initial positions matches the corresponding target position.

[0041] As a possible implementation manner of the embodiment of the present disclosure, for any one of the initial positions among the initial positions at each set angle, it can be determined whether any one of the initial positions matches the corresponding target position. For example, at least one set angle includes 0 degrees, 90 degrees, 180 degrees, 270 degrees, and 360 degrees. It can be respectively determined whether the initial position at 0 degrees matches the target position corresponding to 0 degrees, whether the initial position at 90 degrees matches the target position corresponding to 90 degrees, whether the initial position at 180 degrees matches the target position corresponding to 180 degrees, whether the initial position at 270 degrees matches the target position corresponding to 270 degrees, and whether the initial position at 360 degrees matches the target position corresponding to 360 degrees.

[0042] As a possible implementation of the embodiments of the present disclosure, at least one set angle may include 0 degrees and 90 degrees. For the initial positions at 0 degrees and 90 degrees, it is possible to respectively determine whether the initial position at 0 degrees matches the target position corresponding to 0 degrees, and whether the initial position at 90 degrees matches the target position at 90 degrees. When the initial position at 0 degrees matches the target position corresponding to 0 degrees, it is possible to use whether the initial position at 180 degrees matches the target position corresponding to 180 degrees to verify the match between the initial position at 0 degrees and the target position corresponding to 0 degrees; when the initial position at 90 degrees matches the target position at 90 degrees, it is possible to use whether the initial position at 270 degrees matches the target position corresponding to 270 degrees to verify the match between the initial position at 90 degrees and the target position corresponding to 90 degrees. For example, when the initial position at 180 degrees does not match the target position corresponding to 180 degrees, it is determined that the position of the sample to be collected after position adjustment at 0 degrees does not match the target position corresponding to 0 degrees; when the initial position at 180 degrees matches the target position corresponding to 180 degrees, it is determined that the position of the sample to be collected after position adjustment at 0 degrees matches the target position corresponding to 0 degrees.

[0043] Step 103, when any initial position does not match the corresponding target position, in response to the adjustment instruction, according to the corresponding target position, control the position adjustment device to adjust the position of any initial position to obtain the sample to be collected after position adjustment.

[0044] Furthermore, when any initial position does not match the corresponding target position, in response to the adjustment instruction, control the position adjustment device to adjust any initial position to the corresponding target position so that the sample to be collected is located at the best position in the scanning field of view. Among them, the position adjustment device is a device for adjusting the position of the sample to be collected.

[0045] Step 104, control the image collector to collect an image of the sample to be collected after position adjustment.

[0046] Furthermore, control the image collector to collect an image of the sample to be collected after position adjustment to obtain a scanning image of the sample to be collected at the best position in the scanning field of view.

[0047] In summary, by determining whether any one of the initial positions at each of the at least one set angle where the sample to be collected is located matches the corresponding target position, and when any one of the initial positions does not match the corresponding target position, controlling the position adjustment device to automatically adjust the position of any one of the initial positions, and performing image acquisition on the sample to be collected after adjustment. Thus, the position adjustment device can be controlled to automatically adjust the position of any one of the initial positions, without manual adjustment, improving the accuracy of position adjustment. Furthermore, the sample to be collected can be placed at the best scanning position in the center of the scanning field of view, maximizing the scanning quality.

[0048] To clearly illustrate how to determine whether any one of the initial positions matches the corresponding target position, as Figure 2 shown, Figure 2 is a schematic flowchart of an image acquisition method according to another embodiment of the present disclosure. In the embodiments of the present disclosure, at least one central axis of the sample to be collected can be matched with a reference line of the corresponding target position to determine whether any one of the initial positions matches the corresponding target position. Figure 2 The embodiments shown may include the following steps:

[0049] Step 201, obtain the initial positions at each of the at least one set angle where the sample to be collected is located and the target positions at each of the set angles.

[0050] Step 202, for any one of the initial positions at each of the set angles, determine the reference line of the target position corresponding to any one of the initial positions; wherein, the reference line includes a horizontal reference line and a vertical reference line that intersect perpendicularly.

[0051] It should be understood that the target position is the best position in the scanning field of view, and the best scanning position includes the best vertical (axial) position and the best horizontal position, that is, the center of the scanning field of view. As a possible implementation manner of the embodiments of the present disclosure, in order to accurately determine whether any one of the initial positions matches the corresponding target position, as Figure 3 shown, the reference line corresponding to the target position can be preset. The reference line includes a horizontal reference line and a vertical reference line that intersect perpendicularly, and the intersection point of the horizontal reference line and the vertical reference line is the central coordinate point of the target position.

[0052] Step 203, determine at least one central axis of the sample to be collected according to any one of the initial positions.

[0053] As an example, according to the central coordinate point of any one of the initial positions, determine at least one horizontal central axis of the sample to be collected and the vertical central axis passing through the central coordinate point of the initial position.

[0054] Optionally, the central coordinate point of any initial position can be determined. Based on this central coordinate point, the horizontal central axis and the vertical central axis passing through this central coordinate point can be determined, and further, the horizontal central axis parallel to the horizontal central axis can be determined. At least one horizontal central axis may include: the horizontal central axis passing through this central coordinate point and the horizontal central axis parallel to this horizontal central axis.

[0055] Among them, at least one reference positioning line of the sample to be collected can be determined according to any coordinate position in any initial position, and the central coordinate point of this any initial position can be determined according to the reference positioning line. Among them, at least one reference positioning line includes the reference horizontal central axis and the reference vertical central axis of the sample to be collected in any initial position.

[0056] Step 204, determine whether any initial position matches the corresponding target position according to at least one central axis, the horizontal reference line, and the vertical reference line.

[0057] Optionally, determine whether the vertical central axis matches the vertical reference line; determine the reference coordinate range corresponding to the horizontal reference line; determine whether the coordinate ranges corresponding to the horizontal axes in at least one horizontal central axis are within the reference coordinate range; when the vertical central axis matches the vertical reference line and the coordinate ranges corresponding to the horizontal central axes are all within the reference coordinate range, determine that any initial position matches the corresponding target position.

[0058] That is to say, under the angle corresponding to this any initial position, the judgment criterion for the vertical optimal position is that the vertical central axis of the sample to be collected in the visualization window coincides with the vertical reference line (vertical line) of the reference line (crosshair), and the judgment criterion for the horizontal optimal position is that both ends of the sample to be collected in the visualization window are within the visual field range and are symmetrically distributed along the horizontal line of the reference line. Furthermore, it can be determined whether the vertical central axis coincides with the vertical reference line, and it can be determined whether the coordinate ranges corresponding to the horizontal axes in at least one horizontal central axis are within the reference coordinate range. When the vertical central axis matches the vertical reference line and the coordinate ranges corresponding to the horizontal central axes are all within the reference coordinate range, determine that any initial position matches the corresponding target position.

[0059] Step 205, when any initial position does not match the corresponding target position, in response to the adjustment instruction, control the position adjustment device to adjust the position of any initial position according to the corresponding target position to obtain the sample to be collected after position adjustment.

[0060] Step 206, control the image collector to collect an image of the sample to be collected after position adjustment.

[0061] It should be noted that the execution processes of step 201 and steps 205 to 206 can be implemented in any one of the embodiments of the present disclosure respectively. The embodiments of the present disclosure do not make any limitations in this regard and will not be elaborated further.

[0062] In summary, for any one of the initial positions at each set angle, a reference line corresponding to the target position of any one of the initial positions is determined; wherein, the reference line includes a horizontal reference line and a vertical reference line that are perpendicularly intersecting; according to the coordinates of any one of the initial positions, at least one central axis of the sample to be collected is determined; according to at least one central axis, the horizontal reference line, and the vertical reference line, it is determined whether any one of the initial positions matches the corresponding target position. Thus, by matching at least one central axis of the sample to be collected with the reference line of the corresponding target position, it can be determined whether any one of the initial positions matches the corresponding target position.

[0063] To clearly illustrate how to control the position adjustment device to adjust the position of any one of the initial positions according to the corresponding target position, as Figure 4 shown, Figure 4 is a schematic flowchart of an image acquisition method provided according to another embodiment of the present disclosure. In the embodiments of the present disclosure, the position adjustment device can be controlled to adjust the position of any one of the initial positions according to the coordinate difference between the central coordinate point corresponding to any one of the initial positions and the central coordinate point of the corresponding target position. Figure 6 The embodiments shown may include the following steps:

[0064] Step 401, obtain the initial positions and the target positions at each set angle among at least one set angle where the sample to be collected is located.

[0065] Step 402, for any one of the initial positions at each set angle, determine whether any one of the initial positions matches the corresponding target position.

[0066] Step 403, determine the central coordinate point corresponding to any one of the initial positions.

[0067] Optionally, according to any one of the initial positions, at least one reference positioning line of the sample to be collected is determined, wherein at least one reference positioning line includes a reference horizontal central axis and a reference vertical central axis of the sample to be collected at any one of the initial positions.

[0068] That is to say, according to any coordinate point in any initial position, a vertical reference positioning line can be added to the visualization window to measure the lateral edge position information of the sample to be collected, and the position information of the vertical center of the sample can be automatically output. In addition, a horizontal reference positioning line can be added to the visualization window to measure the vertical edge position information of the sample to be collected, and the position information of the horizontal center of the sample can be automatically output. The position information of the horizontal center and the position information of the vertical center are the center coordinate points of any initial position.

[0069] Step 404: Obtain the coordinate difference between the center coordinate point and the center coordinate point corresponding to the target position.

[0070] Furthermore, compare the center coordinate point of the initial position with the center coordinate point corresponding to the target position (the intersection point of the vertical reference line and the horizontal reference line) to obtain the coordinate difference between the center coordinate point of the initial position and the center coordinate point corresponding to the target position.

[0071] Step 405: According to the coordinate difference, control the position adjustment device to adjust the position of any initial position to obtain the sample to be collected after position adjustment.

[0072] Furthermore, according to the coordinate difference, control the position adjustment device to adjust the position of any initial position to minimize the coordinate difference, so that the sample to be collected after position adjustment can be obtained. Among them, the position adjustment device is a device for position adjustment.

[0073] It should be noted that since the position adjustment device can be controlled to automatically adjust the initial position, it is possible to avoid the staff from frequently opening and closing the radiation source and the electric shielding lead door of the scanning chamber, minimize the loss and failure probability of the electric lead door and the radiation source to the greatest extent, and at the same time reduce the radiation threat to the experimental operator.

[0074] Step 406: Control the image collector to collect images of the sample to be collected after position adjustment.

[0075] It should be noted that the execution processes of steps 401-402 and step 406 can be implemented in any one of the embodiments of the present disclosure respectively. The embodiments of the present disclosure do not limit this and will not be described in detail.

[0076] In summary, the position adjustment device is controlled to adjust the position of the sample to be collected through the coordinate difference between the central coordinate point corresponding to the initial position and the central coordinate point of the corresponding target position. Thus, the position adjustment device can automatically adjust the position of the sample to be collected according to the coordinate difference without manual adjustment, improving the accuracy of position adjustment. Furthermore, the sample to be collected can be placed at the best scanning position in the center of the scanning field of view, maximizing the scanning quality. Moreover, it is possible to avoid the staff from frequently opening and closing the radiation source and the electric shielding lead door of the scanning chamber, minimizing the loss and failure probability of the electric lead door and the radiation source, and at the same time reducing the radiation threat to the experimental operators.

[0077] To illustrate the above embodiments more clearly, examples are given below for illustration.

[0078] For example, as Figure 5 shown, taking the sample to be collected as a core sample and taking the control by the Bluetooth module as an example of the controller, in the first step, open the image acquisition and visualization software on the computer side, and set the sample stage of the CT scanning system to the zero position (i.e., the rotation angle is 0 degrees). After fixing the core sample, close the electric shielding lead door of the CT scanning system and turn on the radiation source.

[0079] Among them, through the motion control window of the CT scanning system, adjust the horizontal and vertical positions of the radiation source and the flat panel detector until the scanned sample can completely appear in the visualization window during the 360° rotation, and the scanning resolution meets the test requirements. Set the parameters such as voltage, current, exposure time, and image merging number required for scanning in the scanning parameter setting window.

[0080] Optionally, the scanning resolution is the distance from the core sample to the radiation source (e.g., SOD in the window = 582.55 mm) divided by the distance between the radiation source and the flat panel detector (SDD in the window = 1283.97 mm). Therefore, the scanning resolution in this embodiment can be 582.55 ÷ 1283.97 = 0.4537 mm = 45.37 um.

[0081] In the second step, as Figure 6 shown, observe the core sample using the visualization window and add crosshairs as a reference. Add axial position recording lines (referring to the vertical central axis), align them with the left and right edges of the core sample respectively, and double-click to automatically collect the position parameters into the edge and center position recording window (as shown in 6-1 in Figure 6 ), and the recording line and position parameters of the sample center are automatically displayed. By comparing the axial position recording line of the sample center (as shown in 6-2 in Figure 6 ) with the crosshairs (reference line, as shown in Figure 6To determine the positional relationship between the current position of the core sample and the positions shown in Figure 6-3, and to judge whether the current position of the core sample is the optimal scanning position, that is, whether the vertical line of the crosshair coincides with the vertical center axis recording line of the sample. Then, as Figure 7 shown, add a horizontal position recording line (referring to the horizontal center axis, as shown in Figure 7 Figure 7-1). After collecting the position information of the upper and lower edges and obtaining the center position, make a similar judgment. If the current position of the sample is the optimal position, there is no need to fine-tune the sample position, and the CT scan of the sample can be performed after setting the scanning parameters; if it is not the optimal position, the sample position needs to be finely adjusted through the Bluetooth control module.

[0082] Step 3: The scanning positions include the axial optimal position and the transverse optimal position. The judgment criterion for the axial optimal position is that the vertical line of the crosshair coincides with the vertical center axis recording line of the core sample in the visualization window, and during the 360° rotation of the scanned sample, they always remain coincident without eccentric rotation. The judgment criterion for the transverse optimal position is that both ends of the core sample are within the field of view in the visualization window and are symmetrically distributed along the horizontal line of the crosshair, that is, the horizontal center axis recording line of the core sample coincides with the horizontal line of the crosshair;

[0083] Step 4: The vertical adjustment controller (axial adjustment control motor) and the horizontal adjustment controller (transverse adjustment control motor) establish a communication connection with the operation terminal through the Bluetooth module. The controller receives the control instructions from the operation terminal through the Bluetooth module and controls the motor to remotely adjust the position of the sample stage. Observe whether the sample is in the optimal scanning position in the image acquisition visualization software window supporting the CT scanning system. The control interface of the operation terminal is provided with a direction control module and a distance input module. The position of the sample stage is remotely adjusted by inputting the moving distance and clicking the corresponding direction button. The direction control module includes direction control buttons such as "front", "rear", "left", "right", "up", and "down". The input distance in the distance input module is the distance relationship between the vertical or horizontal center axis recording line of the sample and the vertical or horizontal line of the crosshair in Step 3.

[0084] Step 5: When the rotation angle of the sample stage of the scanning system is 0°, after the core sample is in the optimal scanning position, adjust the rotation angle of the sample stage to 90° through the scanning software, and repeat Step 4 to ensure that the sample is also in the optimal scanning position at 90°. Then rotate to 180°, 270°, 360°, etc. to observe whether the sample is still in the optimal scanning position. After the position adjustment of the core sample is successful, the scanning parameters and modes can be set and the CT scan of the sample can be performed.

[0085] The image acquisition method according to an embodiment of the present disclosure includes: obtaining the initial positions and target positions at each set angle among at least one set angle where the sample to be acquired is located; for any one of the initial positions at each set angle, determining whether the any one of the initial positions matches the corresponding target position; when the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, controlling a position adjustment device to adjust the position of the any one of the initial positions according to the corresponding target position to obtain the sample to be acquired after position adjustment; and controlling an image acquisition device to acquire an image of the sample to be acquired after position adjustment. Thus, by automatically controlling the position adjustment device to adjust the position of any one of the initial positions, manual adjustment is not required, improving the accuracy of position adjustment. Furthermore, the sample to be acquired can be placed at the best scanning position at the center of the scanning field of view, maximizing the scanning quality.

[0086] To implement the above embodiment, an embodiment of the present disclosure also provides a controller, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein, the memory stores instructions executable by the at least one processor, and when the instructions are executed by the at least one processor, the at least one processor is enabled to execute Figures 1 to 7 the method described above.

[0087] To implement the above embodiment, the present disclosure also provides an image acquisition system.

[0088] Figure 8 As shown in the structural schematic diagram of the image acquisition system according to an embodiment of the present disclosure, Figure 8 as shown, the image acquisition system 800 includes: a controller 810, a position adjustment device 820, and an image acquisition device 830.

[0089] Among them, the controller 810 is configured to obtain the initial positions and target positions at each set angle among at least one set angle where the sample to be acquired is located; for any one of the initial positions at each set angle, determine whether the any one of the initial positions matches the corresponding target position; when the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, control the position adjustment device to adjust the position of the any one of the initial positions according to the corresponding target position to obtain the sample to be acquired after position adjustment; and control the image acquisition device to acquire an image of the sample to be acquired after position adjustment; the position adjustment device 820 is connected to the controller and is configured to adjust the position of any one of the initial positions under the control of the controller; the image acquisition device 830 is connected to the controller and is configured to, when the any one of the initial positions matches the corresponding target position, acquire an image of the sample to be acquired after position adjustment under the control of the controller.

[0090] Among them, it should be noted that the controller can establish a communication connection with the operation terminal through the Bluetooth module. The controller receives the control instructions of the operation terminal through the Bluetooth module and controls the vertical adjustment controller and the horizontal adjustment controller to remotely adjust the position of the core sample according to the instructions of the operation terminal.

[0091] In addition, it should also be noted that the controller can also be connected to the sample stage. The position adjustment device can be placed on the sample stage. The controller can also control the sample stage to rotate to obtain the initial position of the sample to be collected at at least one set angle and the target position at each set angle. Among them, as Figure 9 shown, three bolt grooves ( Figure 9 left side) can be set at the center of the sample stage, and the fixed base of the position adjustment device can be fixed on the sample stage of the CT scanning system through bolts ( Figure 9 right side).

[0092] As a possible implementation manner of the embodiment of the present disclosure, as Figure 10 shown, the position adjustment device includes a fixed base 1010 and a position adjustment structure 1020. The position adjustment structure 1020 is provided with a vertical adjustment controller 1021, a three-stage axial telescopic tube 1022, a horizontal adjustment controller 1023, a horizontal adjustment table 1024, and a sample fixing table 1025 from bottom to top.

[0093] Among them, the fixed base 1010 is connected to the bottom of the position adjustment structure 1020 and is used to fix the position adjustment structure; the vertical adjustment controller is connected to the three-stage axial telescopic tube and is used to control the telescopic length of the three-stage axial telescopic tube to adjust the position of the sample to be collected in the vertical direction.

[0094] Among them, the vertical adjustment controller (axial adjustment control motor) is located at the upper part of the fixed base and controls the telescopic length of the three-stage axial telescopic tube through a circuit to adjust the height of the sample stage in the axial direction. The three-stage axial telescopic tube is made of carbon steel and has the advantages of corrosion resistance, wear resistance, and high strength. Among them, Figure 11 the fully contracted state of the left part of the three-stage axial telescopic tube, Figure 11 the right part is the fully extended state of the three-stage axial telescopic tube. According to the telescopic state of the three-stage axial telescopic tube, it can be obtained that the axial adjustable range of the three-stage axial telescopic tube is large enough.

[0095] The horizontal adjustment controller 1023 is connected to the horizontal adjustment table 1024 and is used to control the horizontal adjustment table to adjust the position of the sample to be collected in the horizontal direction. It should be noted that a horizontal (lateral) adjustment controller is installed at the top of the three-stage axial telescopic tube, and the horizontal adjustment table is controlled to move in the front, rear, left, and right four directions in the lateral direction through a circuit to adjust the displacement of the sample stage in the horizontal plane;

[0096] The sample fixing stage 1025 is used to fix the sample to be collected. It should be noted that, as Figure 12 shown, the sample fixing stage can be set in two types, namely, a square sample fixing stage ( Figure 11 left part) and a circular sample fixing stage ( Figure 12 right part). The sample fixing stages of the two specifications can meet the test requirements of conventional core scanning. Adjustable movable bolts are installed around the sample fixing stage, and the tightness of the movable bolts can be adjusted according to the size of the core sample, so as to fix the core sample and ensure that the sample will not shake during the scanning process and affect the scanning effect.

[0097] In addition, the material of the sample fixing stage can be low-density and high-ray-penetrating materials such as high molecular resin or plastic, which can conveniently separate the core sample in the scanned image (the density of the core sample is relatively large, and the contrast with the resin or plastic material is very significant). Avoid using a sample fixing stage made of metal, because metal itself has high attenuation characteristics, which will cause X-ray hardening and generate metal artifacts, affecting the scanning effect of the core sample.

[0098] As a possible implementation manner of the embodiment of the present disclosure, the position adjusting device further includes: a power supply module.

[0099] Among them, the power supply module is connected to the vertical adjustment controller and is used to supply electrical energy to the vertical adjustment controller; the power supply module is connected to the horizontal adjustment controller and is used to supply electrical energy to the horizontal adjustment controller.

[0100] As an example, the power supply module can be installed inside the position adjusting device and can be powered through the power supply line of the CT scanning system to provide a stable working power supply for the vertical adjustment controller and the horizontal adjustment controller.

[0101] Corresponding to the image acquisition method provided in the above Figures 1 to 7 embodiment, the present disclosure also provides an image acquisition device. Since the image acquisition device provided in the embodiment of the present disclosure corresponds to the image acquisition method provided in the above Figures 1 to 7 embodiment, the implementation manner of the image acquisition method is also applicable to the image acquisition device provided in the embodiment of the present disclosure and will not be described in detail in the embodiment of the present disclosure.

[0102] Figure 13 FIG. is a schematic structural diagram of an image acquisition device according to an embodiment of the present disclosure. As Figure 13 shown, the image acquisition device 1300 includes: an acquisition module 1310, a judgment module 1320, a processing module 1330, and an acquisition module 1340.

[0103] Among them, an acquisition module 1310 is configured to acquire the initial positions and target positions at each set angle among at least one set angle where the sample to be collected is located; a judgment module 1320 is configured to, for any one of the initial positions among the initial positions at each set angle, judge whether any one of the initial positions matches the corresponding target position; a processing module 1330 is configured to, when any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, control a position adjustment device to perform position adjustment on any one of the initial positions according to the corresponding target position to obtain the sample to be collected after position adjustment; an acquisition module is configured to control an image acquirer to perform image acquisition on the sample to be collected after position adjustment.

[0104] As a possible implementation manner of an embodiment of the present disclosure, the judgment module 1320 is further configured to, for any one of the initial positions among the initial positions at each set angle, determine a reference line of the target position corresponding to any one of the initial positions; wherein, the reference line includes a horizontal reference line and a vertical reference line that are vertically intersecting; according to any one of the initial positions, determine at least one central axis of the sample to be collected; according to the at least one central axis, the horizontal reference line and the vertical reference line, determine whether any one of the initial positions matches the corresponding target position.

[0105] As a possible implementation manner of an embodiment of the present disclosure, the judgment module 1320 is further configured to judge whether the vertical central axis matches the vertical reference line; determine the reference coordinate range corresponding to the horizontal reference line; judge whether the coordinate ranges corresponding to each horizontal axis among at least one horizontal central axis are within the reference coordinate range; when the vertical central axis matches the vertical reference line and the coordinate ranges corresponding to each horizontal central axis are all within the reference coordinate range, determine that any one of the initial positions matches the corresponding target position.

[0106] As a possible implementation manner of an embodiment of the present disclosure, the processing module 1330 is further configured to determine the central coordinate point corresponding to any one of the initial positions; obtain the coordinate difference between the central coordinate point and the central coordinate point corresponding to the corresponding target position; according to the coordinate difference, control the position adjustment device to perform position adjustment on any one of the initial positions to obtain the sample to be collected after position adjustment.

[0107] As a possible implementation manner of an embodiment of the present disclosure, the processing module 1330 is further configured to, according to any one of the initial positions, determine at least one reference positioning line of the sample to be collected, wherein the at least one reference positioning line includes a reference horizontal central axis and a reference vertical central axis of the sample to be collected at any one of the initial positions; according to the reference horizontal central axis and the reference vertical central axis, determine the central coordinate point of the sample to be collected at any one of the initial positions.

[0108] The image acquisition device according to an embodiment of the present disclosure obtains the initial positions and target positions at each set angle among at least one set angle where the sample to be acquired is located; for any one of the initial positions at each set angle, it determines whether the any one of the initial positions matches the corresponding target position; when the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, according to the corresponding target position, it controls the position adjustment device to adjust the position of the any one of the initial positions to obtain the sample to be acquired after position adjustment; it controls the image acquirer to acquire an image of the sample to be acquired after position adjustment. Thus, by automatically controlling the position adjustment device to adjust the position of any one of the initial positions, manual adjustment is not required, the accuracy of position adjustment is improved, and further, the sample to be acquired can be made to be in the best scanning position at the center of the scanning field of view, maximizing the scanning quality.

[0109] To implement the above embodiment, the present disclosure also proposes a non - transitory computer - readable storage medium, on which a computer program is stored. When the program is executed by a processor, it implements the image acquisition method as described in the foregoing embodiment.

[0110] To implement the above embodiment, the present disclosure also proposes a computer program product, on which a computer program is stored. When the computer program is executed by a processor, it implements the image acquisition method as described in the foregoing embodiment.

[0111] Figure 14 It is a structural block diagram of a controller according to an embodiment of the present disclosure. Figure 14 The controller shown is only an example and should not bring any limitation to the functions and usage scope of the embodiments of the present disclosure.

[0112] As Figure 14 shown, the controller 1400 includes a processor 1401, which can perform various appropriate actions and processes according to the program stored in a read - only memory (ROM, Read Only Memory) 1402 or the program loaded from a memory 1406 into a random - access memory (RAM, Random Access Memory) 1403. In the RAM 1403, various programs and data required for the operation of the controller 1400 are also stored. The processor 1401, the ROM 1402, and the RAM 1403 are connected to each other through a bus 1404. An input / output (I / O, Input / Output) interface 1405 is also connected to the bus 1404.

[0113] The following components are connected to the I / O interface 1405: a memory 1406 including a hard disk, etc.; and a communication section 1407 including network interface cards such as LAN (Local Area Network) cards, modems, etc., and the communication section 1407 performs communication processing via a network such as the Internet; a drive 1408 is also connected to the I / O interface 1405 as needed.

[0114] Specifically, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program carried on a computer-readable medium, and the computer program includes program codes for performing the methods shown in the flowcharts. In such an embodiment, the computer program can be downloaded and installed from the network through the communication section 1407. When the computer program is executed by the processor 1401, the above functions defined in the method of the present disclosure are executed.

[0115] In an exemplary embodiment, a storage medium including instructions is also provided, such as a memory 1406 including instructions, and the above instructions can be executed by the processor 1401 of the controller 1400 to complete the above method. Optionally, the storage medium can be a non-transitory computer-readable storage medium. For example, the non-transitory computer-readable storage medium can be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage devices, etc.

[0116] In the description of this specification, the descriptions with reference to terms such as "an embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0117] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0118] Any process or method description represented in a flowchart or otherwise described herein can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a customized logic function or process, and the scope of the preferred embodiments of the present disclosure includes additional implementations in which functions may be executed not in the order shown or discussed, including in a substantially simultaneous manner according to the functions involved or in a reverse order, which should be understood by those skilled in the art to which the embodiments of the present disclosure pertain.

[0119] The logic and / or steps represented in a flowchart or otherwise described herein, for example, can be considered a sequenced list of executable instructions for implementing a logical function and can be embodied specifically in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, a system including a processor, or other systems that can fetch and execute instructions from the instruction execution system, apparatus, or device. As used in this specification, a "computer-readable medium" can be any device that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium include the following: an electrical connection having one or more wires (electronic device), a portable computer diskette (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium can even be paper or other suitable medium on which the program can be printed, as the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpretation, or otherwise appropriate processing if necessary, and then stored in a computer memory.

[0120] It should be understood that the various parts of the present disclosure can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one of the following techniques known in the art or a combination thereof can be used: discrete logic circuits having logic gate circuits for implementing logical functions on data signals, application specific integrated circuits having appropriate combinational logic gate circuits, programmable gate arrays (PGAs), field programmable gate arrays (FPGAs), etc.

[0121] Those of ordinary skill in the art can understand that all or part of the steps carried out in implementing the above-described embodiment methods can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. When the program is executed, it includes one or a combination of the steps of the method embodiment.

[0122] In addition, in each of the various embodiments of the present disclosure, the functional units can be integrated in a processing module, or each unit can exist physically alone, or two or more units can be integrated in one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. When the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0123] The above-mentioned storage medium can be a read-only memory, a magnetic disk, an optical disc, etc. Although the embodiments of the present disclosure have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present disclosure.

Claims

1. An image acquisition method, characterized in that, Including: Obtain the initial positions at each of at least one set angle where the sample to be collected is located and the target positions at each of the set angles, where the target position is the optimal position of the scanning field of view of the sample stage at each set angle; For any one of the initial positions at each of the set angles, determine the reference line of the target position corresponding to the any one of the initial positions; where the reference line includes a horizontally intersecting horizontal reference line and a vertical reference line; according to the any one of the initial positions, determine at least one central axis of the sample to be collected; according to the at least one central axis, the horizontal reference line and the vertical reference line, determine whether the any one of the initial positions matches the corresponding target position; The at least one central axis includes a vertical central axis and at least one horizontal central axis, and determining whether the any one of the initial positions matches the corresponding target position according to the at least one central axis, the horizontal reference line and the vertical reference line includes: judging whether the vertical central axis matches the vertical reference line; determining the reference coordinate range corresponding to the horizontal reference line; judging whether the coordinate ranges corresponding to each horizontal axis in the at least one horizontal central axis are within the reference coordinate range; when the vertical central axis matches the vertical reference line and the coordinate ranges corresponding to each horizontal central axis are all within the reference coordinate range, determine that the any one of the initial positions matches the corresponding target position; When the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, determine the central coordinate point corresponding to the any one of the initial positions; obtain the coordinate difference between the central coordinate point and the central coordinate point corresponding to the corresponding target position; according to the coordinate difference, control the position adjustment device to adjust the position of the any one of the initial positions to obtain the sample to be collected after position adjustment; Determining the central coordinate point corresponding to the any one of the initial positions includes: according to the any one of the initial positions, determining at least one reference positioning line of the sample to be collected, where the at least one reference positioning line includes the reference horizontal central axis and the reference vertical central axis of the sample to be collected at the any one of the initial positions; according to the reference horizontal central axis and the reference vertical central axis, determine the central coordinate point of the sample to be collected at the any one of the initial positions; Control the image collector to collect an image of the sample to be collected after position adjustment.

2. A controller, characterized in that, Including: At least one processor; And A memory communicatively connected to the at least one processor; where The memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processor can execute the method according to claim 1.

3. An image acquisition system, characterized in that, Including: The controller, the position adjustment device and the image collector as described in claim 2; The controller is configured to obtain the initial positions and the target positions at each of at least one set angle where the sample to be collected is located; for any one of the initial positions at each of the set angles, determine whether the any one of the initial positions matches the corresponding target position; when the any one of the initial positions does not match the corresponding target position, in response to an adjustment instruction, control a position adjustment device to adjust the position of the any one of the initial positions according to the corresponding target position to obtain the sample to be collected after position adjustment; and control an image collector to collect an image of the sample to be collected after position adjustment. The position adjustment device is connected to the controller and is configured to adjust the position of the any one of the initial positions under the control of the controller. The position adjustment device includes a fixed base and a position adjustment structure. The position adjustment structure is provided with a vertical adjustment controller, a three-stage axial telescopic tube, a horizontal adjustment controller, a horizontal adjustment table, and a sample fixing table from bottom to top. The fixed base is connected to the bottom of the position adjustment structure and is configured to fix the position adjustment structure. The vertical adjustment controller is connected to the three-stage axial telescopic tube and is configured to control the telescopic length of the three-stage axial telescopic tube by using a circuit to adjust the position of the sample to be collected in the vertical direction. The horizontal adjustment controller is connected to the horizontal adjustment table and is configured to control the horizontal adjustment table to adjust the position of the sample to be collected in the horizontal direction. The sample fixing table is configured to fix the sample to be collected. The position adjustment device further includes a power supply module. The power supply module is connected to the vertical adjustment controller and is configured to supply electrical energy to the vertical adjustment controller. The power supply module is connected to the horizontal adjustment controller and is configured to supply electrical energy to the horizontal adjustment controller. The image collector is connected to the controller and is configured to collect an image of the sample to be collected after position adjustment under the control of the controller when the any one of the initial positions matches the corresponding target position.

4. An image acquisition device, characterized in that, It includes: An acquisition module, configured to acquire the initial positions and the target positions at each of at least one set angle where the sample to be collected is located, where the target position is the optimal position of the scanning field of view of the sample stage at each set angle. A judgment module, configured to, for any one of the initial positions at each of the set angles, determine a reference line of the target position corresponding to the any one of the initial positions. The reference line includes a horizontal reference line and a vertical reference line that intersect vertically. According to the any one of the initial positions, determine at least one central axis of the sample to be collected. According to the at least one central axis, the horizontal reference line, and the vertical reference line, determine whether the any one of the initial positions matches the corresponding target position. The at least one central axis includes a vertical central axis and at least one horizontal central axis. Determining whether the any initial position matches the corresponding target position according to the at least one central axis, the horizontal reference line and the vertical reference line includes: determining whether the vertical central axis matches the vertical reference line; determining the reference coordinate range corresponding to the horizontal reference line; determining whether the coordinate ranges corresponding to the respective horizontal axes in the at least one horizontal central axis are within the reference coordinate range; and determining that the any initial position matches the corresponding target position when the vertical central axis matches the vertical reference line and the coordinate ranges corresponding to the respective horizontal central axes are all within the reference coordinate range. The processing module is configured to, when the any initial position does not match the corresponding target position, in response to an adjustment instruction, determine the central coordinate point corresponding to the any initial position; obtain the coordinate difference between the central coordinate point and the central coordinate point corresponding to the corresponding target position; and control the position adjustment device to perform position adjustment on the any initial position according to the coordinate difference, so as to obtain the sample to be collected after position adjustment. Determining the central coordinate point corresponding to the any initial position includes: determining at least one reference positioning line of the sample to be collected according to the any initial position, where the at least one reference positioning line includes a reference horizontal central axis and a reference vertical central axis of the sample to be collected at the any initial position; and determining the central coordinate point of the sample to be collected at the any initial position according to the reference horizontal central axis and the reference vertical central axis. The acquisition module is configured to control the image acquisition device to perform image acquisition on the sample to be collected after position adjustment.

Images