Image correction method for flying spot imaging device

Abstract

The present invention discloses an image correction method for a flying spot imaging device, which relates to the field of safety detection and is used to improve the imaging quality of a flying spot imaging device. The method comprises the following steps: calculating a correction parameter according to a first amplitude of a flywheel of the flying spot imaging device; judging whether the correction parameter is greater than a first preset parameter; if the correction parameter is greater than the first preset parameter, correcting the image scanned by the flying spot imaging device. The above technical solution can correct the image scanned by the flying spot imaging device to ensure the imaging quality.

Description

Technical Field

[0001] The invention relates to the field of safety detection, and in particular to an image correction method for a flying spot imaging device. Background Art

[0002] The inspection of goods / vehicles carrying contraband (such as drugs, explosives, etc.) is an important task in the security field. At present, the most effective and popular security inspection technology for goods / vehicles is X-ray imaging technology. From the technical principle, X-ray imaging technology is divided into the following three categories: transmission type, backscatter type and transmission-backscatter combination.

[0003] High-energy X-rays have strong penetrating power, and the perspective imaging technology of high-energy X-rays has a good inspection effect on heavy goods. However, high-energy X-rays are not effective in detecting prohibited items such as drugs and explosives with low atomic numbers and low material density.

[0004] X-ray backscatter imaging technology detects materials based on the detection of Compton backscatter signals. Compared with metal materials, contraband with low atomic number and low density (such as drugs, explosives, etc.) has a higher Compton scattering cross section and can produce stronger scattering signals. Therefore, X-ray backscatter technology is particularly suitable for detecting contraband such as drugs and explosives, and has become a widely used contraband detection technology in the security inspection field.

[0005] X-ray backscattering technology uses point X-rays to hit an object and uses a large area detector to collect scattered signals to form an image. From the perspective of the imaging principle of X-ray backscattering technology, obtaining stable and reliable point X-rays is one of the key technologies for backscattering imaging. Ways to obtain point X-rays include: flywheel device, chopper wheel structure and drum structure. Among them, the flywheel device has the characteristics of simple structure, small size and light weight, and is the most commonly used mechanical structure for backscattering technology.

[0006] The inventors have found that the prior art has at least the following problems: the stability and reliability of the flywheel operation directly affect the image quality and reliability of the backscatter imaging system. Due to the high speed and large inertia of the flywheel, vibration and impact are inevitably caused during operation, and the imaging quality of the flying spot scanning device needs to be improved. Summary of the invention

[0007] The invention provides an image correction method for a flying spot imaging device, which is used to improve the imaging quality of the flying spot scanning device.

[0008] An embodiment of the present invention provides an image correction method for a flying spot imaging device, comprising the following steps:

[0009] calculating a correction parameter according to a first amplitude of a flywheel of a flying spot imaging device;

[0010] Determining whether the correction parameter is greater than a first preset parameter;

[0011] If the correction parameter is greater than the first preset parameter, the image scanned by the flying spot imaging device is corrected.

[0012] In some embodiments, the flying spot imaging device image correction method further comprises the following steps:

[0013] If the correction parameter is less than or equal to the first preset parameter, no correction is performed on the image scanned by the flying spot imaging device.

[0014] In some embodiments, the flying spot imaging device image correction method further comprises the following steps:

[0015] On the premise that the correction parameter is greater than the first preset parameter, before correcting the image scanned by the flying spot imaging device, determining whether the correction parameter is greater than a second preset parameter; wherein the second preset parameter is greater than the first preset parameter;

[0016] If the correction parameter is greater than a second preset parameter, the flying spot imaging device is shut down.

[0017] In some embodiments, before the step of calculating the correction parameter according to the first amplitude of the flywheel of the flying spot imaging device, the flying spot imaging device image correction method further includes the following steps:

[0018] judging whether dynamic balance adjustment is required according to a first amplitude of the flywheel of the flying spot imaging device;

[0019] If the first amplitude is greater than or equal to the preset second amplitude, the flywheel is dynamically balanced until the measured third amplitude of the adjusted flywheel is less than the preset second amplitude, and the third amplitude of the flywheel at this time is used as the first amplitude of the flywheel.

[0020] In some embodiments, the flywheel is dynamically balanced by the following steps:

[0021] Starting the flying spot imaging device at a set rotation speed to measure the first amplitude of the flywheel;

[0022] Adding a counterweight at a set position on the edge of the flywheel;

[0023] Starting the flywheel with the counterweight at the set speed, and measuring a fourth amplitude of the flywheel;

[0024] Calculating a compensation amount of the flywheel weight that needs to be changed according to the first amplitude, the fourth amplitude, and the weight of the counterweight;

[0025] stopping the flywheel with the counterweight;

[0026] The weight of the counterweight is reduced according to the compensation amount in the same direction as the vector direction of the set position, or the weight of the counterweight is increased according to the compensation amount in the opposite direction to the vector direction corresponding to the set position.

[0027] In some embodiments, the compensation amount is calculated using the following formula:

[0028] G2=A*G1 / (BA);

[0029] Among them, G2 is the compensation amount, G1 is the weight of the counterweight, A is the first amplitude, and B is the fourth amplitude.

[0030] In some embodiments, dynamically balancing the flywheel further comprises the following steps:

[0031] measuring again the fifth amplitude of the flywheel after adjusting the weight;

[0032] Determining whether the fifth amplitude is greater than or equal to the preset second amplitude;

[0033] If the fifth amplitude is greater than or equal to the preset second amplitude, repeat the above-mentioned dynamic balancing adjustment steps until the measured fifth amplitude of the flywheel is less than the preset second amplitude, and use the fifth amplitude at this time as the third amplitude of the flywheel after adjustment.

[0034] The image correction method of the flying spot imaging device provided by the above technical solution calculates the correction parameter according to the first amplitude of the flywheel of the flying spot imaging device; the correction parameter is a parameter used to determine whether to perform correction. Specifically, it is determined whether to correct the image according to the relationship between the correction parameter and the first preset parameter: if the correction parameter is greater than the first preset parameter, it means that the vibration of the flying spot imaging device during operation has affected the image quality, and the image scanned by the flying spot imaging device is corrected. The image correction method of the flying spot imaging device provided by the above technical solution can correct the image captured by the flying spot imaging device, thereby improving the image quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0036] Figure 1 A schematic diagram of an image correction method for a flying spot imaging device provided by an embodiment of the present invention.

[0037] Figure 2A schematic diagram of a method for a flying spot imaging device provided in an embodiment of the present invention to determine whether a flywheel needs to be dynamically balanced.

[0038] Figure 3 A schematic diagram of a method for dynamically balancing a flywheel using a flying spot imaging device provided in an embodiment of the present invention.

[0039] Figure 4 A schematic structural diagram of some components of a flying spot imaging device provided by an embodiment of the present invention.

[0040] Figure 5 A schematic diagram of the flywheel vibration of the flying spot scanning device provided in an embodiment of the present invention.

[0041] Figure 6 A vector direction schematic diagram of a dynamic balance adjustment method for a flying spot scanning device provided in an embodiment of the present invention.

[0042] Figure 7 A schematic diagram of the correction effect of the image correction method of the flying spot imaging device provided by an embodiment of the present invention. Reference numerals

[0043] 1. Base; 2. Driving mechanism; 3. Transmission mechanism; 4. Flywheel; 5. Detection mechanism;

[0044] 22. Motor;

[0045] 31. Bearing seat; 32. Bearing; 33. Transmission shaft;

[0046] 51. Vibration detection component; 52. Distance detection element; 53. Temperature detection component. DETAILED DESCRIPTION

[0047] Combine the following Figure 1 to Figure 7 The technical solution provided by the present invention is described in more detail. The description of the exemplary embodiments is merely illustrative and is by no means intended to limit the present disclosure and its application or use. The present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present disclosure thorough and complete and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the components and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as being merely exemplary and not limiting.

[0048] The words "first", "second" and similar words used in this disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. The words "include" or "comprise" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of also including other elements.

[0049] In the present disclosure, when a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When a specific device is described as being connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0050] All terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as those understood by ordinary technicians in the field to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0051] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment are considered part of the specification.

[0052] The dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. In the drawings, the same reference numerals are attached to common structural elements or structural elements of the same type, and their repeated descriptions are appropriately omitted.

[0053] The inventors have found through research that due to the movement characteristics of the flying spot scanning device itself, vibration is inevitable during operation. When the vibration exceeds a certain level, it will seriously affect the imaging quality. Therefore, it is necessary to correct the image scanned by the flying spot imaging device when necessary to improve the imaging quality.

[0054] Before introducing the image correction method of the flying spot imaging device provided by the embodiment of the present invention, the structure of the flying spot imaging device is first introduced. Figure 4 A schematic diagram of the structure of some components of a flying spot imaging device provided by an embodiment of the present invention, Figure 5 A schematic diagram of the flywheel vibration of the flying spot scanning device provided in an embodiment of the present invention.

[0055] See also Figure 4 and Figure 5 The flying spot imaging device includes a flying spot scanning device and a detector. The detector is arranged between the flying spot scanning device and the object to be detected, and the detector is used to receive the X-ray reflected by the object to be detected.

[0056] The flying spot scanning device includes a base 1, a driving mechanism 2, a transmission mechanism 3, a flywheel 4, a detection mechanism 5 and a control component (not shown). The base 1 is configured to provide support. The driving mechanism 2 is mounted on the base 1 and supported by the base 1. The transmission mechanism 3 is mounted on the base 1 and supported by the base 1; the transmission mechanism 3 is drivingly connected to the driving mechanism 2 to rotate under the drive of the driving mechanism 2. The flywheel 4 is drivingly connected to the transmission mechanism 3 to rotate with the rotation of the transmission mechanism 3. The detection mechanism 5 includes a vibration detection component 51; the vibration detection component 51 is mounted on the transmission mechanism 3 to detect the amplitude of the transmission mechanism 3. The control component is electrically connected to the detection mechanism 5, and the control component is configured to determine whether the vibration of the flywheel 4 during the movement meets the requirements according to the amplitude detected by the vibration detection component 51. If the first amplitude of the flywheel 4 during the rotation process is greater than or equal to the preset second amplitude, the vibration of the flywheel 4 during the movement does not meet the requirements; if the first amplitude is less than the preset second amplitude, the vibration of the flywheel 4 during the movement meets the requirements. The second amplitude is a value preset in advance according to the actual application scenario of the flying spot scanning device.

[0057] The operation process of the flying spot scanning device is as follows: when the driving mechanism 2 of the flying spot scanning device is started, the driving mechanism 2 starts according to the preset mode. The rotation of the driving mechanism 2 is transmitted to the flywheel 4 through the transmission mechanism 3 to realize the kinetic energy transmission. The flywheel 4 rotates at a high speed under the drive of the driving mechanism 2. The high-speed rotating flywheel 4 enables the X-ray beam to scan the target at a higher frequency. The flying spot scanning device can identify the internal structure, surface defects and internal objects of the object to be inspected through rapid scanning and imaging.

[0058] See also Figure 4 In some embodiments, the transmission mechanism 3 includes a bearing seat 31, a bearing 32 and a transmission shaft 33. The bearing seat 31 is installed on the base 1; the bearing seat 31 is located between the flywheel 4 and the motor seat 21. The bearing 32 is installed on the bearing seat 31. The transmission shaft 33 is supported by the bearing 32; one end of the transmission shaft 33 is connected to the motor 22 for driving, and the other end of the transmission shaft 33 is connected to the flywheel 4. The transmission mechanism 3 may also include a gearbox, a clutch, etc., for achieving smooth power transmission and speed regulation. Gear transmission has high efficiency and is suitable for high torque occasions. In addition, the gear transmission can withstand the dynamic load of the flywheel 4 during operation, enhance the reliability of the transmission system, and will not affect the imaging results due to deformation during movement. The rotation of the motor 22 will drive the transmission shaft 33 to rotate synchronously, and the transmission shaft 33 will drive the flywheel 4 to rotate. A coupling 34 is provided between the output shaft of the motor 22 and the transmission shaft 33 to achieve the connection between the two shafts.

[0059] Continue to see Figure 4, the detection mechanism 5 may also include a distance detection element 52. The distance detection element 52 may be selected from one of the following: a laser rangefinder, an ultrasonic rangefinder, and a photoelectric rangefinder, etc. The distance detection element 52 is installed near the flywheel 4, and the distance detection element 52 is configured to detect the radial offset of the flywheel 4 in a stationary state. The control component is electrically connected to the distance detection element 52, and the control component is also configured to calculate whether the position of the flywheel 4 in a stationary state meets the requirements based on the radial offset of the flywheel 4 in a stationary state detected by the distance detection element 52. If the position of the flywheel 4 in a stationary state deviates too much from the preset position (for example, the position required for installation), the state of the flywheel 4 during operation may vibrate too much. The distance detection element 52 can be used to identify whether the installation position of the flywheel 4 or the position after stopping after running for a period of time meets the installation requirements.

[0060] The vibration detection component 51 and the distance detection element 52 can be used in conjunction with each other: the vibration detection component 51 is used to measure the real-time amplitude of the flywheel 4 during rotation, and the distance detection element 52 is used to measure the radial offset of the flywheel 4 in a static state. The vibration detection component 51 and the distance detection element 52 are both electrically connected to the control component. The control component determines the vibration conditions of the flywheel 4 in a static state and during operation according to the detection signals of the distance detection element 52 and the vibration detection component 51.

[0061] Continue to see Figure 4 In some embodiments, the detection mechanism 5 may further include a temperature detection component 53 , which is installed on the transmission mechanism 3 and / or the drive mechanism 2 to detect the temperature of the transmission mechanism 3 and / or the drive mechanism 2 .

[0062] Continue to see Figure 4 In some embodiments, there are multiple temperature detection components 53, at least one temperature detection component 53 is installed on the outer shell of the motor base 21, and can directly detect the temperature of the outer shell of the motor base 21. At least one temperature detection component 53 is installed on the bearing seat 31, and can directly detect the temperature of the bearing seat 31.

[0063] If the temperature value detected by any temperature detection component 53 exceeds the required temperature value, it means that the temperature of the flying spot scanning device is too high. When the temperature is too high, the flying spot scanning device can send a first alarm signal or shut down. The first alarm signal can be a sound signal, a light signal, etc.

[0064] Figure 1 A schematic diagram of an image correction method for a flying spot imaging device provided by an embodiment of the present invention.

[0065] See also Figure 1 The embodiment of the present invention provides an image correction method for a flying spot imaging device, comprising the following steps:

[0066] Step S100, calculating a correction parameter according to a first amplitude of a flywheel of a flying spot imaging device.

[0067] Calibration parameters For example, it is the ratio of the first amplitude s to the height h of a single pixel point imaged by the flying spot imaging device, that is, The imaging accuracy of the flying spot imaging device is determined according to the requirements of the actual application scenario. After the imaging accuracy of the flying spot imaging device is determined, the height of a single pixel is also determined.

[0068] Step S200, determining whether the correction parameter is greater than a first preset parameter. The first preset parameter is a value set in advance according to imaging accuracy requirements, and the first preset parameter is, for example, 1-5.

[0069] Step S300, if the correction parameter is greater than the first preset parameter, the image scanned by the flying spot imaging device is corrected. If the correction parameter is greater than the first preset parameter, it means that the first amplitude of the flywheel is relatively large, and the influence of the first amplitude of the flywheel on the imaging quality cannot be ignored, so it is necessary to correct the image scanned by the flying spot imaging device. When correcting, the image is corrected according to the rounding function. Round down, that is ,according to The image is corrected by the value of .

[0070] In some embodiments, the flying spot imaging device image correction method further comprises the following step S400: if the correction parameter is less than or equal to the first preset parameter, then the image scanned by the flying spot imaging device is not corrected. If the correction parameter is less than or equal to the first preset parameter, it means that the first amplitude of the flywheel is relatively small, and the influence of the first amplitude of the flywheel on the imaging quality can be ignored, so there is no need to correct the image scanned by the flying spot imaging device.

[0071] Figure 7 The comparison diagram of the correction effect of the image correction method of the flying spot imaging device provided by the embodiment of the present invention is illustrated. The object to be detected is as shown in (a). Normally, the thicker the object to be detected is, the darker the color of the corresponding area of ​​the scanned image is. However, due to the vibration of the flywheel 4, an image as shown in (c) is obtained, which cannot reflect the actual situation of the object to be detected. However, after correcting the image as shown in (c), for example, by moving the data collected by the vibration and being misaligned downward by one pixel, an image as shown in (b) corresponding to the actual situation can be obtained.

[0072] In some embodiments, before step S300 and after step S200, the flying spot imaging device image correction method further includes the following step S500.

[0073] In step S500, under the premise that the correction parameter is greater than the first preset parameter, before correcting the image scanned by the flying spot imaging device, it is determined whether the correction parameter is greater than a second preset parameter; wherein the second preset parameter is greater than the first preset parameter. The value of the second preset parameter is, for example, 3 to 5 times the value of the first preset parameter.

[0074] If the calibration parameter is less than or equal to the second preset parameter, step S300 is executed. Figure 1 If the correction parameter is greater than the second preset parameter, step S600 is executed.

[0075] Step S600, if the correction parameter is greater than the second preset parameter, the flying spot imaging device is shut down. When the correction parameter exceeds the second preset parameter, it means that the vibration of the flywheel 4 of the flying spot imaging device is large, the image quality obtained by scanning is relatively poor, and it is difficult to correct. At this time, the flying spot imaging device is shut down for maintenance, and scanning imaging is performed again after the maintenance of the flying spot imaging device is completed. The first preset parameter and the second preset parameter are both values ​​that characterize the degree of influence of the amplitude on the imaging accuracy.

[0076] Figure 2 A schematic diagram of a method for dynamically balancing a flywheel using a flying spot imaging device provided in an embodiment of the present invention. Figure 3 Schematic diagram of the method for balancing the flywheel.

[0077] See also Figure 2 In some embodiments, before the step S100 of calculating the correction parameter according to the first amplitude of the flywheel 4 of the flying spot imaging device, the flying spot imaging device image correction method further includes the following steps:

[0078] Step S700, judging whether dynamic balance adjustment is required according to the first amplitude and the preset second amplitude of the flywheel of the flying spot imaging device. Dynamic balance adjustment herein refers to reducing or eliminating vibration by adjusting the mass distribution of the flywheel 4 so that the flywheel 4 remains stable during movement.

[0079] Step S800: If the first amplitude is greater than or equal to the preset second amplitude, the flywheel is dynamically balanced until the measured third amplitude of the adjusted flywheel is less than the preset second amplitude, and the third amplitude of the flywheel at this time is used as the first amplitude of the flywheel.

[0080] If the first amplitude is greater than or equal to the preset second amplitude, it means that the vibration of the flywheel 4 is too large, and the image scanned by the flying spot scanning device may have a large deviation from the actual image, and it is no longer possible to pass Figure 1 and Figure 7 The method shown corrects the image scanned by the flying spot imaging device, so the flywheel 4 needs to be dynamically balanced first.

[0081] If the first amplitude is smaller than the preset second amplitude, it means that the vibration of the flywheel 4 is small, and in this case, there is no need to perform dynamic balancing adjustment on the flywheel 4 .

[0082] See also Figure 3 In some embodiments, the following steps are used to dynamically balance the flywheel:

[0083] Step S801, starting the flying spot imaging device at a set rotation speed to measure the first amplitude A of the flywheel.

[0084] In the above step S801, the control component can obtain the first amplitude of the flywheel 4 according to the detection parameters of the vibration detection component 51. The vibration detection component 51 can directly detect the amplitude of the flywheel 4. The amplitude of the flywheel 4 before dynamic balancing is the first amplitude. The set speed is a parameter set in advance and is set according to the actual scene of the flying spot scanning device.

[0085] Step S802, adding a counterweight at a set position on the edge of the flywheel 4. The weight of the counterweight is G1. The set position can be any position on the edge of the flywheel 4, for example, it can be the edge of the flywheel 4, and the counterweight is fixedly connected to the flywheel 4. After adding the counterweight, the counterweight and the flywheel 4 rotate synchronously. The weight distribution of the rotatable part of the flying spot scanning device changes, and the rotation characteristics of the flywheel 4 of the flying spot scanning device will also change accordingly. After the rotation characteristics of the flywheel 4 change, the amplitude of the flywheel 4 may increase, or the amplitude of the flywheel 4 may decrease, which does not affect the adjustment of step S803.

[0086] Step S803 , starting the flywheel 4 with a counterweight at a set rotation speed, and measuring a fourth amplitude B of the flywheel 4 .

[0087] Step S804, calculating the compensation amount G2 required to change the weight of the flywheel 4 according to the first amplitude A, the fourth amplitude B, and the weight G1 of the counterweight. Specifically, the compensation amount is calculated according to the following formula: G2=A*G1 / (BA).

[0088] Step S805, stop the flywheel 4 with the counterweight.

[0089] Step S806: Reduce the weight of the counterweight according to the compensation amount in the same direction as the vector direction of the set position, and the reduced weight is G2. Alternatively, increase the weight of the counterweight according to the compensation amount in the opposite direction of the vector direction corresponding to the set position, and the increased weight is G2. Figure 6 to be sure. Figure 6 The center vector A corresponds to the position of the center of gravity of the counterweight. The vector B corresponds to the intersection of the counterweight and the flywheel 4.

[0090] Back to Figure 3 After the dynamic balance adjustment is performed, in some embodiments, the dynamic balance adjustment of the flywheel further includes the following steps:

[0091] Step S807, measuring the fifth amplitude of the flywheel 4 after the weight is adjusted again.

[0092] Step S808: determining whether the fifth amplitude is greater than or equal to a preset second amplitude.

[0093] Step S809, if the fifth amplitude is greater than or equal to the preset second amplitude, repeat the above dynamic balancing adjustment steps until the measured fifth amplitude of the flywheel 4 is less than the preset second amplitude, and the fifth amplitude at this time is used as the third amplitude of the flywheel 4 after adjustment.

[0094] The above steps S807 to S809 are to cyclically detect the vibration of the flywheel 4 until the fifth amplitude of the flywheel 4 is less than the preset second amplitude, and the fifth amplitude is used as the third amplitude of the flywheel 4 after dynamic balance adjustment, thus obtaining the third amplitude in step S800. Then, the adjusted flying spot scanning device is used to detect and image the object to be detected, and the amplitude of the flywheel 4 during the movement is the third amplitude.

[0095] After the flying spot scanning device completes the dynamic balance adjustment, the dynamic unbalance amount of the flywheel 4 will not be completely 0 and cannot be eliminated, that is, during the operation, the flying spot scanning device will always have dynamic unbalance and centrifugal force, affecting the stable operation of the flywheel 4. However, this amount has little effect on the accuracy of imaging, and the image can be corrected in step S300 to improve the imaging quality.

[0096] An embodiment of the present invention provides a flying spot scanning device adjustment system, including a memory and a processor coupled to the memory, wherein the processor is configured to execute the flying spot scanning device dynamic balance adjustment method in any one of the aforementioned embodiments based on instructions stored in the memory.

[0097] The memory may include, for example, a system memory, a fixed non-volatile storage medium, etc. The system memory may store, for example, an operating system, an application program, a boot loader, and other programs.

[0098] Some embodiments of the present disclosure further provide a computer-readable storage medium on which a computer program is stored, wherein when the program is executed by a processor, the method for adjusting the dynamic balance of a flying spot scanning device in any of the above embodiments is implemented.

[0099] The processor described herein may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in an alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0100] Storage media can be any available media that can be accessed by a computer. As an example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, disk storage or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer. Any connection is also properly referred to as a computer-readable medium. For example, if the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwaves, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwaves are included in the definition of the medium. As used herein, disks and discs include compact discs (CDs), laser discs, optical discs, digital versatile discs (DVDs), floppy disks, and blue-ray discs, wherein disks often reproduce data magnetically, and discs reproduce data optically with lasers. The above combination should also be included in the scope of computer-readable media.

[0101] Those skilled in the art will appreciate that the method embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable non-transient storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0102] The present disclosure is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0103] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0104] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0105] In the description of the present invention, it is necessary to understand that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the protection content of the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0106] In the description of the present invention, each technical feature may be combined with other technical features where feasible.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein, but these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flying spot imaging device image correction method, characterized in that: The following steps are involved: Calculating a correction parameter according to a first amplitude of a flywheel (4) of a flying spot imaging device; Determining whether the correction parameter is greater than a first preset parameter; If the correction parameter is greater than the first preset parameter, the image scanned by the flying spot imaging device is corrected.

2. The image correction method of the flying spot imaging device according to claim 1, characterized in that: The following steps are also included: If the correction parameter is less than or equal to the first preset parameter, no correction is performed on the image scanned by the flying spot imaging device.

3. The image correction method of the flying spot imaging device according to claim 1, characterized in that: The following steps are also included: On the premise that the correction parameter is greater than the first preset parameter, before correcting the image scanned by the flying spot imaging device, determining whether the correction parameter is greater than a second preset parameter; wherein the second preset parameter is greater than the first preset parameter; If the correction parameter is greater than a second preset parameter, the flying spot imaging device is shut down.

4. The image correction method of the flying spot imaging device according to claim 1, characterized in that: Before the step of calculating the correction parameter according to the first amplitude of the flywheel (4) of the flying spot imaging device, the method further includes the following steps: Judging whether dynamic balance adjustment is required according to a first amplitude of a flywheel (4) of the flying spot imaging device; If the first amplitude is greater than or equal to the preset second amplitude, the flywheel (4) is dynamically balanced until the third amplitude of the flywheel (4) after adjustment is measured to be less than the preset second amplitude, and the third amplitude of the flywheel (4) at this time is used as the first amplitude of the flywheel (4).

5. The image correction method of the flying spot imaging device according to claim 4, characterized in that: The flywheel (4) is dynamically balanced by the following steps: Starting the flying spot imaging device at a set rotation speed to measure the first amplitude of the flywheel (4); adding a counterweight at a set position on the edge of the flywheel (4); Starting the flywheel (4) with the counterweight at the set rotation speed, and measuring a fourth amplitude of the flywheel (4); Calculating a compensation amount required to change the weight of the flywheel (4) according to the first amplitude, the fourth amplitude, and the weight of the counterweight; Stopping the flywheel (4) with the counterweight; The weight of the counterweight is reduced according to the compensation amount in the same direction as the vector direction of the set position, or the weight of the counterweight is increased according to the compensation amount in the opposite direction to the vector direction corresponding to the set position.

6. The image correction method of the flying spot imaging device according to claim 5, characterized in that: The compensation amount is calculated using the following formula: G2=A*G1 / (BA); Among them, G2 is the compensation amount, G1 is the weight of the counterweight, A is the first amplitude, and B is the fourth amplitude.

7. The image correction method of the flying spot imaging device according to claim 5, characterized in that: The dynamic balancing of the flywheel (4) further comprises the following steps: measuring again the fifth amplitude of the flywheel (4) after the weight is adjusted; Determining whether the fifth amplitude is greater than or equal to the preset second amplitude; If the fifth amplitude is greater than or equal to the preset second amplitude, the above-mentioned dynamic balancing adjustment steps are repeated until the measured fifth amplitude of the flywheel (4) is less than the preset second amplitude, and the fifth amplitude at this time is used as the third amplitude of the flywheel (4) after adjustment.

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