A laser direct writing image detection method, system and related device

Abstract

Embodiments of the present application provide a kind of laser direct writing image detection method, system and related equipment, through the detection of the offset of the light spot of different lasers in the same time in horizontal direction, the accurate positioning of image deformation area position on complete exposure range and the measurement of deformation amount are realized.The method comprises: setting multiple groups of non-repeating binary images in horizontal direction to form image sequence, and the position of laser exposure point is obtained by binary processing image sequence;In the process of synchronous scanning of multiple lasers in laser array, the mapping position of exposure point in photosensitive coating in image sequence is exposed by each laser under the control of synchronous switch command, to form latent image of image sequence in the scanning area of each laser respectively;If multiple developed image sequences are not aligned in horizontal direction from the same ordered target binary image, then the coordinate value of difference point of target binary image in each developed image sequence in horizontal direction is detected.

Description

Technical Field

[0001] This invention relates to the field of laser direct writing technology, and in particular to a laser direct writing image detection method, system and related equipment. Background Technology

[0002] Existing laser direct writing equipment (such as the laser direct plate making device for planar screen printing screen disclosed in the patent application No. 201310084860.3) often has a laser array composed of multiple lasers arranged in a linear shape, and a preset image is formed on the photosensitive coating based on the reciprocating scanning of the laser array.

[0003] The applicant discovered that, due to inherent errors in the mechanical hardware of the laser array or the influence of different motion parameters, the spot of some lasers in the laser array would shift to varying degrees in certain exposure areas in the laser scanning direction (horizontal direction), ultimately causing the latent image formed by the laser array scanning exposure to be deformed in the horizontal direction.

[0004] After the equipment is installed, how to determine the horizontal offset of each laser spot in the laser array at a certain moment (at a certain position) under fixed motion parameters becomes an urgent problem to be solved. Summary of the Invention

[0005] This invention provides a laser direct-write image detection method, system, and related equipment. By detecting the horizontal offset of the light spots of different lasers at the same time, it achieves precise positioning of the image deformation area and measurement of the deformation on the full exposure surface.

[0006] The first aspect of this invention provides a laser direct-write image detection method, which may include:

[0007] Multiple sets of non-repeating binary images are arranged horizontally to form an image sequence, and the image sequence is binarized to obtain the position of the laser exposure point;

[0008] During the synchronous scanning of multiple pixel rows on the photosensitive coating by multiple lasers in the laser array, a synchronous switching command controls each laser to expose the mapping position of the exposure point in the image sequence on the photosensitive coating, so as to form the latent image of the image sequence in the scanning area of ​​each laser.

[0009] After the photosensitive coating is developed to form multiple developed image sequences corresponding to the multiple image sequences, if the multiple developed image sequences are not aligned horizontally starting from the same sorted target binary image, then the coordinate values ​​of the difference points of the target binary images in each developed image sequence in the horizontal direction are detected.

[0010] Optionally, as a possible implementation, in this embodiment of the invention, controlling each laser to expose the image sequence at the mapped position of the exposure point on the photosensitive coating using synchronized switching commands may include:

[0011] Each laser is controlled to expose the scanned area to the location mapped on the photosensitive coating of the exposure point in an image sequence;

[0012] Alternatively, each laser can be controlled to sequentially expose the scanning area to the mapped positions of multiple image sequences on the photosensitive coating.

[0013] Optionally, as a possible implementation, in this embodiment of the invention, the binary image in the image sequence is composed of pattern units corresponding to four non-repeating binary numbers, wherein binary number 0 and binary number 1 correspond to different image patterns.

[0014] Optionally, as a possible implementation, the laser direct-write image detection method in this embodiment of the invention may further include:

[0015] A marker image is set between two adjacent image sequences to identify different positions of the image sequences, and the pixel row of each marker image does not overlap with the pixel row of the adjacent image sequence.

[0016] Optionally, as a possible implementation, in this embodiment of the invention, the coordinate values ​​of the identification image in the horizontal direction are distributed in an arithmetic sequence.

[0017] A second aspect of the present invention provides a laser direct-write image detection system, which may include:

[0018] The first setting module is used to set multiple sets of non-repeating binary images to form an image sequence in the horizontal direction, and to perform binarization processing on the image sequence to obtain the position of the laser exposure point;

[0019] The control module, during the synchronous scanning of multiple pixel rows on the photosensitive coating by multiple lasers in the laser array, controls each laser to expose the mapping position of the exposure point in the image sequence on the photosensitive coating with synchronous switching commands, so as to form the latent image of the image sequence in the respective scanning area of ​​each laser.

[0020] The detection module, after the photosensitive coating has been developed to form multiple developed image sequences corresponding to the multiple image sequences, if the multiple developed image sequences are not aligned in the horizontal direction starting from the same sorted target binary image, then detects the coordinate values ​​of the difference points of the target binary images in each developed image sequence in the horizontal direction.

[0021] Optionally, as one possible implementation, the control module may include:

[0022] The first control unit controls each laser to expose the image point in the scanned area to the mapped position on the photosensitive coating in an image sequence.

[0023] Alternatively, the second control unit controls each laser to sequentially expose the locations on the photosensitive coating of the exposure points in multiple image sequences of the scanned area.

[0024] Optionally, as one possible implementation, the laser direct-write image detection system may further include:

[0025] The second setting module sets up a marker image between two adjacent image sequences to identify image sequences at different positions, wherein the pixel row of each marker image does not overlap with the pixel row of the adjacent image sequence.

[0026] A third aspect of the present invention provides a computer device, the computer device including a processor, the processor being configured to execute a computer program stored in a memory to implement the steps of the first aspect and any possible implementation thereof.

[0027] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the first aspect and any possible implementation thereof.

[0028] As can be seen from the above technical solutions, the embodiments of the present invention have the following advantages:

[0029] In this embodiment of the invention, multiple sets of non-repeating binary images are arranged horizontally to form an image sequence. The image sequence is then binarized to obtain the position of the laser exposure point. Synchronous switching commands are then used to simultaneously control each laser to expose the mapping position of the exposure point on the photosensitive coating in the image sequence, thus forming a latent image of the image sequence in the scanning area of ​​each laser. After the photosensitive coating has developed into multiple developed image sequences corresponding to the multiple image sequences, it can be observed that the multiple developed image sequences are not horizontally aligned starting from the same ordered target binary image. If they are not aligned, the horizontal coordinate values ​​of the target binary image in each developed image sequence are detected, thus obtaining the position of the laser spot at the time of exposure of the target binary image. Furthermore, the relative offset of the laser spot at the time of exposure of the difference point in the target binary image can be calculated based on the coordinate values. Therefore, the scheme in this embodiment achieves precise positioning of the image deformation area and measurement of deformation on the complete exposure surface by detecting the horizontal offset of the laser spots of different lasers at the same time, which is beneficial for correcting errors in laser direct-write imaging. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of an embodiment of a laser direct-write image detection method according to the present invention;

[0031] Figure 2 This is a schematic diagram of the binary image corresponding to the binary number in a laser direct-write image detection method according to an embodiment of the present invention;

[0032] Figure 3 This is a schematic diagram of the distribution of the developed image sequence in an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of one embodiment of a computer device according to an embodiment of the present invention. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0035] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] In the description of this application, unless otherwise stated, "a plurality of" means two or more. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" shall be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; as a direct connection or an indirect connection through an intermediate medium; or as a connection within two components.

[0037] For ease of understanding, the laser array formed by multiple lasers applicable to the embodiments of this application will be described below. The lasers in this laser array have non-overlapping vertical projection points along a preset straight line (vertical direction). In practical applications, the laser array repeatedly scans the photosensitive coating along the laser scanning direction (perpendicular to the direction of the preset straight line). During one scan, multiple laser beams in the laser array scan multiple pixel rows of the same batch on the photosensitive coating simultaneously at a fixed interval (this fixed interval is determined by the installation position), selectively exposing the pixels in each pixel row. After the previous scan is completed, the lasers move with a fixed step distance along the direction perpendicular to the scanning direction (i.e., the preset straight line direction), allowing the lasers to perform parallel scanning and exposure of unscanned pixel rows in the scanning gaps between adjacent lasers on the photosensitive coating.

[0038] It is understood that the connecting lines between adjacent lasers in the laser array of this application can form straight lines perpendicular to the laser scanning direction, straight lines not perpendicular to the laser scanning direction, or broken lines, as long as the vertical projection points of the lasers in the laser array along the preset straight line direction (which is perpendicular to the laser scanning direction) do not overlap. The specific arrangement is not limited here. The specific mechanical structure for moving the laser components is not limited here. For example, a robotic arm, screw drive, or other methods can be used to move the laser array in the horizontal and vertical directions.

[0039] It should be noted that, in this embodiment, the horizontal direction refers to the direction parallel to the direction of the pixel rows of the desired image on the photosensitive coating or a plane parallel to the photosensitive coating, and the vertical direction refers to the direction perpendicular to the selected horizontal direction on the photosensitive coating or a plane parallel to the photosensitive coating. Therefore, the horizontal and vertical directions in this application vary with the location of the photosensitive coating and the direction of the pixel rows of the desired image on the photosensitive coating, and the specific directions are not limited here.

[0040] The specific process described below in the embodiments of this application is as follows. Please refer to [link / reference]. Figure 1 One embodiment of the laser direct-write image detection method of the present invention may include:

[0041] S101: Set multiple sets of non-repeating binary images, sort them horizontally to form an image sequence, and perform binarization on the image sequence to obtain the position of the laser exposure point.

[0042] To determine the position of the light spots of multiple lasers in a laser array at the same time, the applicant proposed that multiple lasers be exposed synchronously (the switching commands of multiple lasers at the same time are the same, i.e., synchronous exposure), forming an image sequence corresponding to each laser. Then, based on the developed image, the position information of the light spots of each laser at the same time is identified, and then the horizontal offset of each laser in the laser array at this time is determined according to the position information.

[0043] Therefore, it is necessary to set up multiple sets of non-repeating binary images in the horizontal direction to form an image sequence through the measurement system, and then perform binarization processing on the image sequence to obtain the position of the laser exposure point. The specific binarization is an existing technology and will not be elaborated here.

[0044] For example, as one possible implementation, the binary image in the image sequence is composed of pattern units corresponding to non-repeating four-bit binary numbers, where binary number 0 and binary number 1 each correspond to different pattern units. For example Figure 2 As shown, the pattern unit corresponding to the binary number 0 is different from the pattern unit corresponding to the binary number 1. The images corresponding to the four binary numbers can form 16 unique binary images, which can then be sorted in the horizontal direction to form an image sequence.

[0045] It is understood that the above image sequence is merely an example. In practical applications, other forms of pattern units can also be used. For example, different pattern units can be set for each base of octal, decimal, and hexadecimal numbers. Then, non-repeating pattern units corresponding to octal, decimal, and hexadecimal numbers can be used to form an image sequence. The specific composition of the image sequence is not limited here. It only requires multiple sets of non-repeating binary images.

[0046] S102: Using synchronized switching commands, each laser is controlled to expose the mapping position of the exposure point in the image sequence on the photosensitive coating, so as to form the latent image of the image sequence in the respective scanning area of ​​each laser.

[0047] After setting the image sequence, multiple lasers in the laser array can be controlled to synchronously scan multiple pixel rows on the photosensitive coating. During the scanning process, synchronous switching commands control each laser to expose the mapping position of the exposure point in the image sequence on the photosensitive coating, so as to form a latent image of the image sequence in the scanning area of ​​each laser. Then, after development processing, each image sequence is obtained as a corresponding developed image sequence. The specific development process is existing technology and will not be described in detail here.

[0048] It should be noted that the scanning area of ​​each laser can accommodate dozens of image sequences. In this embodiment, not only can each laser be controlled to expose an area corresponding to one image sequence in the scanning area, but it can also be controlled to sequentially and synchronously expose multiple areas corresponding to image sequences in its respective scanning area. The specific method is not limited here. Sequentially and synchronously exposing multiple areas corresponding to image sequences by each laser not only expands the detection range of image deformation, improving detection range and accuracy, but also allows for the detection of deformation in different image sequences from the same laser within the scanning area, further expanding the detection range and dimensionality.

[0049] S103: If multiple developed image sequences are not aligned horizontally starting from the same sorted target binary image, then detect the horizontal coordinates of the difference points of the target binary images in each developed image sequence.

[0050] After the photosensitive coating is developed to form multiple image sequences corresponding to multiple image sequences, if the multiple image sequences are not aligned in the horizontal direction starting from the same sorted target binary image, the coordinates of the difference points of the target binary image in each image sequence in the horizontal direction are detected, and then the relative offset of the laser spot in the horizontal direction can be calculated based on each coordinate value.

[0051] For example, such as Figure 3 The image shown only illustrates the developed image sequences corresponding to image sequences 1010 and 1101. In practical applications, there can be more image sequences, with multiple developed image sequences derived from the same sorted binary image of the target. Figure 3(Selected section) Starting from the horizontal misalignment, if the horizontal coordinates of the difference points of the target binary images in the nth, n+1th, n+2th, and n+3th developed image sequences are 32, 31, 33, and 34 respectively, then the horizontal offsets of the laser spot corresponding to the nth, n+2th, and n+3th developed image sequences relative to the laser spot of the n+1th developed image sequence at the moment of printing the difference points of the target binary image can be determined as 1, 2, and 3 respectively. Then, the original image can be adjusted according to each offset to correct the offset.

[0052] As disclosed above, in this embodiment, multiple sets of non-repeating binary images are arranged horizontally to form an image sequence. The image sequence is then binarized to obtain the position of the laser exposure point. Synchronous switching commands are then used to simultaneously control each laser to expose the mapping position of the exposure point on the photosensitive coating in the image sequence, thereby forming a latent image of the image sequence in the scanning area of ​​each laser. After the photosensitive coating has developed into multiple developed image sequences corresponding to multiple image sequences, it can be observed that the multiple developed image sequences are not aligned horizontally starting from the same sorted target binary image. If they are not aligned, the horizontal coordinate values ​​of the target binary image in each developed image sequence are detected, thus obtaining the position of the laser spot at the moment of exposure of the target binary image. Furthermore, the relative offset of the laser spot at the moment of exposure of the difference point in the target binary image can be calculated based on the coordinate values. Therefore, the solution in this application embodiment achieves precise positioning (accuracy up to pixel level) of the image deformation area position and measurement of deformation on the full exposure surface by detecting the horizontal offset of the light spots of different lasers at the same time, which is beneficial for correcting the error of laser direct writing imaging.

[0053] Optionally, as one possible implementation, in the above... Figure 1 Based on the illustrated embodiment, because the spot size is larger than the pixel row, points in adjacent pixel rows in the area of ​​the exposed point are exposed, resulting in overexposure of adjacent image sequences and causing adjacent image sequences to overlap, forming an image like... Figure 2 The developed pattern unit is shown. To avoid image overlap, adjacent image sequences need to be separated. Therefore, when each laser synchronously exposes multiple image sequences corresponding to different locations within the scanning area, a marker image can be placed between two adjacent image sequences to identify the different positions of the image sequences (the pixel row of each marker image does not overlap with the pixel row of the adjacent image sequence), thus separating adjacent image sequences by one or more pixel rows to avoid image sequence overlap due to overexposure. Preferably, the coordinate values ​​of the marker images in the horizontal direction can be distributed in an arithmetic sequence, or they can not follow an arithmetic sequence distribution; it is sufficient that the marker images are spaced apart in the horizontal direction.

[0054] This application also provides a laser direct-write image detection system, which may include:

[0055] The first setting module is used to set multiple sets of non-repeating binary images to form an image sequence in the horizontal direction, and to perform binarization processing on the image sequence to obtain the position of the laser exposure point;

[0056] The control module, during the synchronous scanning of multiple pixel rows on the photosensitive coating by multiple lasers in the laser array, controls each laser to expose the mapping position of the exposure point on the photosensitive coating in the image sequence with synchronous switching commands, so as to form the latent image of the image sequence in the scanning area of ​​each laser.

[0057] The detection module detects the horizontal coordinates of the difference points in the target binary images in each developed image sequence after the photosensitive coating has been developed to form multiple developed image sequences corresponding to multiple image sequences. If the multiple developed image sequences are not aligned horizontally starting from the target binary images of the same order, the module detects the horizontal coordinates of the difference points in the target binary images in each developed image sequence.

[0058] Optionally, as one possible implementation, the control module may include:

[0059] The first control unit controls each laser to expose the image of the scanned area at the mapped position of the exposure point on the photosensitive coating.

[0060] Alternatively, the second control unit controls each laser to sequentially expose the mapping positions of the exposure points on the photosensitive coating in multiple image sequences of the scanned area.

[0061] Optionally, as one possible implementation, the laser direct-write image detection system may further include:

[0062] The second setting module sets up a marker image between two adjacent image sequences to identify image sequences at different positions, and the pixel row of each marker image does not overlap with the pixel row of the adjacent image sequence.

[0063] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0064] The laser direct-write image detection system in this invention has been described above from the perspective of modular functional entities. Please refer to [link to relevant documentation]. Figure 4 The computer device in the embodiments of the present invention will now be described from the perspective of hardware processing:

[0065] The computer device 1 may include a memory 11, a processor 12, and an input / output bus 13. The processor 11 executes the computer program to implement the above-described... Figure 1 The steps in the method embodiments shown, for example Figure 1 Steps 101 to 103 are shown. Alternatively, the processor executes a computer program to implement the functions of each module or unit in the above-described device embodiments.

[0066] The memory 11 includes at least one type of readable storage medium, including flash memory, hard disk, multimedia card, card-type memory (e.g., SD or DX memory), magnetic memory, magnetic disk, optical disk, etc. In some embodiments, the memory 11 can be an internal storage unit of the computer device 1, such as the hard disk of the computer device 1. In other embodiments, the memory 11 can be an external storage device of the computer device 1, such as a plug-in hard disk, smart media card (SMC), secure digital (SD) card, flash card, etc., equipped on the computer device 1. Furthermore, the memory 11 can include both internal storage units and external storage devices of the computer device 1. The memory 11 can be used not only to store application software and various types of data installed on the computer device 1, such as computer program code, but also to temporarily store data that has been output or will be output.

[0067] In some embodiments, processor 12 may be a central processing unit (CPU), controller, microcontroller, microprocessor or other data processing chip, used to run program code stored in memory 11 or process data, such as executing computer programs.

[0068] The input / output bus 13 can be a peripheral component interconnect (PCI) bus or an extended industry standard architecture (EISA) bus, etc. This bus can be divided into address bus, data bus, control bus, etc.

[0069] Furthermore, the computer device may also include a wired or wireless network interface 14, which may optionally include a wired interface and / or a wireless interface (such as a Wi-Fi interface, a Bluetooth interface, etc.), typically used to establish communication connections between the computer device 1 and other electronic devices.

[0070] Optionally, the computer device 1 may further include a user interface, which may include a display, an input unit such as a keyboard, and optionally, a standard wired interface or a wireless interface. Optionally, in some embodiments, the display may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, or an OLED (Organic Light-Emitting Diode) touchscreen, etc. The display may also be appropriately referred to as a screen or display unit, used to display information processed in the computer device 1 and to display a visual user interface.

[0071] Figure 4 Only computer device 1 with components 11-14 and computer programs is shown; those skilled in the art will understand that... Figure 4 The structure shown does not constitute a limitation on the computer device 1, and may include fewer or more components than shown, or combine certain components, or have different component arrangements.

[0072] The present invention also provides a computer-readable storage medium storing a computer program, which, when executed by a processor, can perform the functions described above. Figure 1 The steps in the method embodiments shown, for example Figure 1 Steps 101 to 103 are shown. Alternatively, the processor executes a computer program to implement the functions of each module or unit in the above-described device embodiments.

[0073] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0074] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0075] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0076] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0077] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser direct-write image detection method, characterized in that, The method, applied to a laser array movable in both horizontal and vertical directions, includes: Multiple sets of non-repeating binary images are arranged horizontally to form an image sequence, and the image sequence is binarized to obtain the position of the laser exposure point; During the synchronous scanning of multiple pixel rows on the photosensitive coating by multiple lasers in the laser array, a synchronous switching command controls each laser to expose the mapping position of the exposure point in the image sequence on the photosensitive coating, so as to form the latent image of the image sequence in the scanning area of ​​each laser. After the photosensitive coating is developed to form multiple developed image sequences corresponding to the multiple image sequences, if the multiple developed image sequences are not aligned in the horizontal direction starting from the target binary images of the same order, the coordinate values ​​of the difference points of the target binary images in each developed image sequence in the horizontal direction are detected, and the relative offset of the laser spot in the horizontal direction is calculated based on each coordinate value.

2. The method according to claim 1, characterized in that, The method of controlling each laser to expose the image sequence at the mapped position of the exposure point on the photosensitive coating using synchronized switching commands includes: Each laser is controlled to expose the scanned area to the location mapped on the photosensitive coating of the exposure point in an image sequence; Alternatively, each laser can be controlled to sequentially expose the scanning area to the mapped positions of multiple image sequences on the photosensitive coating.

3. The method according to claim 1 or 2, characterized in that, The binary image in the image sequence is composed of pattern units corresponding to four non-repeating binary numbers, where binary number 0 and binary number 1 correspond to different pattern units.

4. The method according to claim 1 or 2, characterized in that, The method further includes: A marker image is set between two adjacent image sequences to identify different positions of the image sequences, and the pixel row of each marker image does not overlap with the pixel row of the adjacent image sequence.

5. The method according to claim 4, characterized in that, The coordinate values ​​of the marker image in the horizontal direction are distributed in an arithmetic sequence.

6. A laser direct-write image detection system, characterized in that, Applications include laser arrays that can move in both horizontal and vertical directions, including: The first setting module is used to set multiple sets of non-repeating binary images to form an image sequence in the horizontal direction, and to perform binarization processing on the image sequence to obtain the position of the laser exposure point; The control module, during the synchronous scanning of multiple pixel rows on the photosensitive coating by multiple lasers in the laser array, controls each laser to expose the mapping position of the exposure point in the image sequence on the photosensitive coating with synchronous switching commands, so as to form the latent image of the image sequence in the respective scanning area of ​​each laser. After the photosensitive coating is developed to form multiple developed image sequences corresponding to the multiple image sequences, if the multiple developed image sequences are not aligned in the horizontal direction starting from the same sorted target binary image, the detection module detects the coordinate values ​​of the difference points of the target binary images in each developed image sequence in the horizontal direction, and calculates the relative offset of the laser spot in the horizontal direction based on each coordinate value.

7. The system according to claim 6, characterized in that, The control module includes: The first control unit controls each laser to expose the image point in the scanned area to the mapped position on the photosensitive coating in an image sequence. Alternatively, the second control unit controls each laser to sequentially expose the locations on the photosensitive coating of the exposure points in multiple image sequences of the scanned area.

8. The system according to claim 6 or 7, characterized in that, Also includes: The second setting module sets up a marker image between two adjacent image sequences to identify image sequences at different positions, wherein the pixel row of each marker image does not overlap with the pixel row of the adjacent image sequence.

9. A computer device, characterized in that, The computer device includes a processor that executes a computer program stored in a memory to implement the method as described in any one of claims 1 to 5.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 5.

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