CN116852708A

CN116852708A - Light source mechanism projection area processing method and device and nonvolatile storage medium

Info

Publication number: CN116852708A
Application number: CN202310934561.8A
Authority: CN
Inventors: 丁先华; 黄泽英; 陈志仁
Original assignee: Guangzhou Heygears IMC Inc
Current assignee: Guangzhou Heygears IMC Inc
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2023-10-10

Abstract

The invention discloses a light source mechanism projection area processing method and device and a nonvolatile storage medium. Wherein the method is applied to a 3D printing apparatus, the 3D printing apparatus comprising a build surface, a shaping platform, and a plurality of light source mechanisms defining a print zone between the build surface and the shaping platform, the plurality of light source mechanisms being for projecting light sources towards the print zone, the processing method comprising: acquiring a plurality of projection areas formed by projecting a plurality of light source mechanisms to a printing area; determining the position relation of a plurality of projection areas; according to the position relation, respectively determining overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed; the overlapping regions are processed to coincide with the light sources at any one of the plurality of projection regions. The invention solves the technical problem that the overlapping area between a plurality of light source mechanisms cannot be determined in a self-adaptive mode in the related art.

Description

Light source mechanism projection area processing method and device and nonvolatile storage medium

Technical Field

The invention relates to the field of 3D printing, in particular to a light source mechanism projection area processing method and device and a nonvolatile storage medium.

Background

In the photo-curing 3D printing process, it is often required to project light to the polymerizable liquid located on the molding surface through a light emitting mechanism, so that the polymerizable liquid is photo-cured layer by layer into a printed article. It will be appreciated that in order to be able to simultaneously form a greater size or number of prints, a plurality of light emitting mechanisms (hereinafter light source mechanisms) may be arranged to project a larger swath to meet printing requirements.

However, in the case of performing light projection using a plurality of light source mechanisms, it is necessary to determine the overlapping regions of the light projected by the different light emitting mechanisms, and set the light intensities of the projection regions of the different light source mechanisms so that the light intensities of the overlapping regions are adapted to the light intensities of the non-overlapping regions. In addition, when a plurality of light source mechanisms are used to project light rays and the light source mechanisms are operated simultaneously, there are some light source mechanisms that cannot be operated, and it is necessary to re-detect and feed back the overlapping regions of the light source mechanisms.

The method for determining the overlapping area between the light source mechanisms in the related art is closely related to the specific arrangement mode of the light source mechanisms, and when the arrangement mode of the light emitting structure is changed or a certain light source mechanism cannot work, the overlapping area between the light source mechanisms cannot be continuously determined again in the original mode, so that a new method for determining the overlapping area between the light source mechanisms needs to be developed.

In view of the above problems, no effective solution has been proposed at present.

Disclosure of Invention

The embodiment of the invention provides a light source mechanism projection area processing method, a light source mechanism projection area processing device and a nonvolatile storage medium, which at least solve the technical problem that the overlapping area among a plurality of light source mechanisms cannot be adaptively determined in the related art.

According to an aspect of an embodiment of the present invention, there is provided a light source mechanism projection area processing method applied to a 3D printing apparatus, the 3D printing apparatus including a construction surface, a molding platform, and a plurality of light source mechanisms, the molding platform being for forming a three-dimensional object; defining a printing area between the build surface and the build platform, filling the printing area with a polymerizable liquid; a plurality of light source mechanisms for projecting light sources toward the print zone to cause the polymerizable liquid to form a solid or semi-solid polymer; the processing method comprises the following steps: acquiring a plurality of projection areas formed by projecting a plurality of light source mechanisms to a printing area; determining the position relation of a plurality of projection areas; according to the position relation, respectively determining overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed; the overlapping regions are processed to coincide with the light sources at any one of the plurality of projection regions.

Optionally, according to the positional relationship, determining overlapping areas of the projection area to be processed and other projection areas in the plurality of projection areas according to a predetermined processing sequence includes: confirming that the first projection area in the projection areas to be processed is the projection area to be processed according to a preset processing sequence; determining the area adjacent to the projection area to be processed in the preset direction as other projection areas according to the position relation, wherein the preset direction is related to the preset processing sequence; an overlap region of the projection region to be processed and other projection regions is determined.

Optionally, determining, according to the positional relationship, an area located adjacent to the projection area to be processed in the predetermined direction as the other projection area includes: the predetermined direction comprises a first direction and a second direction, and when a first adjacent area adjacent to the projection area to be processed exists in the first direction of the projection area to be processed, other projection areas are determined to comprise the first adjacent area according to the position relation; determining that the other projection areas include a second adjacent area in the case that there is a second adjacent area adjacent to the projection area to be processed in the second direction of the projection area to be processed; determining that other projection areas comprise a third adjacent area under the condition that the third adjacent area adjacent to the projection area to be processed exists in the first direction of the second adjacent area; in the case where there is a fourth adjacent region adjacent to the projection region to be processed in the opposite direction to the first direction of the second adjacent region, it is determined that the other projection region includes the fourth adjacent region.

Optionally, the first adjacent region is a projection region to be processed next to the projection region to be processed in the predetermined processing sequence.

Optionally, determining the positional relationship of the plurality of projection areas includes: determining coordinates of reference points of each of the plurality of projection areas; and determining the position relation of the plurality of projection areas according to the coordinates of the reference points of the plurality of projection areas.

Optionally, the method further comprises: determining the position of an overlapping area of a projection area to be processed and other projection areas; the positions of the overlapping areas are respectively corresponding to the light source mechanisms corresponding to the projection areas to be processed and the light source mechanisms corresponding to other projection areas.

Optionally, processing the overlapping region to conform the light source at any one of the plurality of projection regions includes: acquiring an image to be projected; dividing an image to be projected according to overlapping areas of the plurality of projection areas and other projection areas respectively to obtain a plurality of projection image blocks; determining projection image blocks corresponding to the light source mechanisms respectively; and respectively transmitting the plurality of projection image blocks to corresponding light source mechanisms, wherein the plurality of light source mechanisms are used for respectively projecting the respective corresponding projection image blocks to the construction surface.

Optionally, before the plurality of projected image blocks are sent to the corresponding light source mechanisms, the method further includes: and carrying out image information gradual change processing on the image overlapping areas in the plurality of projection image blocks.

Optionally, performing image information gradient processing on overlapping areas in the plurality of projection image blocks includes: performing image processing on an image overlapping region in a projection image block to be processed in a plurality of projection image blocks so as to divide the image overlapping region into a plurality of subareas according to image information; the image information superposition values of the plurality of projection image blocks in the subareas fall into a preset range.

Optionally, when the number of light source mechanisms corresponding to the image overlapping area is the first preset number, the image information value of the image overlapping area is decreased in a step manner along the third direction and is kept unchanged along the fourth direction; the third direction is the splicing direction of the projection image block to be processed and is the direction of the inner side of the projection image block to be processed to the edge side; the third direction and the fourth direction are perpendicular; when the number of the light source mechanisms corresponding to the image overlapping areas is a second preset number, the image information values of the image overlapping areas are in step decrease along a third direction; wherein the second preset number is greater than the first preset number.

Optionally, the change trend of the first image information distribution and the change trend of the second image information distribution are in a mirror image relationship or an approximate mirror image relationship; the first image information is distributed as the image information of the image overlapping area of any one of the adjacent projected image blocks; the second image information distribution is the image information distribution of the image overlapping area of another projection image block in the adjacent projection image blocks; the inversion axis of the mirror image relationship is determined according to the position of either projected image block and the position of the other projected image block.

Optionally, the first image information is mirrored or approximately mirrored with the second image information; the first image information is the image information of the overlapping area of any one of the adjacent divided images; the second image information is the image information of the overlapping area of the other divided image in the adjacent divided images; the inversion axis of the mirror image relationship is determined according to the position of any one divided image and the position of another divided image.

Optionally, before acquiring the image to be projected, the method further includes: determining the running states corresponding to the light source mechanisms respectively according to the projection areas, wherein the running states comprise a normal state and an abnormal state; and under the condition that the running states corresponding to the light source mechanisms respectively comprise abnormal states, sending the running states corresponding to the light source mechanisms respectively to the cloud end, wherein the cloud end is used for determining the image to be projected according to the running states corresponding to the light source mechanisms respectively.

Optionally, before dividing the image to be projected according to overlapping areas of the plurality of projection areas and other projection areas respectively to obtain a plurality of projection image blocks, the method further includes: judging whether the size of the image to be projected is matched with the spliced area of the plurality of projection areas or not; under the condition that the size of the image to be projected is not matched with the spliced areas of the plurality of projection areas, determining the running states corresponding to the plurality of light source mechanisms respectively, and sending the running states to the cloud end, wherein the running states comprise a normal state and an abnormal state, and the cloud end is used for redetermining the image to be projected according to the running states corresponding to the plurality of light source mechanisms respectively.

According to another aspect of the embodiment of the present invention, there is also provided a light source mechanism projection area processing apparatus applied to a 3D printing device, the 3D printing device including a construction surface, a molding platform, and a plurality of light source mechanisms, the molding platform being used to form a three-dimensional object; defining a printing area between the build surface and the build platform, filling the printing area with a polymerizable liquid; a plurality of light source mechanisms for projecting light sources toward the print zone to cause the polymerizable liquid to form a solid or semi-solid polymer; the processing device comprises: the acquisition module is used for acquiring a plurality of projection areas formed by projecting the plurality of light source mechanisms to the printing area; a first determining module for determining a positional relationship of the plurality of projection areas; the second determining module is used for respectively determining overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to the position relation and a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed; and the processing module is used for processing the overlapped area so as to enable the light sources at any position of the plurality of projection areas to be consistent.

According to still another aspect of the embodiments of the present invention, there is further provided a nonvolatile storage medium, the nonvolatile storage medium including a stored program, wherein when the program runs, a device in which the nonvolatile storage medium is controlled to execute the method for processing the projection area of the light source mechanism in any one of the above.

According to still another aspect of the embodiment of the present application, there is further provided a computer device, including a processor, configured to execute a program, where the program executes any one of the above methods for processing a projection area of a light source mechanism.

In the embodiment of the application, a plurality of projection areas formed by acquiring a plurality of light source mechanisms to project to a printing area are acquired; determining the position relation of a plurality of projection areas; according to the position relation, respectively determining overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed; the overlapping area is processed to make the light sources at any position of the plurality of projection areas consistent, so that the purpose of sequentially determining the overlapping areas of the respective projection areas of the plurality of light source mechanisms according to a preset sequence is achieved, the technical effect of adaptively determining the overlapping areas of the respective projection areas of the plurality of light source mechanisms is achieved, and the technical problem that the overlapping areas among the plurality of light source mechanisms cannot be adaptively determined in the related art is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 shows a block diagram of a hardware architecture of a computer terminal for implementing a method for processing a projected area of a light source mechanism;

FIG. 2 is a schematic diagram of a 3D printing device provided in accordance with an alternative embodiment of the present invention;

FIG. 3 is a flow chart of a method for processing a projection area of a light source mechanism according to an embodiment of the present invention;

FIG. 4 is a schematic illustration of an array arrangement of a plurality of projection areas provided in accordance with an alternative embodiment of the present invention;

FIG. 5 is a schematic illustration of an overlap region of projection areas provided in accordance with an alternative embodiment of the present invention;

FIG. 6 is a schematic illustration of an overlap region of another projection area provided in accordance with an alternative embodiment of the present invention;

FIG. 7 is a schematic illustration of a plurality of projected image block merges provided in accordance with an alternative embodiment of the present invention;

fig. 8 is a block diagram of a light source mechanism projection area processing apparatus according to an embodiment of the present invention.

Detailed Description

In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In accordance with an embodiment of the present invention, there is provided a method embodiment of light source mechanism projection area processing, it being noted that the steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer executable instructions, and, although a logical sequence is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in a different order than that illustrated herein.

The printing surface is a surface on which the light source mechanism irradiates the projected image, and then the photocurable liquid is cured at the interface to obtain a cured sheet matching the contour of the projected image. For example, for an upper projected area-exposure photo-curable 3D print, the print surface is the level position of the photo-curable liquid; for the downward projected area exposure type photo-curing 3D printing, the printing surface is positioned at the bottom of the material tray. It should be noted that the printing surface is referred to herein as a position and orientation with respect to the light source mechanism, and when determining the printing surface, the position of the printing surface can be quickly identified on the printer by referring to the positions of part of the components of the actual printer; on the other hand, if the component is missing, the position data information of the print surface may be checked based on the position data information of the component.

The light source mechanism related to the invention can be any Display component capable of displaying exposure image information in the field, and specifically can be any one or any combination of a laser Display device capable of displaying a projection image, a projection device capable of projecting the projection image, for example, a DLP projection module, an LCD projection module, an LCOS (Liquid Crystal On Silicon ) projection module, an OLED projection module, a Micro-Led (Micro light emitting diode ) module, a Mini-Led (Mini light emitting diode, sub-millimeter light emitting diode) module, an LCD module, an OLED module, and a SXRD (Silicon X-Tal Re-active Display) projection module, and can also be a Micro-OLED module or a Mini-OLED module. The optical calibration is a processing mode for correcting the image displayed by the light source module.

The method according to the first embodiment of the present application may be implemented in a mobile terminal, a computer terminal or a similar computing device. Fig. 1 shows a block diagram of a hardware configuration of a computer terminal for implementing a light source mechanism projection area processing method. As shown in fig. 1, the computer terminal 10 may include one or more (shown as 102a, 102b, … …,102 n) processors (which may include, but are not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data. In addition, the method may further include: a display, an input/output interface (I/O interface), a Universal Serial BUS (USB) port (which may be included as one of the ports of the BUS), a network interface, a power supply, and/or a camera. It will be appreciated by those of ordinary skill in the art that the configuration shown in fig. 1 is merely illustrative and is not intended to limit the configuration of the electronic device described above. For example, the computer terminal 10 may also include more or fewer components than shown in FIG. 1, or have a different configuration than shown in FIG. 1.

It should be noted that the one or more processors and/or other data processing circuits described above may be referred to herein generally as "data processing circuits. The data processing circuit may be embodied in whole or in part in software, hardware, firmware, or any other combination. Furthermore, the data processing circuitry may be a single stand-alone processing module or incorporated, in whole or in part, into any of the other elements in the computer terminal 10. As referred to in embodiments of the application, the data processing circuit acts as a processor control (e.g., selection of the path of the variable resistor termination connected to the interface).

The memory 104 may be used to store software programs and modules of application software, such as a program instruction/data storage device corresponding to the light source mechanism projection area processing method in the embodiment of the present invention, and the processor executes the software programs and modules stored in the memory 104, thereby executing various functional applications and data processing, that is, implementing the light source mechanism projection area processing method of the application program. Memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include memory located remotely from the processor, which may be connected to the computer terminal 10 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The display may be, for example, a touch screen type Liquid Crystal Display (LCD) that may enable a user to interact with a user interface of the computer terminal 10.

When 3D printing is performed, a 3D model of a printed piece can be established first, then the 3D model of the printed piece is sliced layer by layer, when printing, the first slice model can be started, each slice model is printed in sequence on the basis of the previous slice model which is successfully printed, and finally a complete 3D model of the printed piece is obtained, wherein the printed piece is a printed object in 3D printing. Fig. 2 is a schematic diagram of a 3D printing apparatus according to an alternative embodiment of the present invention, as shown in fig. 2, where, when printing is performed on each layer of slice model, a projection image may be generated according to the shape of the layer of slice model, and the projection image is sent to a light source mechanism 23, that is, a light machine; the light source means 23 may project a projected image onto a print area in the tray 22 filled with polymerizable liquid, i.e. onto a print surface, where the polymerizable liquid will solidify under the irradiation of light emitted by the light source means 23 between the shaping platform 21 and the build surface to form a solid or semi-solid polymer, in which case the shaping platform 21 may be controlled to move so that the solid or semi-solid polymer separates layer by layer from the build surface, eventually forming a model matching the projected image. The size of the 3D printer that can support the print object at maximum is the print format, and can be identified by the specification of the pixels of the light source mechanism 23.

The structured surface is the surface where light contacts the polymerizable liquid, and the polymerizable liquid may be a resin or any other polymerizable material. As shown in fig. 2, when the light-curing 3D printing is performed by adopting the downward projection method, light irradiates the resin on the bottom layer of the tray through the bottom of the tray, and a curing layer is formed between the molding platform and the bottom of the tray, and at this time, the construction surface may be the upper surface of the release film disposed on the bottom of the tray. In addition, the photo-curing printing can be performed by adopting an upward projection mode, and light rays are irradiated on the resin from above, and at the moment, the structural surface is the surface of the resin contacted with the light rays. It should be noted that the method for processing the projection area of the light source mechanism provided by the invention can be applied to a 3D printing device adopting any one of the above projection modes.

It is contemplated that to be able to simultaneously mold a larger size or number of prints, as shown in fig. 2, multiple light source mechanisms may be arranged to project a larger swath in combination to meet printing needs. At this time, in order to ensure that the printed model is complete, and no gap exists in the middle, the projection areas of the light source mechanisms can be partially overlapped, so that the light source mechanisms project light together, and the 3D model is printed on a large format.

Because the overlapping area exists among the projection areas projected by the light source mechanisms, if the size and the position of the overlapping area are not determined, the images projected by the light source mechanisms are not processed according to the overlapping area, and the printed model is nonuniform in material quality and unstable in structure. Therefore, the projection areas of the light source mechanisms need to be processed before printing, and the overlapping areas of the projection areas corresponding to the light source mechanisms are determined, so that the projection images which each light source mechanism should project can be reasonably arranged when 3D printing is performed subsequently. Fig. 3 is a flow chart of a light source mechanism projection area processing method according to an embodiment of the invention, as shown in fig. 3, the method includes the following steps:

in step S302, a plurality of projection areas corresponding to the plurality of light source mechanisms are obtained.

In this step, the execution main body of this scheme may be a program located in the 3D printer, the plurality of light source mechanisms may be a plurality of light machines arranged on the 3D printer in a certain rule, the plurality of light source mechanisms and the plurality of projection areas are in one-to-one correspondence, the plurality of projection areas are projected on a printing surface formed by polymerizable liquid after being combined, the size of covering polymerizable liquid is the printing format, where the plurality of light source mechanisms may be arranged in an array, and the plurality of projection areas may also be arranged in an array. When determining the overlapping areas of the plurality of projection areas corresponding to the plurality of light source mechanisms, the plurality of projection areas corresponding to the plurality of light source mechanisms included in the 3D printer may be acquired first, and then the overlapping areas between the plurality of projection areas may be determined.

It should be noted that, the acquiring of the plurality of projection areas may be acquiring the coordinate parameters of the plurality of projection areas, and the coordinate parameters may be acquiring the coordinates of a certain position point in the projection area on the web, for example, when the plurality of projection areas are all rectangular, the top left corner vertex of the rectangle may be used as the position point of the projection area, the coordinates of the position point on the web may be used as the coordinate parameters of the projection area, and similarly, the coordinate parameters of the projection area may be recorded by using other vertices or center points of the rectangle as the position points of the projection area.

Step S304, determining a positional relationship of the plurality of projection areas.

In this step, the positional relationship between the plurality of projection areas may be determined from the plurality of acquired projection areas. Since the plurality of light source mechanisms may be arranged on the 3D printer in a certain rule, the plurality of projection areas may also be arranged in a certain rule, and when determining the overlapping areas of the plurality of projection areas, the positional relationship of the plurality of projection areas may be determined first. If the coordinate parameters of the plurality of projection areas are obtained in the previous step, the position of the plurality of projection areas may be determined according to the coordinate parameters of the plurality of projection areas in this step, for example, when the dimensions of the projection areas of the light source mechanism are 1920×1080, the coordinates of the projection area 1 corresponding to the light source mechanism 1 are (0, 0), the coordinates of the projection area 2 corresponding to the light source mechanism 2 are (1920,0), and it may be determined that the projection area 2 is located in the X-axis positive direction of the projection area 1 and is adjacent to the projection area 1, that is, the light source mechanism 2 is located in the X-axis positive direction of the light source mechanism 1 and is adjacent to the light source mechanism 1; if the coordinates of the projection area 4 corresponding to the light source unit 4 are (0,1080), it can be determined that the projection area 4 is located in the Y-axis positive direction of the projection area 1 and adjacent to the projection area 1, that is, the light source unit 4 is located in the Y-axis positive direction of the light source unit 1 and adjacent to the light source unit 1. The above examples including specific numerals do not consider the width of the overlapping region, and in practice, after considering the width of the overlapping region, the coordinates of the projection region 2 corresponding to the light source unit 2 adjacent to the light source unit 1 in the positive X-axis direction may be (1900,0), and the coordinates of the projection region 4 corresponding to the shutdown 4 adjacent to the light source unit 1 in the positive Y-axis direction may be (0,1060), where the width of the overlapping region is 20. The coordinates are identified by the specifications of the pixels of the light source unit.

Step S306, according to the position relation, respectively determining the overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed.

In this step, when there is an overlapping area between each of the plurality of projection areas and the surrounding adjacent area, the overlapping areas between each of the plurality of projection areas and the surrounding adjacent area may be sequentially determined in accordance with a predetermined processing order. The projection area to be processed may be any one of a plurality of projection areas, and the other projection areas may include areas adjacent to the projection area to be processed. For example, when the 3D printer includes the light source mechanism 1 to the light source mechanism 9, the light source mechanism 1 to the light source mechanism 9 respectively correspond to the projection area 1 to the projection area 9, a predetermined processing sequence may be set to sequentially determine overlapping areas of the projection area 1 to the projection area 9 adjacent to the periphery, and in the processing process, the overlapping area of the projection area 1 and the projection area adjacent to the periphery may be determined first, where the projection area 1 is the projection area to be processed, and the projection area adjacent to the projection area 1 around the projection area 1 is other projection area.

In step S306, the overlapping area is processed to make the light sources at any position of the plurality of projection areas uniform.

In this step, since the plurality of light source units project images onto the polymerizable liquid, the overlapping area is projected by the plurality of light source units at the same time, if the light intensity of the projected area is uniform when the light source units project, the light intensity projected on the web will be uneven, and the light intensity of the overlapping area will be several times the light intensity of the non-overlapping area, resulting in uneven morphology of the solid or semi-solid polymer formed, and finally causing problems in the printed object. Therefore, after the overlapping areas of the projection areas to be processed and surrounding adjacent areas in the plurality of projection areas are respectively determined, the overlapping areas can be processed, so that the light sources at any position in the plurality of projection areas are consistent, and the solid or semi-solid form formed by 3D printing can be more uniform.

The light sources of the whole projection breadth formed by the plurality of projection areas are consistent, and the relevant parameters such as gray scale, illuminance, light intensity and the like can be consistent. Specifically, the current of the light source mechanism can be controlled to enable the light source mechanism to emit light with different light intensities in different areas, so that the light intensity projected by the light source mechanism in the overlapped area is lower than the light intensity of the non-overlapped area, and the overlapped area is processed to enable the light intensity of any position of the plurality of projected areas to be consistent; and a light-transmitting screen capable of absorbing light intensity can be arranged between the light source mechanism and the printing area, and the light intensity projected in the overlapping area is lower than that in the non-overlapping area by controlling the light-transmitting screen to absorb light in different areas, so that the overlapping area is processed, and the light intensity of any position of the plurality of projection areas is consistent. The method of processing the overlapping region is not limited in this step, as long as the light sources at any position of the plurality of projection regions can be made uniform.

Through the steps, the purpose of sequentially determining the overlapping areas of the respective projection areas of the light source mechanisms according to the preset sequence can be achieved, so that the technical effect of adaptively determining the overlapping areas of the respective projection areas of the light source mechanisms is achieved, and the technical problem that the overlapping areas among the light source mechanisms cannot be adaptively determined in the related art is solved.

As an alternative embodiment, the overlapping areas of the projection area to be processed and other projection areas in the plurality of projection areas are respectively determined according to the predetermined processing sequence according to the positional relationship, and the following steps are implemented: confirming that the first projection area in the projection areas to be processed is the projection area to be processed according to a preset processing sequence; determining the area adjacent to the projection area to be processed in the preset direction as other projection areas according to the position relation, wherein the preset direction is related to the preset processing sequence; an overlap region of the projection region to be processed and other projection regions is determined.

Optionally, in determining the overlapping areas of the projection area to be processed and the other projection areas in the plurality of projection areas according to the predetermined processing sequence, the step of determining the overlapping areas of the projection area to be processed and the other projection areas may be: determining the projection area which is not processed yet, wherein the projection area which is arranged at the head in a preset processing sequence is the projection area to be processed, namely the projection area to be processed this time; on the basis of the determined projection area to be processed, the area which is positioned in the predetermined direction of the projection area to be processed and is adjacent to the projection area to be processed can be determined to be other projection areas according to the position relation of the plurality of projection areas, and further, the overlapping area of the projection area to be processed and the other projection areas can be determined.

As a specific embodiment, fig. 4 is a schematic diagram of an array arrangement of a plurality of projection areas provided in an alternative embodiment of the present invention, as shown in fig. 4, the 3D printer may include 9 light source mechanisms arranged in an array, and the predetermined direction may be 360 ° all directions on a plane, that is, considering that all projection areas adjacent to the projection area to be processed are gas projection areas, specifically, when the projection area to be processed is the projection area 5, other projection areas may include a projection area 1, a projection area 2, a projection area 3, a projection area 4, a projection area 6, a projection area 7, a projection area 8, and a projection area 9 adjacent to the projection area 5, where an overlapping area of the projection area 1 and the projection area 5 is an area at a left upper corner of the projection area 5, an overlapping area of the projection area 2 and the projection area 5 is an area above the projection area 5, an overlapping area of the projection area 3 and the projection area 5 is an area at a right upper corner of the projection area 5, and when considering that when the projection area to be processed is the projection area 5, other projection areas may include a projection area 1, a projection area 2, a projection area 3, a projection area 4, a projection area 3 adjacent to the projection area, a projection area 7, a projection area 8, and a projection area 9 overlapping area 5 are an overlapping area of the projection area 5 and a projection area 5 is an overlapping area at a left corner of the projection area 5, and an overlapping area 5. In the case that the predetermined direction is 360 ° all directions on the plane, the predetermined processing order may be any order, and when the predetermined processing order is any order, the present invention can ensure that all the overlapping areas are determined.

As an alternative embodiment, determining, as the other projection area, an area located adjacent to the projection area to be processed in the predetermined direction according to the positional relationship may be achieved by: the predetermined direction comprises a first direction and a second direction, and when a first adjacent area adjacent to the projection area to be processed exists in the first direction of the projection area to be processed, other projection areas are determined to comprise the first adjacent area according to the position relation; determining that the other projection areas include a second adjacent area in the case that there is a second adjacent area adjacent to the projection area to be processed in the second direction of the projection area to be processed; determining that other projection areas comprise a third adjacent area under the condition that the third adjacent area adjacent to the projection area to be processed exists in the first direction of the second adjacent area; in the case where there is a fourth adjacent region adjacent to the projection region to be processed in the opposite direction to the first direction of the second adjacent region, it is determined that the other projection region includes the fourth adjacent region.

The predetermined direction may be 360 ° full direction on the plane in the above alternative embodiment, but there may be a problem of repeatedly calculating the overlapping area, for example, the predetermined processing sequence is: when the projection area to be processed is the projection area 1, the projection area 2, and the projection area 3, … …, the overlapping area of the projection area 1 and the projection area 2 is calculated, and then when the projection area to be processed is the projection area 2, the overlapping area of the projection area 1 and the projection area 2 is calculated again, and there is a problem that the overlapping area is repeatedly calculated.

In order to reduce the amount of calculation and prevent the overlap area from being repeatedly calculated, when determining the overlap area of a projection area (i.e., a projection area to be processed) of a plurality of projection areas and a surrounding adjacent projection area, only the overlap area of the adjacent projection area in the predetermined direction of the projection area and the projection area may be determined, and it is not necessary to determine the overlap area of the projection area and the adjacent projection area in all directions and the projection area. Alternatively, the predetermined direction may include a first direction and a second direction, the first direction may be perpendicular to the second direction, and the determining the other projection area may include: a first adjacent region adjacent to the projection region to be processed in a first direction of the projection region to be processed, a second adjacent region adjacent to the projection region to be processed in a second direction of the projection region to be processed, a third adjacent region adjacent to the projection region to be processed in the first direction of the second adjacent region, and a fourth adjacent region adjacent to the projection region to be processed in a direction opposite to the first direction of the second adjacent region. For example, the predetermined directions may include an X direction (first direction) and a Y direction (second direction) as shown in fig. 4, and for the projection area 2, there are a first adjacent area (projection area 3), a second adjacent area (projection area 5), a third adjacent area (projection area 6), and a fourth adjacent area (projection area 4) for the projection area 2, so the other projection areas of the projection area 2 may include four adjacent areas located in the four directions described above.

It should be noted that the other projection areas may include the four adjacent areas in the four directions, but need not include the four adjacent areas in the four directions. It is conceivable that if a certain projection area is at the boundary of the arrangement of the plurality of projection areas, there may not be four adjacent areas located in four directions, and at this time, the other projection areas corresponding to this projection area may include only adjacent areas existing in some directions. For example, the predetermined directions may include an X direction (first direction) and a Y direction (second direction) as shown in fig. 4, and for the projection area 1, there are a first adjacent area (projection area 2), a second adjacent area (projection area 4), and a third adjacent area (projection area 5), but since there is no other projection area to the left of the projection area 4, there is no fourth adjacent area for the projection area 1, and at this time, the other projection areas of the projection area 1 may include only the first adjacent area (projection area 2), the second adjacent area (projection area 4), and the third adjacent area (projection area 5), and not include the fourth adjacent area.

That is, in determining the overlapping area of a certain projection area among the plurality of projection areas and the surrounding adjacent projection area, it is only necessary to determine the overlapping area of the adjacent projection area located in the predetermined direction of the projection area and the projection area, and it is not necessary to determine the overlapping area of the projection area and the adjacent projection area in all directions and the projection area. In the step of determining the overlapping areas of the projection area to be processed and other projection areas in the plurality of projection areas according to the predetermined processing sequence, the method provided in the alternative embodiment may be repeated continuously, and the plurality of projection areas may be sequentially used as the projection area to be processed, and the overlapping areas of the projection area to be processed and other projection areas may be determined.

As a specific example, as shown in fig. 4, a predetermined processing sequence may be set as: the projection area 1, the projection area 2, the projection area 3 … … project the area 9, and the predetermined direction associated with the predetermined process sequence may include an X direction and a Y direction as shown in fig. 4.

The projection area to be processed comprises 9 unprocessed projection areas, the projection area 1 can be processed according to a preset processing sequence, the projection area 1 is the projection area to be processed, other projection areas comprise a projection area 2, a projection area 4 and a projection area 5 which are positioned in the X direction and the Y direction of the projection area 1, namely, the overlapping areas of the projection area 2, the projection area 4 and the projection area 5 and the projection area 1 are respectively determined; then the projection area 2 can be processed according to the processing sequence, the projection area 2 is the projection area to be processed, and other projection areas comprise a projection area 3, a projection area 5, a projection area 6 and a projection area 4; similarly, the projection area 3, the projection area 4, the projection area 5, the projection area 6, the projection area 7, the projection area 8, and the projection area 9 may be sequentially processed.

The following specifically describes a processing method for determining an overlapping area between a certain projection area and another projection area, taking the processing of the projection area 1 as an example:

First, in determining the overlapping area of the projection area 1 and the surrounding adjacent area, it may be determined that other projection areas corresponding to the projection area 1 include projection areas adjacent to the projection area 1 in a predetermined direction: as shown in fig. 4, the projection area 2 adjacent to the projection area 1 in the first direction, the projection area 4 adjacent to the projection area 1 in the second direction, and the projection area 5 adjacent to the projection area 1 in the first direction of the projection area 4. Since there is no projection area on the left side of the projection area 4, there is no projection area adjacent to the projection area 1 in the opposite direction to the first direction of the projection area 4, so that only 3 projection areas, i.e., the projection area 2, the projection area 4, and the projection area 5, are included in the other projection areas corresponding to the projection area 1.

Next, the overlapping area of the projection area 1 with other projection areas may be determined, and fig. 5 is a schematic diagram of an overlapping area of a projection area according to an alternative embodiment of the present invention, where, as shown in fig. 5, the projection area 2, the projection area 4, and the projection area 5 all generate an overlapping area with the projection area 1, and a square with a rectangular shadow area on the right side of the projection area 1 and a small square with a lower right corner in fig. 5 is the overlapping area of the projection area 2 and the projection area 1; the small square of the rectangular shadow area below the projection area 1 plus the lower right corner is the overlapping area of the projection area 4 and the projection area 1; the small square in the lower right corner of the projection area 1 is the overlapping area of the projection area 5 and the projection area 1.

The following will also specifically describe a processing method for determining an overlapping area of a certain projection area and another projection area, taking the processing of the projection area 5 as an example:

first, in determining the overlapping area of the projection area 5 and the surrounding adjacent area, it may be determined that other projection areas corresponding to the projection area 5 include projection areas adjacent to the projection area 5 in a predetermined direction: as shown in fig. 4, the projection area 6 adjacent to the projection area 5 in the first direction (X direction), the projection area 8 adjacent to the projection area 5 in the second direction (Y direction), the projection area 9 adjacent to the projection area 5 in the first direction of the projection area 8, and the projection area 7 adjacent to the projection area 5 in the opposite direction of the first direction of the projection area 8, the projection area 5 includes 4 projection areas, that is, the projection area 6, the projection area 7, the projection area 8, and the projection area 9, among other projection areas corresponding to the projection area 5.

Next, the overlapping area of the projection area 5 with other projection areas may be determined, fig. 6 is a schematic diagram of the overlapping area of another projection area provided according to an alternative embodiment of the present invention, where, as shown in fig. 6, the projection area 7, the projection area 8 and the projection area 9 all generate the overlapping area with the projection area 5, the rectangular shadow area on the right side of the projection area 5, the small square of the blank on the upper right corner and the small square of the blank on the lower right corner of the projection area 5 are the overlapping area of the projection area 6 and the projection area 5 in fig. 6, and when calculating the overlapping area of the projection area 6 and the projection area 5, only the rectangular area with the shadow may be calculated (when the projection area 3 is processed, the overlapping area between the projection area 3 and the projection area 5 has been determined to be the small square area of the blank on the upper right corner of the projection area 5); the rectangular shadow area below the casting area 5, the small square of the left lower corner shadow and the small square of the right lower corner shadow are the overlapped areas of the casting area 8 and the casting area 5, and when the overlapped areas of the casting area 8 and the casting area 5 are calculated, only the rectangular area with shadow can be calculated; the small square in the lower left corner of the projection area 5 is the overlapping area of the projection area 7 and the projection area 5; the small square in the lower right corner of the projection area 5 is the overlap area of the projection area 9 and the projection area 5.

It should be noted that the method provided in this alternative embodiment is not limited to a certain fixed processing sequence, and is not limited to a certain predetermined direction, and may have a plurality of predetermined processing sequences, or may have a plurality of predetermined directions. However, the predetermined direction and the predetermined processing order are associated, and when the predetermined processing order is changed, the predetermined direction is changed accordingly. It is conceivable that there are other predetermined processing orders and predetermined directions, for example, the predetermined processing order may be the projection area 9, the projection area 8 … …, the predetermined direction corresponding to this predetermined processing order may be the opposite direction of the first direction being the X direction, and the second direction being the opposite direction of the Y direction; the predetermined processing sequence may also be a projection area 1, a projection area 4, a projection area 7, a projection area 2, a projection area 5, a projection area 8, a projection area 3, a projection area 6, a projection area 9, and the predetermined direction corresponding to the predetermined processing sequence may be an X direction and a Y direction, except that the first direction is the Y direction and the second direction is the X direction. Alternatively, the above-described scheme using the projection region 1 as the starting point and the scheme using the projection region 9 as the starting point may be combined, and the processing may be started from the projection region 1 and the projection region 9 at the same time until the processing is completed when reaching the projection region 5.

As an alternative embodiment, the first adjacent region is the next projection region to be processed of the projection regions to be processed in the predetermined processing sequence.

Alternatively, the association of the predetermined processing order and the predetermined direction may be expressed as: in the predetermined processing sequence, the first adjacent region may be a projection region to be processed next to the projection region to be processed. That is, the first adjacent area of the projection area to be processed is the next projection area to be processed. For example, the predetermined processing order is: the projection areas 1, 2, and 3 … … project area 9, where the predetermined directions associated with the predetermined processing sequence may include an X direction and a Y direction as shown in fig. 4, the projection area 2 is the first adjacent area of the projection area 1, so the projection area 2 is the next projection area to be processed.

As an alternative embodiment, determining the positional relationship of the plurality of projection areas includes: determining coordinates of reference points of each of the plurality of projection areas; and determining the position relation of the plurality of projection areas according to the coordinates of the reference points of the plurality of projection areas.

Alternatively, the positional relationship between the plurality of projection areas may be determined by acquiring the coordinates of the reference points of the respective plurality of projection areas and based on the positions indicated by the coordinates. The reference point may be any fixed point in the plurality of projection areas, may be a center point of the projection area, or may be a point in an upper left corner, but it is necessary to determine that the reference points of the plurality of projection areas are consistent, and if the center point of the projection area is selected as the reference point, the coordinates of the center point are obtained when the coordinates of each projection area are obtained.

As an alternative embodiment, it may further include: determining the position of an overlapping area of a projection area to be processed and other projection areas; the positions of the overlapping areas are respectively corresponding to the light source mechanisms corresponding to the projection areas to be processed and the light source mechanisms corresponding to other projection areas.

Alternatively, after the overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas are respectively determined according to the predetermined processing sequence, the positions of the overlapping areas may be specifically calculated, and the positions of the overlapping areas may also be respectively associated with the light source mechanisms, that is, the overlapping areas may be respectively associated with the light source mechanisms corresponding to the plurality of projection areas that generate the overlapping areas, that is, the overlapping areas may be respectively associated with the light source mechanisms corresponding to the projection areas to be processed, and the overlapping areas may be respectively associated with the light source mechanisms corresponding to the other projection areas. Specifically, after determining the positions of the overlapping regions of the projection region 1 and the projection region 2, the positions of the overlapping regions may be respectively associated with the light source mechanisms 1 corresponding to the projection region 1 and the light source mechanisms 2 corresponding to the projection region 2; after determining the positions of the overlapping areas of the projection area 1 and the projection area 5, the positions of the overlapping areas may be respectively associated with the light source mechanisms 1 corresponding to the projection area 1 and the light source mechanisms 5 corresponding to the projection area 5.

Alternatively, the position of the overlapping area may include the coordinate parameter of the overlapping area, and in the case where the plurality of projection areas are rectangular, the coordinate parameter of the overlapping area may be recorded by the same method as recording the coordinate parameter of the projection area, specifically, a certain vertex of the rectangle may be used as the position point of the overlapping area, the coordinate of the position point on the web may be used as the coordinate parameter of the overlapping area, or the center of the rectangle may be used as the position point of the overlapping area, but the recording method of the coordinate parameter of the overlapping area should be consistent with the recording method of the coordinate parameter of the projection area. That is, if the coordinate parameters of the projection area are recorded with the upper left corner of the projection area as the position point, the coordinate parameters of the overlap area are also recorded with the upper left corner of the overlap area as the position point. The position of the overlapping region may also include the position of the overlapping region in the light source mechanism, and specifically may be a left overlapping region, a right overlapping region, an upper overlapping region, a lower overlapping region, an upper left overlapping region, or the like of the light source mechanism, for example, the overlapping region of the projection region 1 and the projection region 2 in fig. 5, the right overlapping region of the light source mechanism 1 when corresponding to the light source mechanism 1, and the left overlapping region of the light source mechanism 2 when corresponding to the light source mechanism 2.

Specifically, a coordinate system may be established in the X-direction and the Y-direction shown in fig. 5, and the coordinate parameters of the projection area and the coordinate parameters of the overlap area are expressed in the same set of coordinate systems, to provide a formula for calculating the coordinate parameters of the overlap area according to the coordinate parameters of the projection area:

X_Out＝X2；

Y_Out＝Y2；

Overlay_Width＝X1+Projector_Width-X2；

Overlay_Height＝Y1+Projector_Height-Y2；

wherein X_Out is the X coordinate of the overlapping area, Y_Out is the Y coordinate of the overlapping area; x2 is the X coordinate of the adjacent region, Y2 is the Y coordinate of the adjacent region; overlay_width is the Width of the overlapping area of the two projection areas, and overlay_height is the Height of the overlapping area of the two projection areas; x1 is the X coordinate of the projection area to be processed, Y1 is the Y coordinate of the projection area to be processed; projector_Width is the light source mechanism resolution Width and Projector_Width is the light source mechanism resolution height. The coordinates of the projection area and the overlap area may be coordinates of any point in the area, but the projection area and the overlap area should be selected to be identical, and when the projection area selects the coordinates of the point in the upper left corner as the area coordinates, the overlap area should also select the coordinates of the point in the upper left corner as the area coordinates, and cannot select the coordinates of the point in the upper right corner as the area coordinates.

With the upper left corner of the projection area 1 shown in fig. 5 as the origin of coordinates, when the dimensions of the projection area are calculated in resolution dimensions and are 1920×1080 each, the coordinates of the overlapping area of the projection area 1 and the projection area 2 can be calculated by the above formula: acquiring coordinates (0, 0) of the projection area 1 and coordinates (1900,0) of the projection area 2, and calculating to obtain coordinates (1900,0) of an overlapping area, wherein the width of the overlapping area is 0+1920-1900=20, and the height of the overlapping area is 0+1080-0=1080; the overlapping area of the projection area 1 and the projection area 5 can also be calculated with the above formula: the coordinates (0, 0) of the projection area 1 and the coordinates (1900,1060) of the projection area 5 are obtained, and the coordinates (1900,1060) of the overlapping area can be calculated, the width of the overlapping area is 0+1920-1900=20, and the height of the overlapping area is 0+1080-1060=20.

As an alternative embodiment, processing the overlapping area to make the light sources uniform at any position of the plurality of projection areas may include: acquiring an image to be projected; dividing an image to be projected according to overlapping areas of the plurality of projection areas and other projection areas respectively to obtain a plurality of projection image blocks; determining projection image blocks corresponding to the light source mechanisms respectively; and respectively transmitting the plurality of projection image blocks to corresponding light source mechanisms, wherein the plurality of light source mechanisms are used for respectively projecting the respective corresponding projection image blocks to the construction surface.

Alternatively, when 3D printing is performed to print each slice model, a projection image may be generated according to the shape of the slice model, and the projection image may be transmitted to the light source mechanism; the light source mechanism can project a projected image on a plane formed by the polymerizable liquid, and the polymerizable liquid is cured to form a solid or semi-solid polymer between the forming platform and the construction surface under the irradiation of light emitted by the light source mechanism, so that a model matched with the projected image is formed. Because the 3D printing can be performed by adopting a plurality of light source mechanisms, the image to be projected needs to be processed, the complete image to be projected is divided into a plurality of projection image blocks which are required to be projected by the light source mechanisms, and each light source mechanism projects the corresponding projection image block to the construction surface. After determining the overlapping area of the projection areas of the light source mechanisms arranged on the 3D printer, the overlapping area projects the same image, the complete image to be projected can be segmented according to the overlapping area, and the segmented multiple projected image blocks are sent to the corresponding light source mechanisms, so that the image projected by the last multiple light source mechanisms is the complete image to be projected.

Specifically, as shown in fig. 5, the rectangular shadow portions where the projection area 1 and the projection area 2 overlap will project the same image, and the small square area in the lower right corner of the projection area 1 will project the same image as the lower left corner area of the projection area 2, the upper right corner area of the projection area 4, and the upper left corner area of the projection area 5.

It should be noted that, in some application scenarios, the projection image block corresponding to each light source mechanism may be directly transferred to the corresponding light source mechanism, and the light source mechanism may perform exposure according to the received projection image block at this time, but in other application scenarios, the projection image block needs to be transferred to the light source mechanism through the screen separator, so that the light source mechanism performs exposure according to the received projection image block. The split screen device projects images corresponding to the whole canvas, namely, the plurality of projection image blocks are spliced in a non-overlapping manner, so that the plurality of projection image blocks are required to be combined together in a mode of adapting to the whole canvas, the combined images can be transmitted to the corresponding light source mechanisms through the split screen device, and then the light source mechanisms are used for exposure.

According to the coordinates, width and height of the plurality of projection areas, a plurality of projection image blocks can be filled in the canvas, so that a combined canvas is obtained, and the method for combining the plurality of projection image blocks in the screen divider can be provided:

(1) Newly creating canvas with resolution ratio after splicing a plurality of projection image blocks;

(2) Acquiring coordinates of a light source mechanism corresponding to the currently processed projection image block, and Row numbers (Row) and column numbers (Col) of the light source mechanism in array arrangement of a plurality of light source mechanisms;

(3) Because the currently processed projection image blocks are divided into an overlapping area and a non-overlapping area, the coordinates of each area on a newly built canvas can be calculated according to the coordinates, the line numbers and the column numbers of the light source mechanisms corresponding to the plurality of projection image blocks;

(4) And filling the canvas according to the coordinates of the projected image blocks on the newly built canvas, so that a plurality of projected image blocks are combined in the screen separator.

The formula for calculating the coordinates of a certain area of the projected image block on the newly created canvas is as follows:

X_Out＝Sub_Pos_X-Proj_Pos_X+Col*Projector_Width；

Y_Out＝Sub_Pos_Y-Proj_Pos_Y+Row*Projector_Height；

wherein X_Out is the X coordinate of the projected image block on the newly created canvas, and Y_Out is the Y coordinate of the projected image block on the newly created canvas; sub_pos_x is the X-coordinate of this region in the projected image block, sub_pos_y is the Y-coordinate of this region in the projected image block, proj_pos_x is the X-coordinate of the light source mechanism corresponding to the projected image block, and proj_pos_y is the Y-coordinate of the light source mechanism corresponding to the projected image block; projector_Width is the light source mechanism resolution Width and Projector_Width is the light source mechanism resolution height.

Specifically, fig. 7 is a schematic diagram of merging of multiple projected image blocks, as shown in fig. 7, in which two rectangular shadow portions are overlapping areas in the projected image block 1 corresponding to the light source mechanism 1 corresponding to the projected area 1 and overlapping areas in the projected image block 2 corresponding to the light source mechanism 2 corresponding to the projected area 2, respectively, where the projected image block 1 and the projected image block 2 are merged according to an alternative embodiment of the present invention. When the size of the projection area is 1920×1080, the width of the overlap area is 20, the upper left corner of the area is used as the area coordinate, and the coordinate system is established in the direction shown in fig. 7 with the upper left corner of the projection image block 1 as the origin of the coordinate, the X coordinate is 1920-1900+1×1920=1940 when the coordinates of the non-overlap area of the projection image block 2 on the combining canvas are calculated by using the calculation formula described above, wherein 1920 is the X coordinate of the non-overlap area of the projection image block 2 at the time of actual projection, that is, the X coordinate of the non-overlap area of the projection image block 2 when the projection image block 1 and the projection image block 2 overlap; 1900 is coordinates of the light source mechanism 2 corresponding to the projection image block 2; 1 means that the light source mechanism 2 is located in column 1; the Y coordinate is 0. The row number of the light source unit 1 is 0, and the row number of the light source unit 2 is 1.

As an alternative embodiment, before the plurality of projected image blocks are sent to the corresponding light source mechanisms, respectively, the method may further include: and carrying out image information gradual change processing on the image overlapping areas in the plurality of projection image blocks.

The plurality of image blocks may be divided into an overlapping area projection image and a non-overlapping area projection image, wherein the non-overlapping area projection image is not required to be subjected to image information processing, and only the overlapping area projection image is required to be subjected to image information processing. The present alternative embodiment proposes that transition parameters corresponding to a plurality of light source mechanisms may be determined first, then, according to the transition parameters corresponding to the light source mechanisms, image information gradient processing is performed on a projection image of an overlapping region (that is, an image located in the overlapping region in a plurality of projection image blocks), and then, the image information gradient processing is sent to the corresponding light source mechanisms for projection.

Alternatively, since the plurality of light source mechanisms project images onto the construction surface, the overlapping area will be projected by the plurality of light source mechanisms simultaneously, if the light intensity of the projected area is uniform when the light source mechanisms project, the light intensity projected on the web will be non-uniform, and the light intensity of the overlapping area will be several times the light intensity of the non-overlapping area, resulting in problems with the printed object. When 3D printing is performed using a plurality of light source mechanisms, it is necessary to process the image to be projected so that the light intensity of the image appearing on the final web is uniform. The image information may reflect the characteristics of the image in a matrix form, and the above description only exemplifies the light intensity in the image information, and the image information may be related parameters such as gray scale, illuminance, and the like, in addition to the light intensity. And carrying out gray scale processing on the edge of the projection image block of each light source mechanism based on the image splitting boundary, so that the image information of the projection image block of each light source mechanism in the overlapping area is stepwise gradual change. For example, the image information value decreases in a direction approaching the edge of the overlap region (the inner side edge side of each projected image block); the image information value increases in a direction approaching the edge of the overlap region, etc. in accordance with the form of gradation. It should be noted that the gradual change is not limited to the increment or decrement, and other gradual change forms are also possible, and the above two gradual change forms are only used for exemplary purposes.

As an alternative embodiment, performing image information gradation processing on overlapping areas in a plurality of projected image blocks includes: performing image processing on an image overlapping region in a projection image block to be processed in a plurality of projection image blocks so as to divide the image overlapping region into a plurality of subareas according to image information; the image information superposition values of the plurality of projection image blocks in the subareas fall into a preset range.

Alternatively, the overlapping region may be divided into a number of sub-regions, with which, for the N projected image blocks to be stitched, any one sub-region has a corresponding sub-region overlapping with it in all projected image blocks. The image information superposition values of the N superposition subareas of the N projection image blocks fall into a preset range. The preset range may include a plurality of values, or may be only one value. Taking the gray scale of an 8-bit image as an example, the superimposed gray scale value may be set to be between 0 and 255, or may be set to a value greater than 255, for example, 260. The overlapping gray value is set to be larger than 255, so that the influence of the interval of the lighting time of the hair machine on the splicing can be further reduced.

As an alternative embodiment, when the number of the light source mechanisms corresponding to the image overlapping area is the first preset number, the image information value of the image overlapping area is decreased stepwise along the third direction and is kept unchanged along the fourth direction; the third direction is the splicing direction of the projection image block to be processed and is the direction of the inner side of the projection image block to be processed to the edge side; the third direction and the fourth direction are perpendicular; when the number of the light source mechanisms corresponding to the image overlapping areas is a second preset number, the image information values of the image overlapping areas are in step decrease along a third direction; wherein the second preset number is greater than the first preset number.

Optionally, the number of light source mechanisms corresponding to the overlapping region is the number of light source mechanisms projected toward the overlapping region. When one-dimensional splicing is performed, the number of light source mechanisms corresponding to the overlapping area is 2. When two-dimensional splicing is performed, there are overlapping regions with the number of corresponding light source mechanisms being 4, and overlapping regions with the number of corresponding light source mechanisms being 2. The first preset number may be 2 and the second preset number may be 4.

When the image information gradient processing is performed on the projection image of the overlapping area, the overlapping area can be divided into two types according to the number of the plurality of projection areas corresponding to the overlapping area, and the two types of overlapping areas can be respectively: the overlapping area formed by overlapping the 2 projection areas and the overlapping area formed by overlapping the 4 projection areas can be subjected to image information gradation processing for the two types of overlapping areas, respectively. In calculating the position of the overlapping region, as shown in fig. 5, the overlapping region of the projection region 1 and the projection region 2 is calculated, and a small square region in the lower right corner of the projection region 1 is included, that is, in calculating the position of the overlapping region formed by overlapping 2 projection regions, the resulting overlapping region includes an overlapping region formed by overlapping 4 projection regions. Therefore, when classifying the overlapping regions, the position of the overlapping region formed by overlapping the 2 projection regions can be calculated by subtracting the position of the overlapping region formed by overlapping the 4 projection regions from the position of the overlapping region formed by overlapping the 2 projection regions calculated previously.

Specifically, when the image information gradation processing is performed in the overlapping area formed by overlapping 2 projection areas, the overlapping area corresponds to 2 projection image blocks, and for convenience of explanation, the 2 projection image blocks are named as a first projection image block and a second projection image block. In the case where the first projected image block is relatively on the left side and the second projected image block is relatively on the right side, the overlapping areas of the images are respectively on the right side of the first projected image block and the left side of the second projected image block. For the first projected image block, the image information value of the overlap region decreases from left to right (the inner side edge side of the projected image block). For the second projected image block, the image information value of the overlapping area decreases from right to left (the inner side edge side of the projected image block). It should be noted that the decrementing does not refer to strictly monotonic decrementing alone, as long as the decrementing is satisfied. By means of the splicing, the influence caused by splicing dislocation can be reduced.

When the image information gradation processing is performed in the overlapping area formed by overlapping 4 projection areas, the overlapping area corresponds to 4 projection image blocks, and for convenience of explanation, the 4 projection image blocks are named as a third projection image block, a fourth projection image block, a fifth projection image block, and a sixth projection image block. If the third projected image block is at the upper left, the fourth projected image block is at the upper right, the fifth projected image block is at the lower left, and the sixth projected image block is at the lower right, then the overlap region is at the lower right corner of the third projected image block, at the lower left corner of the fourth projected image block, at the upper right corner of the fifth projected image block, and at the upper left corner of the sixth split region. Therefore, the image information value of the overlapping area of the third projected image block is stepwise decreased from left to right and from top to bottom. Similarly, the image information value of the overlapping area of the fourth projection image block is gradually decreased from right to left and from top to bottom; the image information value of the overlapping area of the fifth projection image block is gradually decreased from left to right and from bottom to top; the image information value of the overlapping area of the sixth projection image block is stepwise decreased from right to left and from bottom to top.

As an alternative embodiment, the trend of the first image information distribution is in a mirror image relationship or an approximate mirror image relationship with the trend of the second image information distribution; the first image information is distributed as the image information of the image overlapping area of any one of the adjacent projected image blocks; the second image information distribution is the image information distribution of the image overlapping area of another projection image block in the adjacent projection image blocks; the inversion axis of the mirror image relationship is determined according to the position of either projected image block and the position of the other projected image block.

As an alternative embodiment, the first image information is mirrored or approximately mirrored with the second image information; the first image information is the image information of the overlapping area of any one of the adjacent divided images; the second image information is the image information of the overlapping area of the other divided image in the adjacent divided images; the inversion axis of the mirror image relationship is determined according to the position of any one divided image and the position of another divided image.

Alternatively, taking the left-right mirror image as an example, if the trend of the distribution of the first divided image information on the left side is changed from large to small, the trend of the distribution of the second divided image information on the right side is changed from small to large. Similarly, if the trend of the first divided image information on the left side is changed from large to small, the trend of the second divided image information on the right side is changed from small to large. The image information at the right boundary of the left image and the image information at the left boundary of the right image are in a mirror image relationship, and the change trend of the image information distribution is also in a mirror image relationship. The approximate mirror relationship means that the change trend can be partially in mirror relationship, and the change trend can be partially in non-mirror relationship, and the change trend can also be in non-strict mirror relationship.

As a specific embodiment, taking image information as a gray scale example, the number of light source mechanisms is at least 2, and the method for projecting the light source mechanisms to the printing surface specifically includes: physically splicing the light source mechanisms; splitting the integral projection image of the physically spliced light source mechanisms to obtain a plurality of projection sub-graphs corresponding to the number of the light source mechanisms; and then carrying out gray gradation processing on the overlapped area of each projection map. The method specifically comprises the steps of setting an image splitting boundary; and carrying out gray scale processing on the projected image edge of each light source mechanism based on the image splitting boundary, so that the gray scale of the projected image of each light source mechanism in the overlapping region is gradually decreased towards the direction close to the edge of the overlapping region.

For example, the edge of the projected image of each light source mechanism is processed from the image splitting boundary, the step gray scale calculation is performed on the pixel projection image of the overlapping area, the gray scale of the overlapping area of each light source mechanism is gradually decreased (for example, the gray scale is gradually decreased or is not gradually decreased) from the center to the edge, meanwhile, the gradient superposition is satisfied in the decreasing process (that is, each time the gradient is gradually decreased, the gray scale values of the gradients are superimposed, the gradients are not emptied and are continuously superimposed), and the gray scale values of the gradient superposition can be a fixed value or can be in a certain value interval. In brief, taking an 8-bit image as an example, if the fixed value is 255, the gradation value after gradient superimposition is 250 is also acceptable, because the gradation values of 250, 255, 253 are all acceptable for the final printing effect. The processed images are spliced together normally, processed by an upper computer through image processing hardware and distributed to each appointed light source mechanism for drawing.

After the projection of each light source mechanism is processed by the steps, the projection image of each light source mechanism can be fused into a large-format projection image consistent with the initial projection image.

In a specific embodiment, gray scale processing is performed on the projected image edge of each light source mechanism based on the image splitting boundary, including: acquiring first pixel gray scale distribution of a projection image of each light source mechanism in an overlapping area from inside to outside and second pixel gray scale distribution of a projection image of an adjacent light source mechanism in the overlapping area from inside to outside; and determining gray superposition values of the superposition areas of the adjacent light source mechanisms based on the first pixel gray distribution and the second pixel gray distribution, and performing defect correction on the projection image of each light source mechanism according to the gray superposition values.

As a specific embodiment, the pixel points with a row and b rows on the row and column boundary of each light source mechanism are set as the overlapping area.

1. When one of the a and the b is 0, the projection splice of each light source mechanism is one-dimensional splice, namely, the projection area of each light source mechanism is overlapped with the projection areas of other adjacent light source mechanisms in a row a or a row b.

When b=0 is set in the same coordinate system, the maximum gray level of printing exposure is u, and the gray level distribution (i.e., the first pixel gray level distribution) from inside to outside of the projection area edge area of each light source mechanism is: a= { a ₁ ，a ₂ ，...，a _a-1 ，a _a And u.gtoreq.a.gtoreq.0, a being approximately a decreasing number of columns. The projection edge area of the adjacent light source mechanism is from edge to inner pixel gray scale distribution (namely second pixel gray scale distribution) as follows: a' = { a _a ，a _a-1 ，...，a ₂ ，a ₁ }. The gray-scale superposition value of the superposition area is p, namely: the p=a+a', and the p value is set according to the actual printing process.

On the one hand, the p value can be a fixed value, the light intensity of a non-overlapping area is set to be q, q+v is more than or equal to p and more than or equal to q-v, v represents the allowable error range of the gray stacking value, and the influence degree of the gray value difference on the actual printing effect can be selected. In other words, p may be directly equal to the light intensity q of the non-overlapping region, or may be slightly greater or slightly less than q.

On the other hand, p is not a fixed value, and p can be a plurality of values, but the value range of p is q+v not less than p not less than q-v, and v is selected according to the influence degree of the gray value difference on the actual printing effect. In other words, p is a value that fluctuates within a certain range, however, in actual printing formation, the difference in p does not significantly affect the uniformity of the printing effect.

The edge processing method can enable the light intensity of the overlapped area to be consistent or approximate to the light intensity of the non-overlapped area, lighten printing splicing marks and reduce the influence caused by splicing dislocation.

When the overlapping area is shifted from the a array in the same direction by 1 pixel due to stitching, namely the overlapping area: a= { a ₁ ，a ₂ ，...，a _a-1 And u is greater than or equal to A and greater than or equal to 0, A is approximately equal difference decreasing number column; a' = { a _a-1 ，...，a ₂ ，a ₁ }. The gradation superimposition value of the superimposition area changes: p=a+a'. I.e. about a_2-a_1 change relative to p, the gray scale of the non-overlapping region increases by a _a . When the number of items of the array a is enough and a _a When the pixel is sufficiently small, the pixel is shifted from the array a in the same direction, the influence on the superposition value of the gray is small, and the influence on the set superposition value P of the gray can be considered to be avoided.

When P=260 is set, the breadth A is spliced with the breadth B, the pixel arrangement of the breadth A is an arithmetic progression from left to right, the pixel arrangement of the breadth B is an arithmetic progression from right to left, and the gray sum after superposition is 260; the lateral direction is staggered by 1 pixel, and the difference between the maximum gray-scale superposition value of the superposition area and the gray scale of the pixel of the normal area is only a tolerance value. Similarly, when p=15 and 16 are set, the width A1 and the width A2 are transversely spliced, the pixel arrangement of the width A1 is in an arithmetic progression from left to right, the pixel arrangement of the width A2 is in an arithmetic progression from right to left, the gray sum after superposition is 15 or 16, the lateral direction is staggered by 1 pixel, and the gray superposition value of the superposition area is not greatly different from the gray of the pixels 15 and 16 of the normal area.

When the overlapping area is shifted from the a array in the vertical direction by 1 pixel due to stitching, that is, the overlapping of the edge pixels in the vertical direction of the overlapping area is changed, the non-edge pixels are kept consistent and unchanged. The edge pixel distribution of the vertically overlapping region is then: a "= { a ₁ ，a ₂ ，...，a _a-1 ，a _a And u is greater than or equal to a and greater than or equal to 0, which is approximately equal difference array; a' "= {0,..0, 0}; p '=a "+a'" =a ". At this time, P' is expressed as a sequence of decreasing gray scale approximation, and the macroscopic image is expressed as a diagonal line of one pixel width, and one vertical offset is causedAnd the gradual transition of each pixel is realized, no obvious step is generated after printing, and the smooth transition is realized.

If there is a pixel shift in the vertical direction at the splice, a natural gray-scale polyline transition occurs. In the actual 3D printing, the pixel offset part is shaped into smooth oblique lines, and obvious splicing marks are not displayed.

2. When the pixel points of the row a and the row b are not 0, the projection splicing of each light source mechanism is two-dimensional splicing, namely the projection area of each light source mechanism is overlapped with the quantity of the adjacent single light source mechanisms a and b. The effect of overlapping the projection edge of each light source mechanism with the edge of the adjacent single light source mechanism is the same as that of the one-dimensional overlapping, and when the projection edge is overlapped with the adjacent corners, the corners of the four single light source mechanisms are overlapped.

Pixels in the four corner overlapping areas are rectangular areas, the pixel setting in the areas is simultaneously influenced by the setting of an a-row b-column arithmetic progression, the pixel group of an e-row f-column is set according to the number of the pixels, the gray scale between adjacent pixels is approximately equal to the difference value c, the expected overlapping value of gray scales in a single plane is P1, and the pixel gray scale arrangement shown in the table 1 is formed:

TABLE 1 Pixel Gray arrangement

P1-c	P1-2c	.....	P1-(f-1)*c	P1-f*c
					P1-2c	.....
....				.....
					P1-(e-1)*c		.....	P1-(e+f-3)*c
P1-e*c		.....	P1-(e+f-3)*c	P1-(e+f-2)*c

In table 1, c=p/(e+f-1), since the gray value is an integer value, the c value can be properly adjusted, and the differences among several items in the array, which is approximately an arithmetic array, are changed to compensate.

When the pixel grayscales of the four corners are superimposed, the gray value distribution in the region is about 2P, as shown in table 2:

TABLE 2 superimposed arrangement of pixel grayscales

During projection, setting the gray-scale superposition value P1 in the region in a single breadth as half of the gray-scale superposition value P of the superposition region, namely p=2P1; the overlap value of the overlap region can be satisfied as a constant value p. The gray distribution in this region satisfies a two-dimensional approximate arithmetic distribution. For the dislocation of splicing, the arrangement mode can reduce the influence caused by the dislocation, similar to one-dimensional splicing change. For example, when the printed image is divided into 4 pieces of stitching, the original resolution is first disassembled and divided into 1/2/3/4 images. The edges of the image are subjected to the gradual change treatment and respectively sent to the corresponding single-frame surface light source mechanisms, and finally the image consistent with the initial projection image can be displayed.

As an alternative embodiment, before acquiring the image to be projected, it may further include: determining the running states corresponding to the light source mechanisms respectively according to the projection areas, wherein the running states comprise a normal state and an abnormal state; and under the condition that the running states corresponding to the light source mechanisms respectively comprise abnormal states, sending the running states corresponding to the light source mechanisms respectively to the cloud end, wherein the cloud end is used for determining the image to be projected according to the running states corresponding to the light source mechanisms respectively.

Optionally, when 3D printing is performed, the 3D model of the printed piece is built and the 3D model of the printed piece is sliced layer by layer, which may be performed at a cloud end of the 3D printing, the cloud end may also be referred to as a front end, the 3D printer may be referred to as a rear end, the front end may be other devices communicatively connected to the 3D printer, after slicing the 3D model of the printed piece layer by layer, the front end may send an image to be projected, which needs to be printed, of each layer to the 3D printer, and then the image is transmitted to the light source mechanism, so that the light source mechanism may project the projected image on a plane formed by polymerizable liquid, and the polymerizable liquid is cured under the irradiation of light emitted by the light source mechanism to form a model matched with the projected image. When the front end sends the image to be projected that each layer needs to be printed to the 3D printer, the size of the image to be projected this time needs to be determined according to the size of the breadth that the 3D printer can print, if the light source mechanisms in the plurality of light source mechanisms are abnormal, the image can not be projected to the polymerizable liquid, and then the size of the breadth that the 3D printer can print can also be changed. The 3D printer may determine the respective operation states of the plurality of light source mechanisms, that is, determine whether the plurality of light source mechanisms can normally project an image to the polymerizable liquid, and if the operation states of the light source mechanisms in the plurality of light source mechanisms are abnormal, the 3D printer may send the respective operation states of the plurality of light source mechanisms to the front end, and the front end may determine the image to be projected according to the operation states of the plurality of light source mechanisms.

As an alternative embodiment, before dividing the image to be projected according to overlapping areas of the plurality of projection areas with other projection areas, respectively, to obtain a plurality of projection image blocks, the method may further include: judging whether the size of the image to be projected is matched with the spliced area of the plurality of projection areas or not; under the condition that the size of the image to be projected is not matched with the spliced areas of the plurality of projection areas, determining the running states corresponding to the plurality of light source mechanisms respectively, and sending the running states to the cloud end, wherein the running states comprise a normal state and an abnormal state, and the cloud end is used for redetermining the image to be projected according to the running states corresponding to the plurality of light source mechanisms respectively.

Optionally, after receiving the image to be projected, the 3D printer may further determine whether an instruction sent by the front end to print the image to be projected matches its own status, and mainly determine whether the size of the image to be projected matches the area after the multiple projection areas are spliced, that is, determine whether the area after the multiple projection areas are spliced is greater than the size of the image to be projected. If the size of the image to be projected is larger than the spliced area of the plurality of projection areas, the fact that the light source mechanisms in the plurality of light source mechanisms are abnormal is indicated that the instruction of printing the image to be projected cannot be executed, at the moment, the 3D printer can confirm the running states corresponding to the light source mechanisms respectively and send the running states corresponding to the light source mechanisms to the front end, so that the front end can modify the image to be projected, and the image to be projected, which is sent to the 3D printer next time, is smaller than the printing breadth of the 3D printer.

As a specific embodiment, taking 9 light source mechanisms arranged in an array as shown in fig. 4 as an example, a method for confirming overlapping areas of light source mechanisms provided by the present invention is specifically described:

(1) And acquiring data information of the projection area 1, judging whether the projection area 2 exists in the X positive axis direction, and calculating the coordinates and the width of the upper left corner of the overlapping area of the projection area 1 and the projection area 2 according to the coordinates of the projection area 1 and the projection area 2 and the resolution of the light source mechanism, wherein the overlapping area information is respectively corresponding to the right overlapping data in the data structure of the light source mechanism 1 and the left overlapping data in the data structure of the light source mechanism 2.

(2) If the projection area 4 exists in the Y positive axis direction of the projection area 1, the coordinates and the height of the left upper corner of the overlapping area of the projection area 1 and the projection area 4 are calculated according to the coordinates of the projection area 1 and the projection area 4 and the resolution of the light source mechanism, and the overlapping area information is respectively corresponding to the lower overlapping data in the data structure of the light source mechanism 1 and the upper overlapping data in the data structure of the light source mechanism 4.

(3) Based on the projection area 4 of the previous step, whether the projection area 5 exists in the X positive axis direction is judged, if so, the coordinates and the width height of the left upper corner point of the overlapping area of the projection area 1 and the projection area 5 are calculated according to the coordinates of the projection area 1 and the projection area 5 and the resolution of the light source mechanism, and the overlapping area information is respectively corresponding to the right lower overlapping data in the data structure of the light source mechanism 1 and the left upper overlapping data in the data structure of the light source mechanism 5.

(4) Based on the light source mechanism 4, it is judged that the X negative axis direction has no light source mechanism. To this end, the overlapping area of the projection area 1 with other projection areas is determined.

(5) According to a predetermined processing sequence, data information of the projection area 2 is acquired, and similar steps (1) to (3) are performed, and operations are respectively performed with the projection area 3, the projection area 5 and the projection area 6, so as to obtain corresponding overlapping areas. And based on the projection area 5, judging whether the projection area 4 exists in the X negative axis direction, if so, calculating the coordinates and the width height of the left upper corner of the overlapping area of the projection area 2 and the projection area 4 according to the coordinates of the projection area 2 and the projection area 4 and the resolution of the light source mechanism, and writing the overlapping degree information into the left lower overlapping data in the data structure of the light source mechanism 2 and the right upper overlapping data in the data structure of the light source mechanism 4 respectively. To this end, the overlapping area of the projection area 2 with other projection areas is determined.

(6) Similarly, the overlapping area of the projection area 3 with other projection areas can be determined, resulting in lower, lower left overlapping data of the projection area 3, upper overlapping data of the light source mechanism 6, and upper right overlapping data of the light source mechanism 5.

(7) Similarly, overlapping areas of the projection area 4 and other projection areas can be determined, resulting in right, lower right overlapping data of the projection area 4, left overlapping data of the light source mechanism 5, upper overlapping data of the light source mechanism 7, left upper overlapping data of the light source mechanism 8.

(7) Similarly, overlapping areas of the projection area 5 with other projection areas can be determined, resulting in overlapping data of right, left lower, right lower of the projection area 5, overlapping data of left of the light source mechanism 6, overlapping data of right of the light source mechanism 7, overlapping data of upper of the light source mechanism 8, overlapping data of left of the light source mechanism 9.

(8) Similarly, overlapping areas of the projection area 6 with other projection areas can be determined, resulting in lower, lower left overlapping data of the projection area 6, upper overlapping data of the light source mechanism 9, and upper right overlapping data of the light source mechanism 8.

(9) Similarly, the overlapping area of the projection area 7 with other projection areas can be determined, resulting in right overlapping data of the projection area 7, left overlapping data of the light source mechanism 8.

(10) Similarly, the overlapping area of the projection area 8 with other projection areas can be determined, resulting in right overlapping data of the projection area light source mechanism 8, left overlapping data of the light source mechanism 9.

(11) Similarly, the overlapping area of the projection area 9 and the other projection areas can be determined, and no light source mechanism data is provided in the X-axis and Y-axis directions, and it is confirmed that the overlapping areas of the plurality of projection areas corresponding to the plurality of light source mechanisms have been confirmed.

Next, model slicing and image segmentation may be performed based on the overlapping regions of the plurality of projection regions, and as shown in fig. 5, the regions corresponding to the light source mechanisms 1, 2, 4, and 5 are each divided into 4 sub-regions, a non-overlapping region, and three overlapping regions. The model slice image is divided because the mode of processing is different between the overlapping region and the non-overlapping region, and the gradation transition processing is not required for the non-overlapping region, but is required for the overlapping region depending on the overlapping condition.

And thirdly, carrying out gray level transition processing on the overlapping areas of the light source mechanisms according to corresponding configuration transition parameters, so that the corresponding overlapping areas meet the exposure requirement after being overlapped together.

And finally, merging the slice dividing areas at the screen divider, and transmitting the plurality of projected image blocks to the corresponding light source mechanisms by adopting the screen divider.

It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.

From the above description of the embodiments, it will be clear to those skilled in the art that the light source mechanism projection area processing method according to the above embodiments may be implemented by means of software plus a necessary general hardware platform, and of course may also be implemented by hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present invention.

According to an embodiment of the present invention, there is further provided a light source mechanism projection area processing apparatus for implementing the above light source mechanism projection area processing method, and fig. 8 is a block diagram of a light source mechanism projection area processing apparatus according to an embodiment of the present invention, as shown in fig. 8, the light source mechanism projection area processing apparatus includes: the acquisition module 82, the first determination module 84, the second determination module 86, and the processing module 88 are described below as the light source mechanism projection area processing device.

The acquiring module 82 is configured to acquire projection areas corresponding to the plurality of light source mechanisms respectively.

The first determining module 84 is connected to the acquiring module 82 and is used for determining the positional relationship of the plurality of projection areas.

The second determining module 86 is connected to the first determining module 84, and is configured to determine, according to the positional relationship, overlapping areas of the projection areas to be processed and other projection areas, respectively, in a predetermined processing order, where the other projection areas include adjacent areas of the projection areas to be processed.

The processing module 88 is connected to the second determining module 86 for.

Here, the above-mentioned obtaining module 82, the first determining module 84, the second determining module 86, and the processing module 88 correspond to steps S302 to S308 in the embodiment, and the plurality of modules are the same as the examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in the above-mentioned embodiment. It should be noted that the above-described module may be operated as a part of the apparatus in the computer terminal 10 provided in the embodiment.

Embodiments of the present invention may provide a computer device, optionally in this embodiment, the computer device may be located in at least one network device of a plurality of network devices of a computer network. The computer device includes a memory and a processor.

The memory may be used to store software programs and modules, such as program instructions/modules corresponding to the light source mechanism projection area processing method and apparatus in the embodiments of the present invention, and the processor executes the software programs and modules stored in the memory, thereby executing various functional applications and data processing, that is, implementing the light source mechanism projection area processing method described above. The memory may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include memory remotely located relative to the processor, which may be connected to the computer terminal via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The processor may call the information and the application program stored in the memory through the transmission device to perform the following steps: acquiring a plurality of projection areas formed by projecting a plurality of light source mechanisms to a printing area; determining the position relation of a plurality of projection areas; according to the position relation, respectively determining overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed; the overlapping regions are processed to coincide with the light sources at any one of the plurality of projection regions.

Optionally, the above processor may further execute program code for: according to the position relation, respectively determining the overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the method comprises the following steps: confirming that the first projection area in the projection areas to be processed is the projection area to be processed according to a preset processing sequence; determining the area adjacent to the projection area to be processed in the preset direction as other projection areas according to the position relation, wherein the preset direction is related to the preset processing sequence; an overlap region of the projection region to be processed and other projection regions is determined.

Optionally, the above processor may further execute program code for: according to the positional relationship, determining the area adjacent to the projection area to be processed in the predetermined direction as the other projection area includes: the predetermined direction comprises a first direction and a second direction, and when a first adjacent area adjacent to the projection area to be processed exists in the first direction of the projection area to be processed, other projection areas are determined to comprise the first adjacent area according to the position relation; determining that the other projection areas include a second adjacent area in the case that there is a second adjacent area adjacent to the projection area to be processed in the second direction of the projection area to be processed; determining that other projection areas comprise a third adjacent area under the condition that the third adjacent area adjacent to the projection area to be processed exists in the first direction of the second adjacent area; in the case where there is a fourth adjacent region adjacent to the projection region to be processed in the opposite direction to the first direction of the second adjacent region, it is determined that the other projection region includes the fourth adjacent region.

Optionally, the above processor may further execute program code for: the first adjacent region is the next projection region to be processed of the projection regions to be processed in the predetermined processing sequence.

Optionally, the above processor may further execute program code for: determining a positional relationship of a plurality of projection areas, comprising: determining coordinates of reference points of each of the plurality of projection areas; and determining the position relation of the plurality of projection areas according to the coordinates of the reference points of the plurality of projection areas.

Optionally, the above processor may further execute program code for: further comprises: determining the position of an overlapping area of a projection area to be processed and other projection areas; the positions of the overlapping areas are respectively corresponding to the light source mechanisms corresponding to the projection areas to be processed and the light source mechanisms corresponding to other projection areas.

Optionally, the above processor may further execute program code for: processing the overlap region to conform the light sources at any of the plurality of projection regions, comprising: acquiring an image to be projected; dividing an image to be projected according to overlapping areas of the plurality of projection areas and other projection areas respectively to obtain a plurality of projection image blocks; determining projection image blocks corresponding to the light source mechanisms respectively; and respectively transmitting the plurality of projection image blocks to corresponding light source mechanisms, wherein the plurality of light source mechanisms are used for respectively projecting the respective corresponding projection image blocks to the construction surface.

Optionally, the above processor may further execute program code for: before the plurality of projected image blocks are respectively sent to the corresponding light source mechanisms, the method further comprises: and carrying out image information gradual change processing on the image overlapping areas in the plurality of projection image blocks.

Optionally, the above processor may further execute program code for: performing image information gradation processing on overlapping areas in a plurality of projection image blocks, including: performing image processing on an image overlapping region in a projection image block to be processed in a plurality of projection image blocks so as to divide the image overlapping region into a plurality of subareas according to image information; the image information superposition values of the plurality of projection image blocks in the subareas fall into a preset range.

Optionally, the above processor may further execute program code for: when the number of the light source mechanisms corresponding to the image overlapping areas is a first preset number, the image information values of the image overlapping areas are in step decrease along a third direction and remain unchanged along a fourth direction; the third direction is the splicing direction of the projection image block to be processed and is the direction of the inner side of the projection image block to be processed to the edge side; the third direction and the fourth direction are perpendicular; when the number of the light source mechanisms corresponding to the image overlapping areas is a second preset number, the image information values of the image overlapping areas are in step decrease along a third direction; wherein the second preset number is greater than the first preset number.

Optionally, the above processor may further execute program code for: the change trend of the first image information distribution and the change trend of the second image information distribution are in a mirror image relationship or an approximate mirror image relationship; the first image information is distributed as the image information of the image overlapping area of any one of the adjacent projected image blocks; the second image information distribution is the image information distribution of the image overlapping area of another projection image block in the adjacent projection image blocks; the inversion axis of the mirror image relationship is determined according to the position of either projected image block and the position of the other projected image block.

Optionally, the above processor may further execute program code for: the first image information and the second image information are in a mirror image relationship or an approximate mirror image relationship; the first image information is the image information of the overlapping area of any one of the adjacent divided images; the second image information is the image information of the overlapping area of the other divided image in the adjacent divided images; the inversion axis of the mirror image relationship is determined according to the position of any one divided image and the position of another divided image.

Optionally, the above processor may further execute program code for: before acquiring the image to be projected, the method may further include: determining the running states corresponding to the light source mechanisms respectively according to the projection areas, wherein the running states comprise a normal state and an abnormal state; and under the condition that the running states corresponding to the light source mechanisms respectively comprise abnormal states, sending the running states corresponding to the light source mechanisms respectively to the cloud end, wherein the cloud end is used for determining the image to be projected according to the running states corresponding to the light source mechanisms respectively.

Optionally, the above processor may further execute program code for: before dividing the image to be projected according to the overlapping areas of the plurality of projection areas and other projection areas respectively to obtain a plurality of projection image blocks, the method may further include: judging whether the size of the image to be projected is matched with the spliced area of the plurality of projection areas or not; under the condition that the size of the image to be projected is not matched with the spliced areas of the plurality of projection areas, determining the running states corresponding to the plurality of light source mechanisms respectively, and sending the running states to the cloud end, wherein the running states comprise a normal state and an abnormal state, and the cloud end is used for redetermining the image to be projected according to the running states corresponding to the plurality of light source mechanisms respectively.

By adopting the embodiment of the invention, a scheme for processing the projection area of the light source mechanism is provided. A plurality of projection areas formed by acquiring a plurality of light source mechanisms to project toward the printing area; determining the position relation of a plurality of projection areas; according to the position relation, respectively determining overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed; the overlapping area is processed to make the light sources at any position of the plurality of projection areas consistent, so that the purpose of sequentially determining the overlapping areas of the respective projection areas of the plurality of light source mechanisms according to a preset sequence is achieved, the technical effect of adaptively determining the overlapping areas of the respective projection areas of the plurality of light source mechanisms is achieved, and the technical problem that the overlapping areas among the plurality of light source mechanisms cannot be adaptively determined in the related art is solved.

Those skilled in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program for instructing a terminal device to execute on associated hardware, the program may be stored in a non-volatile storage medium, and the storage medium may include: flash disk, read-Only Memory (ROM), random-access Memory (Random Access Memory, RAM), magnetic or optical disk, and the like.

Embodiments of the present invention also provide a nonvolatile storage medium. Alternatively, in the present embodiment, the above-described nonvolatile storage medium may be used to store the program code executed by the light source mechanism projection area processing method provided in the above-described embodiment.

Alternatively, in this embodiment, the above-mentioned nonvolatile storage medium may be located in any one of the computer terminals in the computer terminal group in the computer network, or in any one of the mobile terminals in the mobile terminal group.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: acquiring a plurality of projection areas formed by projecting a plurality of light source mechanisms to a printing area; determining the position relation of a plurality of projection areas; according to the position relation, respectively determining overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed; the overlapping regions are processed to coincide with the light sources at any one of the plurality of projection regions.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: according to the position relation, respectively determining the overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the method comprises the following steps: confirming that the first projection area in the projection areas to be processed is the projection area to be processed according to a preset processing sequence; determining the area adjacent to the projection area to be processed in the preset direction as other projection areas according to the position relation, wherein the preset direction is related to the preset processing sequence; an overlap region of the projection region to be processed and other projection regions is determined.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: according to the positional relationship, determining the area adjacent to the projection area to be processed in the predetermined direction as the other projection area includes: the predetermined direction comprises a first direction and a second direction, and when a first adjacent area adjacent to the projection area to be processed exists in the first direction of the projection area to be processed, other projection areas are determined to comprise the first adjacent area according to the position relation; determining that the other projection areas include a second adjacent area in the case that there is a second adjacent area adjacent to the projection area to be processed in the second direction of the projection area to be processed; determining that other projection areas comprise a third adjacent area under the condition that the third adjacent area adjacent to the projection area to be processed exists in the first direction of the second adjacent area; in the case where there is a fourth adjacent region adjacent to the projection region to be processed in the opposite direction to the first direction of the second adjacent region, it is determined that the other projection region includes the fourth adjacent region.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: the first adjacent region is the next projection region to be processed of the projection regions to be processed in the predetermined processing sequence.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: determining a positional relationship of a plurality of projection areas, comprising: determining coordinates of reference points of each of the plurality of projection areas; and determining the position relation of the plurality of projection areas according to the coordinates of the reference points of the plurality of projection areas.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: further comprises: determining the position of an overlapping area of a projection area to be processed and other projection areas; the positions of the overlapping areas are respectively corresponding to the light source mechanisms corresponding to the projection areas to be processed and the light source mechanisms corresponding to other projection areas.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: processing the overlap region to conform the light sources at any of the plurality of projection regions, comprising: acquiring an image to be projected; dividing an image to be projected according to overlapping areas of the plurality of projection areas and other projection areas respectively to obtain a plurality of projection image blocks; determining projection image blocks corresponding to the light source mechanisms respectively; and respectively transmitting the plurality of projection image blocks to corresponding light source mechanisms, wherein the plurality of light source mechanisms are used for respectively projecting the respective corresponding projection image blocks to the construction surface.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: before the plurality of projected image blocks are respectively sent to the corresponding light source mechanisms, the method further comprises: and carrying out image information gradual change processing on the overlapped area in the plurality of projection image blocks.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: performing image information gradation processing on overlapping areas in a plurality of projection image blocks, including: performing image processing on an image overlapping region in a projection image block to be processed in a plurality of projection image blocks so as to divide the image overlapping region into a plurality of subareas according to image information; the image information superposition values of the plurality of projection image blocks in the subareas fall into a preset range.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: when the number of the light source mechanisms corresponding to the image overlapping areas is a first preset number, the image information values of the image overlapping areas are in step decrease along a third direction and remain unchanged along a fourth direction; the third direction is the splicing direction of the projection image block to be processed and is the direction of the inner side of the projection image block to be processed to the edge side; the third direction and the fourth direction are perpendicular; when the number of the light source mechanisms corresponding to the image overlapping areas is a second preset number, the image information values of the image overlapping areas are in step decrease along a third direction; wherein the second preset number is greater than the first preset number.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: the change trend of the first image information distribution and the change trend of the second image information distribution are in a mirror image relationship or an approximate mirror image relationship; the first image information is distributed as the image information of the image overlapping area of any one of the adjacent projected image blocks; the second image information distribution is the image information distribution of the image overlapping area of another projection image block in the adjacent projection image blocks; the inversion axis of the mirror image relationship is determined according to the position of either projected image block and the position of the other projected image block.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: the first image information and the second image information are in a mirror image relationship or an approximate mirror image relationship; the first image information is the image information of the overlapping area of any one of the adjacent divided images; the second image information is the image information of the overlapping area of the other divided image in the adjacent divided images; the inversion axis of the mirror image relationship is determined according to the position of any one divided image and the position of another divided image.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: before acquiring the image to be projected, the method may further include: determining the running states corresponding to the light source mechanisms respectively according to the projection areas, wherein the running states comprise a normal state and an abnormal state; and under the condition that the running states corresponding to the light source mechanisms respectively comprise abnormal states, sending the running states corresponding to the light source mechanisms respectively to the cloud end, wherein the cloud end is used for determining the image to be projected according to the running states corresponding to the light source mechanisms respectively.

Optionally, in the present embodiment, the non-volatile storage medium is arranged to store program code for performing the steps of: before dividing the image to be projected according to the overlapping areas of the plurality of projection areas and other projection areas respectively to obtain a plurality of projection image blocks, the method may further include: judging whether the size of the image to be projected is matched with the spliced area of the plurality of projection areas or not; under the condition that the size of the image to be projected is not matched with the spliced areas of the plurality of projection areas, determining the running states corresponding to the plurality of light source mechanisms respectively, and sending the running states to the cloud end, wherein the running states comprise a normal state and an abnormal state, and the cloud end is used for redetermining the image to be projected according to the running states corresponding to the plurality of light source mechanisms respectively.

The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In the embodiments provided in the present application, it should be understood that the disclosed technical content may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, for example, may be a logic function division, and may be implemented in another manner, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a non-volatile storage medium. Based on such understanding, the technical solution of the present invention may be embodied essentially or in part or all of the technical solution or in part in the form of a software product stored in a storage medium, including instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims

1. A light source mechanism projection area processing method is applied to 3D printing equipment, wherein the 3D printing equipment comprises a construction surface, a forming platform and a plurality of light source mechanisms;

the molding platform is used for forming a three-dimensional object; defining a print zone between the build surface and the forming table, the print zone being filled with a polymerizable liquid;

the plurality of light source mechanisms are for projecting light sources toward the print zone to cause the polymerizable liquid to form a solid or semi-solid polymer;

the processing method is characterized by comprising the following steps:

acquiring a plurality of projection areas formed by projecting the plurality of light source mechanisms to the printing area;

determining the position relation of the plurality of projection areas;

according to the position relation, respectively determining overlapping areas of the projection areas to be processed and other projection areas in the plurality of projection areas according to a preset processing sequence, wherein the other projection areas comprise adjacent areas of the projection areas to be processed;

The overlapping regions are processed to conform to the light sources at any one of the plurality of projection regions.

2. The method according to claim 1, wherein determining overlapping areas of the projection area to be processed and other projection areas among the plurality of projection areas in a predetermined processing order, respectively, according to the positional relationship, comprises:

according to the preset processing sequence, confirming that the first projection area in the projection areas to be processed is the projection area to be processed;

determining an area adjacent to the projection area to be processed in a preset direction as the other projection area according to the position relation, wherein the preset direction is related to the preset processing sequence;

and determining the overlapping area of the projection area to be processed and the other projection areas.

3. The method according to claim 2, wherein determining, as the other projection area, an area located adjacent to the projection area to be processed in a predetermined direction based on the positional relationship, comprises:

the predetermined direction includes a first direction and a second direction, and in the case that a first adjacent region adjacent to the projection region to be processed exists in the first direction of the projection region to be processed, the other projection regions are determined to include the first adjacent region according to the positional relationship;

Determining that the other projection area includes a second adjacent area adjacent to the projection area to be processed in the second direction of the projection area to be processed;

determining that the other projection areas comprise a third adjacent area adjacent to the projection area to be processed in the first direction of the second adjacent area;

and determining that the other projection area comprises a fourth adjacent area when the fourth adjacent area adjacent to the projection area to be processed exists in the opposite direction of the first direction of the second adjacent area.

4. A method according to claim 3, wherein the first adjacent region is a projection region to be processed next to the projection region to be processed in the predetermined processing sequence.

5. The method of claim 1, wherein determining the positional relationship of the plurality of projection areas comprises:

determining coordinates of reference points of each of the plurality of projection areas;

and determining the position relation of the plurality of projection areas according to the coordinates of the reference points of the plurality of projection areas.

6. The method as recited in claim 1, further comprising:

determining the overlapping area position of the projection area to be processed and the other projection areas;

and respectively corresponding the positions of the overlapped areas to the light source mechanisms corresponding to the projection areas to be processed and the light source mechanisms corresponding to the other projection areas.

7. The method of any one of claims 1 to 6, wherein processing the overlap region to reconcile light sources at any one location of the plurality of projection regions comprises:

acquiring an image to be projected;

dividing the image to be projected according to the overlapping areas of the plurality of projection areas and other projection areas respectively to obtain a plurality of projection image blocks;

determining projection image blocks respectively corresponding to the light source mechanisms;

and respectively transmitting the plurality of projection image blocks to corresponding light source mechanisms, wherein the plurality of light source mechanisms are used for respectively projecting the respective corresponding projection image blocks to the construction surface.

8. The method of claim 7, further comprising, prior to separately transmitting the plurality of projected image blocks to the corresponding light source mechanisms:

And carrying out image information gradient processing on the image overlapping areas in the plurality of projection image blocks.

9. The method of claim 8, wherein performing image information fade processing on overlapping regions in the plurality of projected image blocks comprises:

performing image processing on an image overlapping region in a projection image block to be processed in the plurality of projection image blocks so as to divide the image overlapping region into a plurality of subareas according to image information; and the image information superposition values of the plurality of projection image blocks in the subareas fall into a preset range.

10. The method of claim 9, wherein the step of determining the position of the substrate comprises,

when the number of the light source mechanisms corresponding to the image overlapping area is a first preset number, the image information value of the image overlapping area is decreased in a step manner along a third direction and is kept unchanged along a fourth direction; the third direction is the splicing direction of the projection image block to be processed and is the direction of the inner side of the projection image block to be processed to the edge side; the third direction and the fourth direction are perpendicular;

when the number of the light source mechanisms corresponding to the image overlapping areas is a second preset number, the image information values of the image overlapping areas are in step decrease along the third direction; wherein the second preset number is greater than the first preset number.

11. The method according to claim 9 or 10, wherein the trend of the first image information distribution is mirrored or approximately mirrored with the trend of the second image information distribution; the first image information is distributed as the image information of the image overlapping area of any one of the adjacent projected image blocks; the second image information distribution is the image information distribution of the image overlapping area of another projection image block in the adjacent projection image blocks; the inversion axis of the mirror image relationship is determined according to the position of any one projection image block and the position of the other projection image block.

12. The method of claim 11, wherein the first image information is mirrored or approximately mirrored with the second image information; the first image information is the image information of the overlapping area of any one of the adjacent divided images; the second image information is the image information of the overlapping area of the other segmented image in the adjacent segmented images; the inversion axis of the mirror image relationship is determined according to the position of any one of the divided images and the position of the other divided image.

13. The method of claim 7, further comprising, prior to acquiring the image to be projected:

Determining operation states corresponding to the light source mechanisms respectively according to the projection areas, wherein the operation states comprise a normal state and an abnormal state;

and under the condition that the running states corresponding to the light source mechanisms respectively comprise abnormal states, sending the running states corresponding to the light source mechanisms to a cloud end, wherein the cloud end is used for determining the image to be projected according to the running states corresponding to the light source mechanisms respectively.

14. The method of claim 7, further comprising, before dividing the image to be projected according to overlapping areas of the plurality of projection areas with other projection areas, respectively, to obtain a plurality of projection image blocks:

judging whether the size of the image to be projected is matched with the spliced area of the plurality of projection areas or not;

and under the condition that the size of the image to be projected is not matched with the spliced areas of the plurality of projection areas, determining the running states corresponding to the plurality of light source mechanisms respectively, and sending the running states to a cloud, wherein the running states comprise a normal state and an abnormal state, and the cloud is used for redetermining the image to be projected according to the running states corresponding to the plurality of light source mechanisms respectively.

15. A light source mechanism projection area processing device connected with a 3D printing apparatus, the 3D printing apparatus comprising a build surface, a shaping platform, and a plurality of light source mechanisms;

characterized in that the processing means comprises:

the acquisition module is used for acquiring a plurality of projection areas formed by projecting the plurality of light source mechanisms to the printing area;

a first determining module for determining a positional relationship of the plurality of projection areas;

a second determining module, configured to determine, according to the positional relationship, overlapping areas of a projection area to be processed and other projection areas in the plurality of projection areas according to a predetermined processing order, where the other projection areas include adjacent areas of the projection area to be processed;

and the processing module is used for processing the overlapped area so as to enable the light sources at any position of the plurality of projection areas to be consistent.

16. A nonvolatile storage medium, characterized in that the nonvolatile storage medium includes a stored program, wherein the program, when run, controls a device in which the nonvolatile storage medium is located to execute the light source mechanism projection area processing method according to any one of claims 1 to 14.

17. A computer device, comprising: a memory and a processor, wherein the memory is configured to store,

the memory stores a computer program;

the processor is configured to execute a computer program stored in the memory, and the computer program when executed causes the processor to execute the light source mechanism projection area processing method according to any one of claims 1 to 14.