Control device, projection system, control method, and program

Abstract

To ensure good projection when projecting onto a single large area using multiple projection devices. [Solution] The control unit of the control device has a configuration in which the projection area of ​​each of the multiple projectors consists of a first area projected only by that projector and a second area projected in overlap with other projectors. If there is an inspection area mark in the image projected collaboratively by the multiple projectors that is at least partially included in the projection area of ​​two or more projectors, the projection of that inspection area mark is assigned to one of the projectors.

Description

Technical Field

[0001] The present invention relates to a control device, a projection system, a control method, and a program.

Background Art

[0002] Conventionally, a projection image projected by a projector (projection device) has been used for inspection of products. For example, Patent Document 1 describes an image display type inspection system that projects a captured image of an inspection object onto a screen.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The technique described in Patent Document 1 projects an inspection image by one projector, but when the inspection object is large, etc., an inspection image may be projected using a plurality of projectors. In this case, each object (object) projected near the boundary of the projection areas of adjacent projectors is projected by being divided by a plurality of projectors. However, due to environmental factors such as vibration, for example, if adjacent projection areas move apart, one object may be separated into multiple parts, and there is a possibility of misrecognizing the number of objects.

[0005] The present invention has been made in view of the above problems, and an object thereof is to enable good projection when performing projection onto one large area by a plurality of projection devices.

Means for Solving the Problems

[0006] To solve the above problems, the control device according to the present invention is a control device for controlling the projection of a plurality of projection devices, wherein the projection area of ​​each of the plurality of projection devices is composed of a first area that can be projected by only one of the plurality of projection devices, and a second area that can be projected in overlap with the one projection device and other projection devices different from the one projection device, and the control device assigns the projection of the overlapping object to one of the projection devices when there are overlapping objects in the image projected by the plurality of projection devices that are at least partially included in the projection area of ​​any two or more of the projection devices. [Effects of the Invention]

[0007] According to the present invention, when projecting onto one large area using multiple projection devices, good projection is possible. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows an example of applying the projection system according to the present invention to vehicle inspection. [Figure 2] This block diagram shows the functional configuration of the projection system. [Figure 3] This diagram shows how inspection point marks are projected onto the underside of a vehicle using a projection system, as well as the projection area of ​​each projector. [Figure 4] This diagram shows the flow of the projection image generation process performed by the control unit in Figure 2. [Figure 5] This is a diagram showing the layer image of the inspection point markers. [Figure 6] This diagram shows the image area projected by each projector in an image projected by multiple projectors. [Figure 7] This diagram shows the procedure for generating projected images corresponding to each of multiple projectors. [Figure 8] This figure shows the projection of inspection point marks onto the underside of a vehicle of a different model than the one shown in Figure 3. [Modes for carrying out the invention]

[0009] The embodiments for carrying out the present invention will be described below with reference to the drawings. However, the embodiments described below are subject to various technically preferred limitations for carrying out the present invention. Therefore, the technical scope of the present invention is not limited to the embodiments and illustrated examples below.

[0010] This embodiment describes an example of applying the projection system 100 according to the present invention to vehicle inspection. As shown in Figure 1, in vehicle inspection, for example, inspector A visually checks multiple inspection points (e.g., screw fastening points, welded points, etc.) on the bottom of a vehicle C that has moved along a belt conveyor B located above inspector A, by tapping with a tool. The projection system 100 is configured with a control device 10 (see Figure 2) and multiple projectors 20 (20A to 20D), and the multiple projectors 20A to 20D cooperate to project inspection point marks M (objects) indicating that the inspection points are located at the locations of the inspection points on the bottom of the vehicle C that require inspection. In this embodiment, the case with four projectors is described as an example, but the number of projectors is not particularly limited as long as there are multiple projectors.

[0011] As shown in Figure 2, the control device 10 is connected to the projectors 20A to 20D wirelessly or via a wired connection, enabling the transmission and reception of data such as control signals and image data between the control device 10 and the projectors 20A to 20D.

[0012] The control device 10 is a device that controls the projection of projectors 20A to 20D. As shown in Figure 2, the control device 10 comprises a control unit 11, a RAM (Random Access Memory) 12, a storage unit 13, a communication unit 14, an operation unit 15, and a display unit 16, and these units are connected by a bus 17.

[0013] The control unit 11 is a processor that controls the operation of each part of the control device 10 by reading and executing the program 131 stored in the memory unit 13 and performing various processes. The control unit 11 may be a single CPU (Central Processing Unit), or it may be composed of multiple processors, such as a GPU (Graphics Processing Unit) or DPU (Data Processing Unit), in addition to the CPU as needed. Furthermore, multiple processors may execute the multiple processes that the control unit 11 performs. In this case, multiple processors may be involved in common processes, or multiple processors may independently execute different processes in parallel.

[0014] RAM 12 provides the control unit 11 with a working memory space and stores temporary data. The storage unit 13 is a non-temporary recording medium readable by the control unit 11 as a computer, and stores the program 131 and various data. The storage unit 13 includes, for example, at least one of non-volatile memory such as an HDD (Hard Disk Drive) or flash memory. The program 131 includes a program for executing the projection image generation process described later, and is stored in the storage unit 13 in the form of program code that can be read by the computer.

[0015] The communication unit 14 performs communication operations in accordance with predetermined communication standards. Through these communication operations, the communication unit 14 transmits and receives data wirelessly or via wired connection with projectors 20A to 20D. The communication unit 14 may also be capable of transmitting and receiving data with external devices other than projectors 20A to 20D.

[0016] The operation unit 15 is composed of an input device such as a mouse or a touch panel, and outputs an operation signal input by operating the input device to the control unit 11. The display unit 16 is composed of a display element (display device) such as a liquid crystal display or an LED (Light Emitting Diode), and displays characters or images on the liquid crystal display or lights up the LED according to the control signal output from the control unit 11.

[0017] The projectors 20A to 20D are projection devices that project (output) a projection image onto a projection surface by irradiating highly directional projection light with an intensity distribution corresponding to the image data of the projection image input from the control device 10. Specifically, each of the projectors 20A to 20D includes a light source, a display element such as a digital micromirror device (DMD) that corrects the intensity distribution of the light output from the light source to form an optical image, and a projection lens group that condenses the optical image formed by the display element and projects it from the projection port as a projection image. In the following description, when not distinguishing each of the projectors 20A to 20D, they may be referred to as the projector 20.

[0018] Projectors 20A to 20D project inspection marks M onto the inspection points on the underside of the vehicle C, using the area 30 covering the underside of the vehicle C as the overall projection area, as shown in Figure 3, for example. In the figure, there are six inspection mark Ms, and for convenience, the numbers "1" to "6" are displayed, but when actually projecting the inspection mark Ms, it is not necessary to project numbers such as "1" to "6". Also, although the inspection mark Ms are circular in shape, they may be other shapes. Area 30 is composed of individual projection areas 31A to 31D projected by each of the projectors 20A to 20D. In this embodiment, projection areas 31A to 31D are areas obtained by dividing area 30 into four equal 2x2 sections based on the number and arrangement of projectors (the areas divided by the dashed line L1 in Figure 3 (referred to as the third area)), with a margin D1 in the horizontal direction greater than or equal to the horizontal length of the inspection area mark M in Figure 3, and a margin D2 in the vertical direction greater than or equal to the vertical length of the inspection area mark M. That is, each of the projection areas 31A to 31D consists of a first area 32A to 32D, which is an area enclosed by a rectangle with a vertical length H2 and a horizontal length W2, and which can only be projected by that projector, and a second area 33A to 33D, which is an area that can be projected overlapping with other projectors (a roughly L-shaped area expanded by the horizontal width of two margins D1 and the vertical width of two margins D2). Therefore, projection regions 31A to 31D are each enclosed by rectangles with a vertical length H1 and a horizontal length W1.

[0019] Here, if the placement of projectors 20A to 20D shifts due to environmental factors such as vibration, adjacent projection areas may overlap or separate more widely, causing multiple inspection point marks M near the boundaries of the projection areas (for example, the inspection point mark M with "2" added to it, projected by both projection area 31B by projector 20B and projection area 31C by projector 20C, as shown in Figure 3, and the inspection point mark M with "4" added, projected by both projection area 31A by projector 20A and projection area 31B by projector 20B) to appear, potentially causing inspector A to misjudge the number of inspection points.

[0020] Therefore, in the present embodiment, the control device 10 executes the projection image generation process shown in FIG. 4, and assigns the projection of the inspection location mark M (overlapping object) located at the position where the plurality of projectors 20 project overlapped to one of the projectors 20, and generates the projection images projected by each of the projectors 20A to 20D, thereby controlling the projections of the projectors 20A to 20D so that each inspection location mark M is projected only by one projector 20.

[0021] Hereinafter, referring to FIG. 4, the projection image generation process executed by the control unit 11 of the control device 10 will be described. The projection image generation process is executed, for example, in cooperation with the program 131 stored in the control unit 11 and the storage unit 13 when the generation of the projection image is instructed by the operation of the operation unit 15 and the vehicle type to be the creation target of the projection image is specified. It is assumed that the storage unit 13 stores a whole image 40 that is an image of the entire area 30 and has an inspection location mark M with the identification number of the inspection location assigned to the position corresponding to all inspection locations for each vehicle type to be inspected. In addition, when projecting an image of the same size as the whole image 40 by sharing among the projectors 20A to 20D, the positions of the image areas 41A to 41D (see FIG. 6) corresponding to the projection areas 31A to 31D in the whole image 40 are determined in advance, and it is assumed that the storage unit 13 stores the position information.

[0022] In the projection image generation process, first, the control unit 11 reads out the whole image 40 corresponding to the specified vehicle type from the storage unit 13 (step S1).

[0023] Next, the control unit 11 generates a transparent layer image 50 in which each inspection point mark M of the overall image 40 is drawn only once (step S2). In this embodiment, as shown in Figure 3, there are six inspection points, 1 to 6, so the control unit 11 generates six transparent layer images 50, each showing only one inspection point, as shown in Figure 5. The size of the transparent layer image 50 is the same as the size of the overall image 40. In this embodiment, the transparent layer image 50 is generated and acquired in the projection image generation process, but the transparent layer image 50 may be generated in advance and stored in the storage unit 13, and then read and acquired from the storage unit 13.

[0024] Next, the control unit 11 divides the overall image 40 based on the number and arrangement of the projectors 20 used for projection and identifies the image area corresponding to the projection area of ​​each projector 20 (step S3). In this embodiment, since four projectors 20A to 20D are used to project in a 2x2 grid, the control unit 11 divides the overall image 40 into four 2x2 grids, as shown by the dashed lines in Figure 6, to identify the image areas corresponding to the third area of ​​each projector 20A to 20D (areas I to IV separated by the dashed line L2 in Figures 6 and 7), and identifies the image areas 41A to 41D corresponding to the projection areas 31A to 31D, the first areas 42A to 42D corresponding to the first areas 32A to 32D, and the second areas 43A to 43D corresponding to the second areas 33A to 33D. In Figure 7, within each of the image regions 41A to 41D, the rectangular regions demarcated by dashed lines are the first regions 42A to 42D, and the roughly L-shaped region outside the rectangular regions is the second region 43A to 43D.

[0025] Next, the control unit 11 determines whether or not there is an inspection area mark M that is at least partially included in the projection area of ​​any two or more projectors 20 (step S4). The control unit 11 determines whether or not there is an inspection area mark M that is at least partially included in any two or more of the image areas 41A to 41D, and based on the determination result, determines whether or not there is an inspection area mark M that is at least partially included in the projection area of ​​any two or more projectors 20.

[0026] If the control unit 11 determines that there are no inspection area marks M that are at least partially included in the projection area of ​​any two or more projectors 20 (step S4; NO), the control unit 11 proceeds to step S7.

[0027] If the control unit 11 determines that there is an inspection area mark M that is at least partially included in the projection area of ​​any two or more projectors 20 (step S4; YES), the control unit 11 calculates the distance between the centroid (center position) of the relevant inspection area mark M and the centroid (center position) of each of the third areas of the projectors 20 that include the inspection area mark M in their projection area (step S5). In step S5, the control unit 11 calculates the distance between the centroid of the relevant inspection area mark M and the centroid of each of the third areas of the projectors 20 that include the inspection area mark M as the distance between the centroid of the relevant inspection area mark M and the centroid of each of the third areas of the projectors 20 that include the inspection area mark M in their projection area.

[0028] Next, the control unit 11 assigns the projection of the overlapping inspection point marks M to the projector 20 with the relatively shortest calculated distance (step S6), and proceeds to step S7.

[0029] In step S7, the control unit 11 synthesizes the transparent layer images of the inspection area marks M to be projected onto each of the projectors 20A to 20D to generate a single projected image (step S7), and then terminates the projected image generation process. If there is only one inspection area mark M to be projected, the synthesis is omitted.

[0030] For example, if the image regions 41A to 41D corresponding to projectors 20A to 20D are as shown in the upper part of Figure 7, then the inspection point marks M that are included in at least part of the projection region of two or more projectors 20 are the inspection point marks M with "2", "3", "4", and "5" added to them. Of these, the inspection point mark M with "2" added is included in overlapping image region 41B (i.e., projection region 31B) of projector 20B and image region 41C (i.e., projection region 31C) of projector 20C, but the distance between the centroid position 2G of this inspection point mark M and the centroid position GC of the third region of projector 20C is shorter than the distance between the centroid position 2G of this inspection point mark M and the centroid position GB of the third region of projector 20B. Therefore, the projection of the inspection location mark M with the "2" added is assigned to projector 20C, and projector 20B does not project the inspection location mark M with the "2" added.

[0031] The inspection point mark M, with the "3" added, overlaps with the image area 41C (projection area 31C) of projector 20C and the image area 41D (projection area 31D) of projector 20D. However, the distance between the centroid position 3G of this inspection point mark M and the centroid position GC of the third area of ​​projector 20C is shorter than the distance between the centroid position 3G of this inspection point mark M and the centroid position GD of the third area of ​​projector 20D. Therefore, the projection of this inspection point mark M with the "3" added is assigned to projector 20C, and projector 20D does not project the inspection point mark M with the "3" added.

[0032] The inspection point mark M with the "4" added is included in both the image area 41A (projection area 31A) of projector 20A and the image area 41B (projection area 31B) of projector 20B. However, the distance between the centroid position 4G of this inspection point mark M and the centroid position GB of the third area of ​​projector 20B is shorter than the distance between the centroid position 4G of this inspection point mark M and the centroid position GA of the third area of ​​projector 20A. Therefore, the projection of this inspection point mark M with the "4" added is assigned to projector 20B, and projector 20A does not project the inspection point mark M with the "4" added.

[0033] The inspection point mark M with the "5" added is included in both the image area 41A (projection area 31A) of projector 20A and the image area 41D (projection area 31D) of projector 20D. However, the distance between the centroid position 5G of this inspection point mark M and the centroid position GD of the third area of ​​projector 20D is shorter than the distance between the centroid position 5G of this inspection point mark M and the centroid position GA of the third area of ​​projector 20A. Therefore, the projection of this inspection point mark M with the "5" added is assigned to projector 20D, and projector 20A does not project the inspection point mark M with the "5" added. Note that in the above, the distance between the centroid position of each inspection point mark M and the centroid position of the third area of ​​each projector 20 is compared, but it is not limited to this, and the distance between the centroid position of each inspection point mark M and the centroid positions of the image areas 41A to 41D of each projector 20 may also be compared.

[0034] Based on the above, as shown in Figure 7, projector 20A is assigned the inspection location mark M with "6" added, and its projected image is a cropped version of the transparent layer image 50 of the inspection location mark M with "6" added. Projector 20B is assigned the inspection location mark M with "1" added and the inspection location mark M with "4" added, and its projected image is a cropped version of a composite of the transparent layer image 50 of the inspection location mark M with "1" added and the transparent layer image 50 of the inspection location mark M with "4" added. Projector 20C is assigned the inspection location mark M with "2" added and the inspection location mark M with "3" added, and its projected image is a cropped version of a composite of the transparent layer image 50 of the inspection location mark M with "2" added and the transparent layer image 50 of the inspection location mark M with "3" added. Projector 20D is assigned inspection area mark M with the number "5" added to it, and its projected image is a cropped version of the transparent layer image 50 of inspection area mark M with the number "5" added to it.

[0035] In the above projection image generation process, the projected images from projectors 20A to 20D are associated with a vehicle type ID for identifying the vehicle type and transmitted to the corresponding projector 20A to 20D by the communication unit 14, and stored in the memory unit of each projector. When a vehicle type is specified by the operation unit 15 and projection of the inspection area is instructed, the control unit 11 transmits the vehicle type ID of the specified vehicle and the projection instruction to each of the projectors 20A to 20D by the communication unit 14. Each of the projectors 20A to 20D reads the projected image stored in association with the vehicle type ID of the specified vehicle type and performs projection based on the read projection image. Alternatively, the control unit 11 may store the generated projected images in the memory unit 13, associated with the projector's identification ID and vehicle type ID. Then, when a vehicle type is specified by the operation unit 15 and projection of the inspection area is instructed, the control unit 11 may read a projection image associated with the vehicle type ID of the specified vehicle type and the identification ID of the projector 20 from the storage unit 13 and transmit it to each of the projectors 20A to 20D via the communication unit 14, and perform projection based on the transmitted projection image. As a result, as shown in Figure 3, the inspection area marks M indicating the inspection area can be projected onto the vehicle C with good visibility.

[0036] Furthermore, by specifying a different vehicle type using the operation unit 15 and executing the above projection image generation process, it is possible to generate a projection image for inspection of a different vehicle type C. When inspecting a different vehicle type C, by specifying the vehicle type to be inspected using the operation unit 15 and instructing projection, it is possible to project inspection point marks M, which indicate inspection points for that vehicle type and are different from those shown in Figure 3, onto the vehicle C, for example, as shown in Figure 8.

[0037] In the above projection image generation process, each inspection point mark M is always assigned to only one projector 20, and a projection image for projection on each projector 20 is generated. Therefore, inspection point marks M near the boundaries of multiple adjacent projection areas can be reliably projected by a single projection device. Consequently, it is possible to prevent multiple or no inspection point marks M near the boundaries of multiple adjacent projection areas from being projected, resulting in clear and easily visible projection.

[0038] In the above embodiment, if the control unit 11 determines that there is an inspection mark M whose projection area is at least partially included in the projection area of ​​any two or more projectors 20, it calculates the distance between the centroid of the inspection mark M and the centroid of each of the third areas of the projectors 20 that include the inspection mark M in their projection area, and assigns the projection of the overlapping inspection mark M to the projector 20 with the relatively shorter calculated distance. As a variation of this, if the control unit 11 determines that there is an inspection mark M whose projection area is at least partially included in the projection area of ​​any two or more projectors 20, it may calculate the area in which the inspection mark M is included in each of the third areas of the two or more projectors 20 that include the inspection mark M in their projection area, and assigns the projection of the inspection mark M to the projector 20 with the relatively larger area.

[0039] As explained above, the control unit 11 of the control device 10 configures the projection areas 31A to 31D of each of the multiple projectors 20A to 20D as follows: each projection area 31A to 31D of the multiple projectors 20A to 20D is composed of a first area 32A to 32D projected only by that projector 20 and a second area 33A to 33D projected in overlap with the other projectors 20. If there are inspection point marks M in the image projected collaboratively by the multiple projectors 20A to 20D that are at least partially included in the projection area of ​​any two or more projectors 20, the control unit 11 assigns the projection of those inspection point marks M to one of the projectors 20. Therefore, each inspection point mark M is always assigned to only one projector 20, and a projection image used for projection by each projector 20 is generated, ensuring that inspection point marks M near the boundary of multiple adjacent projection areas can be reliably projected by a single projection device. Therefore, it is possible to prevent multiple inspection point marks M near the boundaries of adjacent projection areas from being projected or not being projected at all, and to project them well with good visibility.

[0040] Furthermore, the control unit 11 calculates the distance between the centroid position of the overlapping inspection point marks M and the centroid position of the third region of each of the two or more projectors 20 that include the inspection point marks M in their projection areas, and assigns the projection of the overlapping inspection point marks M to the projector 20 with the relatively shorter distance. Therefore, the projection of the inspection point marks M can be assigned to the projector 20 corresponding to the projection area with the closest distance from the inspection point marks M to the centroid of the third region.

[0041] Alternatively, the control unit 11 calculates the area in the third region of each of two or more projectors 20 that include the overlapping inspection point marks M in their projection areas, and assigns the projection of the overlapping inspection point marks M to the projector 20 with the relatively larger area. Therefore, the projection of the inspection point marks M can be assigned to the projector 20 corresponding to the projection area with the largest area in which the inspection point marks M belong to the third region.

[0042] Furthermore, the control unit 11 acquires a transparent layer image 50 for each inspection point mark M, and if each of the multiple projectors 20A to 20D projects multiple inspection point marks M, it synthesizes the transparent layer images 50 of the multiple inspection point marks M to generate a projection image to be used for projection by projectors 20A to 20D. Therefore, a projection image consisting only of the inspection point marks M assigned to each projector 20A to 20D can be easily generated. There is no need to adjust the color, shape, brightness, etc. of the overlapping projection areas of the multiple projectors 20. Also, during projection, by simply projecting the generated projection image onto each of the multiple projectors 20, inspection point marks M near the boundaries of multiple adjacent projection areas can be reliably projected by a single projection device.

[0043] The above-described embodiments are merely preferred examples of the control device, projection system, control method, and program according to the present invention, and are not limited thereto.

[0044] For example, in the above embodiment, the control device 10 of the projection system 100 was described as a device independent of the projectors 20A to 20D. However, the control device 10 may be incorporated into one of the projectors 20A to 20D and configured as a single device. This eliminates the need to provide the control device 10 separately.

[0045] Furthermore, although the above embodiment was described using the example where the inspection area mark M, which is the object (image, figure, etc.) to be projected, is circular, the shape of the object is not particularly limited.

[0046] Furthermore, while the above embodiment discloses an example in which the HDD and flash memory of the storage unit 13 are used as the computer-readable medium for the program according to the present invention, the invention is not limited to this example. Other computer-readable mediums such as CD-ROMs and other information recording media can be applied. In addition, a carrier wave can also be applied to the present invention as a medium for providing the data of the program according to the present invention via a communication line.

[0047] While embodiments of the control device, projection system, control method, and program of the present invention have been described above, the scope of the present invention is not limited to the embodiments described above, but includes the scope of the invention as described in the claims and its equivalents. [Explanation of Symbols]

[0048] 100 Projection system, 10 Control device, 11 Control unit, 12 RAM, 13 Storage unit, 131 Program, 14 Communication unit, 15 Operation unit, 16 Display unit, 20A~20D Projector

Claims

1. A control device for controlling the projection of multiple projection devices, Each projection area of ​​the plurality of projection devices is composed of a first area that can be projected by only one of the plurality of projection devices, and a second area that can be projected in overlapping manner by the one projection device and other projection devices different from the one projection device, and if there are overlapping objects in the image projected collaboratively by the plurality of projection devices that are at least partially included in the projection areas of two or more of the projection devices, the projection of the overlapping objects is assigned to one of the projection devices. A control device equipped with a control unit.

2. Each of the projection areas of the plurality of projection devices is an area obtained by dividing the total projection area projected by the plurality of projection devices based on the number and arrangement of the plurality of projection devices, with a predetermined margin added to the third area. The control unit, The distance between the centroid of the overlapping object and the centroid of the third region of each of the two or more projection devices that include the overlapping object in their projection regions is calculated, and the projection of the overlapping object is assigned to the projection device with the relatively shorter distance. The control device according to claim 1.

3. Each of the projection areas of the plurality of projection devices is an area obtained by dividing the total projection area projected by the plurality of projection devices based on the number and arrangement of the plurality of projection devices, with a predetermined margin added to the third area. The control unit, The area of ​​the duplicate object included in the third region of each of the two or more projection devices that include the duplicate object in their projection regions is calculated, and the projection of the duplicate object is assigned to the projection device with the relatively larger area. The control device according to claim 1.

4. The control unit, The transparent layer image for each object is acquired, and if each of the multiple projection devices projects multiple objects, the transparent layer images of the multiple objects are combined to generate a projection image to be used for projection by the projection device. The control device according to claim 1.

5. A control device according to any one of claims 1 to 4, Multiple projection devices, A projection system equipped with the following features.

6. A computer that controls the projection of multiple projection devices, Each projection area of ​​the plurality of projection devices is composed of a first area that can be projected by only one of the plurality of projection devices, and a second area that can be projected in overlapping manner by the one projection device and other projection devices different from the one projection device, and if there are overlapping objects in the image projected collaboratively by the plurality of projection devices that are at least partially included in the projection areas of two or more of the projection devices, the projection of the overlapping objects is assigned to one of the projection devices. Control method.

7. A computer that controls the projection of multiple projection devices, Each projection area of ​​the plurality of projection devices is composed of a first area that can be projected by only one of the plurality of projection devices, and a second area that can be projected in overlapping manner by the one projection device and other projection devices different from the one projection device, and if there are overlapping objects in the image projected collaboratively by the plurality of projection devices that are at least partially included in the projection areas of two or more of the projection devices, the projection of the overlapping objects is assigned to one of the projection devices. A program to enable it to function as a control unit.

Images