JP2018054763A - Image projection device, method for controlling image projection device, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a user to more easily carry out adjustment for multi-screen display performed by using a plurality of image projection devices.SOLUTION: An image projection device 1100 comprises image projection means that projects an image based on input image data, and receives an instruction to display an image for adjustment for adjustment in multi-screen display performed by a plurality of image projection devices (S200) and causes another image projection device 1200 performing the multi-screen display to project the image for adjustment according the received display instruction (S207).SELECTED DRAWING: Figure 4

Description

  The present invention relates to an image projection apparatus that performs multi-screen display.

  Conventionally, when multi-screen display is performed using a plurality of image projection apparatuses, an overlapping projection area (overlapping area) is provided between adjacent image projection apparatuses, and luminance correction is performed on image signals in the overlap area. The seam is inconspicuous. Further, by providing a predetermined width in the overlapping area, even if characteristics such as luminance and color are slightly different for each image projection apparatus, it is difficult to be visually recognized.

  In Patent Document 1, an OSD image (specifically, an adjustment cross guide) for adjusting the projection positions of a plurality of image projection apparatuses for multi-screen display is projected on each of the plurality of image projection apparatuses. Have been described.

JP 2009-200673 A

  However, adjustment for multi-screen display may be difficult. For example, in the above-described prior art, when adjusting an image projection apparatus for multi-screen display (for example, position adjustment, brightness adjustment, color adjustment of a projection image), the image projection apparatus projects an adjustment image. Therefore, since the image projection apparatus that has not been adjusted projects the adjustment image, the visibility of the adjustment image is deteriorated, and as a result, adjustment may be difficult.

  In addition, for example, when an adjustment menu image is displayed as an adjustment image for multi-screen display, or when a grid pattern image is projected, one of the pattern images may be displayed depending on the projection position of the menu image or pattern image. Part or all may be hidden. Even in such a case, it may be difficult to adjust for multi-screen display.

  The present invention has been made to solve the above-described problems, and an object thereof is to make adjustment for multi-screen display performed using a plurality of image projection apparatuses easier.

  In order to achieve the above object, an image projection apparatus of the present invention has, for example, the following configuration. That is, a projection unit that projects an image based on input image data, a reception unit that receives an instruction to display an adjustment image for adjustment in multi-screen display performed by a plurality of image projection apparatuses, and the reception unit Control means for projecting an image for adjustment according to a display instruction to another image projection apparatus among the plurality of image projection apparatuses performing the multi-screen display.

  ADVANTAGE OF THE INVENTION According to this invention, the adjustment for the multiscreen display performed using a some image projection apparatus can be performed more easily.

The figure which shows the structural example of the image display system of embodiment. The figure for demonstrating the hardware structural example of the image projection apparatus of embodiment. 6 is a flowchart for explaining the operation of the image projection apparatus according to the embodiment. The figure for demonstrating the transition of the display state of the menu image of embodiment. The figure which shows the other structural example of the image display system of embodiment. The figure for demonstrating the transition of the display state of the menu image of embodiment. The figure for demonstrating the display state of the menu image of embodiment. The figure for demonstrating the display state of the menu image of embodiment. The figure for demonstrating another hardware structural example of the image projection apparatus of embodiment.

  Hereinafter, the present invention will be described in detail based on the embodiments with reference to the accompanying drawings. The configurations shown in the following embodiments are merely examples, and the present invention is not limited to the illustrated configurations.

<Embodiment 1>
FIG. 1 is a diagram illustrating a configuration of an image display system according to the first embodiment. The image display system according to the present embodiment includes image projection apparatuses 1100 and 1200, and the image projection apparatuses 1100 to 1200 can communicate with each other via a network 2000. The network 2000 is, for example, a LAN (Local Area Network). The image projection apparatuses 1100 and 1200 project images onto the screen, thereby realizing a multi-screen display 3000. An overlap area 3001 is a projection area that overlaps in the image projection apparatuses 1100 and 1200. The overlapping area is subject to brightness correction different from the non-overlapping area.

  FIG. 2 is a block diagram illustrating a hardware configuration example of the image projection apparatus 1100. Since the image projection apparatuses 1100 and 1200 have the same configuration, only the image projection apparatus 1100 will be described below.

  The image projection apparatus 1100 includes a communication unit 1101, a memory 1102, an image input unit 1103, an operation input unit 1104, a graphics generation unit 1105 (hereinafter referred to as generation unit 1105), and a graphics superimposition unit 1106 (hereinafter referred to as superimposition unit 1106). . The image projection apparatus 1100 includes a graphics display control unit 1107 (hereinafter, display control unit 1107), a projection area setting unit 1108, a superimposition area setting unit 1109, a luminance correction unit 1110 (hereinafter, correction unit 1110), and an image projection. Part 1111.

  The communication unit 1101 has a wired LAN or wireless LAN function, and connects to the communication network 2000 to communicate with other image projection apparatuses 1200 to transmit and receive various data and commands.

  The memory 1102 is configured by a DRAM, and is used as a reception buffer for storing various data received via the communication unit 1101 and a frame memory for storing image data input by an image input unit 1103 described later.

  The image input unit 1103 is a unit that inputs a video signal from the outside. The image input unit 1103 of the present embodiment has a function of extracting image data (input image data) from a video signal input via an interface such as HDMI (registered trademark) (High Definition Multimedia Interface). The image input unit 1103 stores the extracted image data as an input image in a frame memory (memory 1102) for each frame.

  The operation input unit 1104 has a display screen for displaying a menu image and / or cursor image, an operation button, and the like, and is a user interface that receives an operation on the operation button by the user. Note that the operation input unit 1104 may accept a user operation on the remote control, for example.

  The generation unit 1105 generates graphics composed of pixel information such as a menu image and stores the generated graphics data in the memory 1102. In the present embodiment, graphics is an adjustment image for multi-screen display. However, the generation unit 1105 can also generate graphics different from the adjustment image for multi-screen display. The superimposing unit 1106 reads out the graphics data and the image data based on the video signal from the memory 1102, and superimposes the graphics data on the image data by performing an α blending process.

  The display control unit 1107 manages graphics displayed in response to a user operation on the operation input unit 1104 and position information for displaying the graphics. In addition, the display control unit 1107 controls the generation unit 1105 and the superimposition unit 1106 to display graphics (adjustment image). Specifically, the display control unit 1107 of the image projection apparatus 1100 not only projects graphics (adjustment image) on the image projection unit 1111 of the image projection apparatus 1100 but also the image projection unit 1111 of another image projection apparatus 1200. You can also project graphics. When the image projection apparatus 1100 causes the other image projection apparatus 1200 to project graphics, a graphics display instruction is transmitted to the other image projection apparatus 1200 via the communication unit 1101 of the image projection apparatus 1100. In addition, the display control unit 1107 of the image projection apparatus 1100 can receive a graphics display instruction from another image projection apparatus 1200 via the communication unit 1101. The display control unit 1107 of the image projection apparatus 1100 causes the image projection unit 1111 to project graphics in response to reception of a graphics display instruction from another image projection apparatus 1200.

  The projection area setting unit 1108 acquires the multi-screen display configuration set by the user operation on the operation input unit 1104 and identification information for identifying the projection region of the image projection apparatus 1100 in the multi-screen display configuration. The multi-screen display configuration indicates the number of image projection apparatuses that constitute multi-screen display and the arrangement form thereof.

  The projection area setting unit 1108 displays, for example, a selection screen expressed by a character such as “2 × 1” or “2 × 2” or a picture having a plurality of multi-screen display configurations, and the user can perform multi-screen display configuration by user operation on the selection screen. Identification information about the screen configuration can be acquired. Also, identification information regarding the projection area of the image projection apparatus 1100 in the multi-screen display configuration can be acquired by causing the user to select from the selection screen.

  An overlapping area setting unit 1109 sets an overlapping area in multi-screen display based on a user operation on the operation input unit 1104. Then, the overlapping area setting unit 1109 stores, in the memory 1102, identification information of the set overlapping area and a flag indicating whether or not luminance correction has been completed for the overlapping area. In the present embodiment, it is assumed that the identification information of the overlapping area is expressed by the start coordinates, the end coordinates in the direction orthogonal to the overlapping direction of the images, and the width in the overlapping direction.

  The correction unit 1110 performs luminance correction on the overlapping region set by the overlapping region setting unit 1109, and stores the image data subjected to the luminance correction in the frame buffer of the memory 1102.

  The image projection unit 1111 includes a display device such as a liquid crystal panel, an optical system, and a projection lamp. The image projection unit 1111 reads the image data stored in the frame buffer of the memory 1102 and displays the image data on the liquid crystal panel, thereby projecting an image.

  In the above description, an example in which each block described in FIG. 2 is individual hardware is shown, but the present invention is not limited to this example. That is, some of the functions of the blocks described in FIG. 2 may be realized by the CPU. FIG. 9 shows an example of another hardware configuration of the image projection apparatus 1100. As illustrated in FIG. 9, the image projection apparatus 1100 includes a CPU 901, a ROM 902, a RAM 903, an image display element 904, an input / output unit 905, and a communication IF 906. The ROM 902 and the RAM 903 have the same functions as the memory 1102 in FIG. The image display element 904 has a function similar to that of the image projection unit 1111 in FIG. The input / output unit 905 has the same functions as the image input unit 1103 and the operation input unit 1104 in FIG. The communication IF has the same function as the communication unit 1101 in FIG. Then, the CPU 901 executes a predetermined control program recorded in the ROM 902, so that the generation unit 1105, the superimposing unit 1106, the display control unit 1107, the projection region setting unit 1108, the overlapping region setting unit 1109, and the correction in FIG. Functions similar to those of the unit 1110 are realized.

  A plurality of CPUs 901 may exist. Further, for example, the CPU 901 realizes the functions of the display control unit 1107, the projection area setting unit 1108, and the overlapping area setting unit 1109, and the generation unit 1105, the superimposing unit 1106, and the correction unit 1110 are configured by dedicated hardware. Various configurations can be employed, such as realizing functions. In any case, the function of each block described with reference to FIG. 2 and the processor (for example, CPU 901) are implemented by executing a predetermined control program.

  FIG. 3 is a flowchart for explaining the operation of the image projection apparatus 1100. The processing described in the flowchart of FIG. 3 is realized by a processor (CPU 901) included in the image projection apparatus 1100 reading out a predetermined control program and controlling each unit of the image projection apparatus 1100. Further, the process of FIG. 3 is started, for example, at the timing when the multi-screen display mode is selected by the user. However, the present invention is not limited to this timing. For example, while the image projection apparatus 1100 is activated, the process of FIG. 3 may always be performed.

  The display control unit 1107 of the image projection apparatus 1100 waits for a graphics display instruction (S200). The graphics in the present embodiment is a setting image for multi-screen display. In the present embodiment, an instruction to display graphics by the user is received via the operation input unit 1104. That is, the display control unit 1107 receives an instruction to display an adjustment image for adjustment in multi-screen display performed by the plurality of image projection apparatuses 1100 and 1200. If an instruction to display an adjustment image is received, the process proceeds to S204. If it is determined that an instruction to display an adjustment image is not received, the process proceeds to S201.

  In step S <b> 204, the display control unit 1107 acquires identification information of the multi-screen display configuration and identification information for identifying the projection region of the image projection apparatus 1100 in the multi-screen display configuration from the projection region setting unit 1108. The identification information of the multi-screen display configuration and the identification information of the projection area of the image projection apparatus 1100 are information acquired by the projection area setting unit 1108 based on a user operation. If the projection area setting unit 1108 has not completed the acquisition of the identification information in S204, a message that prompts a user operation via the operation input unit 1104 may be displayed.

  Then, the display control unit 1107 determines whether the multi-screen display is valid based on the identification information acquired in S204 (S205). For example, when the identification information is not acquired in S204, the display control unit 1107 determines that the multi-screen display is not effective. For example, when the identification information is acquired but communication with the other image projection apparatus 1200 is not possible, the display control unit 1107 determines that the multi-screen display is not effective. If it is determined that the multi-screen display is valid, the process proceeds to S206. If it is determined that the multi-screen display is not valid, the process proceeds to S202.

  In step S <b> 206, the display control unit 1107 determines another image projection apparatus 1200 connected to the network 2000 as a graphics display destination. Then, the display control unit 1107 transmits a graphics display instruction to the image projection apparatus 1200 via the communication unit 1101 (S207). The image projection apparatus 1200 displays graphics based on the graphics display instruction from the image projection apparatus 1100. In other words, the display control unit 1107 of the image projection apparatus 1100 projects graphics (adjustment image for multi-screen display) corresponding to the display instruction received in S200 to another image projection apparatus 1200 that performs multi-screen display. The control to be executed is executed.

  Note that the display control unit 1107 of the image projection apparatus 1100 of the present embodiment instructs the image projection apparatus 1200 about the graphics projection position in S207. More specifically, the display control unit 1107 designates the projection position so that the graphics are projected onto an area that does not overlap the overlap area 3001 among the projection areas of the image projection apparatus 1200. According to such a configuration, since the overlapping area 3001 is not hidden by the graphics, there is an effect that it is easier for the user to make adjustments for multi-screen display.

  In order not to overlap the overlapping area 3001, the display control unit 1107 of the image projection apparatus 1100 can also instruct the graphics projection size in the image projection apparatus 1200. For example, even if the graphics projection position in the image projection apparatus 1200 is fixed at the center, the possibility that the overlapping area is not hidden by the graphics is increased by reducing the graphics projection size. Even if it does in this way, there exists a merit that adjustment for a multi-screen display becomes easy for a user. In other words, the display control unit 1107 can specify at least one of the projection position and the projection size of graphics (adjustment image) to be projected on the other image projection apparatus 1200.

  Note that at least the following two methods are conceivable as a method for specifying the graphics projection size. That is, a method of notifying the other image projection apparatus 1200 of the graphics size information together with a graphics display instruction, and generating a size-changed graphic in the image projection apparatus 1100 and transmitting it to the other image projection apparatus 1200. It is a method to do. Even if any of the methods is adopted, an effect that the overlapping region is not easily hidden by the graphics can be obtained. However, if the former method is used, the processing load on the image projection apparatus 1100 can be particularly reduced. If the latter method is used, the processing load of the image projection apparatus 1200 and the network 2000 communication data amount can be particularly reduced.

  When it is determined in S205 that the multi-screen display is not effective, the display control unit 1107 determines to project graphics with the image projection apparatus 1100. Then, the display control unit 1107 outputs a graphics drawing instruction (S202) to the generation unit 1105, and issues a graphics superimposing instruction (S203) to the superimposing unit 1106. As a result, an adjustment image for multi-screen display of the image projection apparatus 1100 is projected by the image projection unit 1111 of the image projection apparatus 1100.

  Further, when receiving a graphics display instruction from another image projection apparatus 1200 (YES in S201), the display control unit 1107 projects the graphics on the image projection unit 1111 of the image projection apparatus 1100. That is, the display control unit 1107 outputs a graphics drawing instruction to the generation unit 1105 in response to reception of a display instruction from another image projection apparatus 1200 (S202), and issues a graphics superimposition instruction to the superimposition unit 1106. Output (S203). In this way, the image projection unit 1111 of the image projection apparatus 1100 displays graphics according to a graphics display instruction from another image projection apparatus 1200.

  When the display control unit 1107 receives an instruction for the graphics projection position and / or projection size from another image projection apparatus 1200, the display control unit 1107 can project the graphics at the projection position and / or projection size according to the instruction.

  When performing multi-screen display using three or more image projection apparatuses, the display control unit 1107 of the image projection apparatus 1100 may receive graphics display instructions from a plurality of image projection apparatuses. As described above, when a graphics display instruction is received from a plurality of other image projection apparatuses, a part thereof may be rejected. In this way, it is possible to prevent a reduction in the visibility of graphics by projecting a plurality of graphics. When the image projection apparatus 1100 projects a plurality of graphics, the projection size of each graphics may be reduced or the projection position may be changed so that the projection areas of the plurality of graphics do not overlap. In this way, if the reduced graphics or the position-changed graphics are projected, it is possible to prevent a reduction in the visibility of the graphics due to the overlapping of a plurality of graphics.

  In addition, when a graphics projection position or projection size is designated by another image projection apparatus, when the image projection apparatus 1100 changes the designated projection position or projection size, whether or not the other image projection is possible can be changed. Notification to the device is good. In this way, for example, another image projection apparatus 1200 that has instructed graphics display to the image projection apparatus 1100 can be switched to a graphics display instruction for an image projection apparatus different from the image projection apparatus 1100. Also, for example, it is possible to switch to the determination of displaying graphics by the image projection apparatus 1200 itself.

  FIG. 4 is a diagram for explaining the transition of the display state of graphics when multi-screen display is realized in the image display system according to the first embodiment. In FIG. 4A, projection images 3100 and 3200 represent projection images by the image projection apparatuses 1100 and 1200, respectively.

  FIG. 4B shows an initial state when the multi-screen display 3000 is performed by providing an overlapping area of the projection images 3100 and 3200. FIG. 4B shows a state in which luminance correction is necessary for the overlapping area 3001 from now on. Note that color correction may be required in addition to or instead of luminance correction. A menu 3010 is a display example of graphics (adjustment menu) for performing user operations. The user can set the multi-screen display configuration by operating the operation input unit 1104 while viewing the menu 3010.

  In the present embodiment, “2 × 1” is set as the multi-screen display configuration, and “left” is set as the projection area of the image projection apparatus 1100. Note that FIG. 4B shows that the brightness correction of the overlapping area 3001 has not been completed, and thus the visibility of the adjustment menu and the adjustment pattern displayed in the projection image 3100 has decreased. Show. The adjustment pattern is a lattice pattern image shown in FIG. However, the adjustment pattern does not have to be a lattice pattern, and other patterns may be used as long as they can be used for multi-screen display adjustment.

  FIG. 4C shows a display state of the menu 3010 when the user performs a menu operation in a state where the multi-screen display is enabled. The display control unit 1107 issues a graphics display instruction to the image projection apparatus 1200 in response to the reception of the graphics display instruction to the image projection apparatus 1100, whereby the menu 3010 of the image projection apparatus 1100 is projected by the image projection apparatus 1200. . Thereby, the visibility of the adjustment menu of the image projection apparatus 1100 is improved, and the visibility of the adjustment pattern projected by the image projection apparatus 1100 is improved.

  Note that when displaying the menu 3010 of the image projection apparatus 1100, the image projection apparatus 1200 changes the display area so that the menu 3010 does not overlap the overlap area 3001, or changes such as reduction to change the display area. You may do it. For example, the image projection apparatus 1200 has an area determination function for determining the display area of the menu 3010 so as to project the menu 3010 to a position close to the projection image 3100 of the image projection apparatus 1100 while avoiding the overlapping area 3001. Have. By doing so, the range of movement of the line of sight when adjusting the multi-screen display can be shortened, so that the adjustment for multi-screen display can be made easier. Alternatively, the image projection apparatus 1200 reduces the adjustment menu and changes the display position, thereby avoiding the overlapping area 3001 and adjusting the menu 3010 of the image projection apparatus 1100 and the image projection apparatus 1200 (not shown). The menu may be projected side by side. Even in this case, the range of movement of the line of sight when adjusting the multi-screen display can be shortened, so that there is an effect that the user can easily adjust.

  As described above, the image display system according to the present embodiment can improve the visibility of the adjustment menu (graphics) and the adjustment pattern when a multi-screen display is configured using a plurality of image projection apparatuses. Thereby, it is possible to reduce the load on the user related to the adjustment of the multi-screen display.

<Embodiment 2>
Next, the second embodiment will be described focusing on differences from the first embodiment. FIG. 5 is a diagram illustrating a configuration example of the image display system according to the second embodiment. The image display system of this embodiment includes image projection apparatuses 1100 to 1400. The image projection apparatuses 1100 to 1400 can communicate with each other via the network 2000. In the present embodiment, an example will be described in which the image projection apparatuses 1100 to 1400 perform “2 × 2” multi-screen display 3000 by projecting an image. An overlap area 3001 is a projection area that overlaps in the image projection apparatuses 1100 and 1200. The overlapping area is subject to brightness correction different from the non-overlapping area. The configuration of the image projection apparatuses 1100 to 1400 and the processing flow of the image projection apparatuses 1100 to 1400 are the same as those in the first embodiment.

  FIG. 6 is a diagram for explaining the transition of the display state of graphics when multi-screen display is performed in the image display system according to the second embodiment. In FIG. 6A, projected images 3100 to 3400 represent projected images by the image projecting apparatuses 1100 to 1400, respectively. FIG. 6B shows an initial state when a “2 × 2” multi-screen display 3000 is performed by providing overlapping portions in the projected images 3100 to 3400. FIG. 6B shows a state in which luminance correction is necessary for the overlapping area 3001 from now on. A menu 3010 indicates a display state of an adjustment menu (graphics) when the user performs a menu operation in a state where multi-screen display is enabled in the image projection apparatuses 1100 to 1400.

  The image projection apparatus 1100 according to the present embodiment provides graphics to the image projection apparatus 1400 corresponding to the projection area 3400 having a small area overlapping with the projection image 3100 of the image projection apparatus 1100 among the plurality of other image projection apparatuses 1200 to 1400. To project. In other words, the display control unit 1107 of the image projection apparatus 1100 according to the present embodiment uses other image projection apparatuses that project graphics according to the graphics display instruction received in S200 of FIG. A projection device determination function for determining from the device is provided.

  Then, the display control unit 1107 of the image projection apparatus 1100 transmits a graphics display instruction to the image projection apparatus 1400 that has been determined as the image projection apparatus to project the graphics. Further, the image projection apparatus 1400 displays the display source identification information 3002 as information for identifying which image projection apparatus is displaying the adjustment menu among the plurality of image projection apparatuses.

  Similarly, FIG. 6C illustrates a state where a menu 3020 that is an adjustment menu of the image projection apparatus 1200 is projected by the image projection apparatus 1300. FIG. 6D shows a state where a menu 3030 that is an adjustment menu of the image projection apparatus 1300 is projected by the image projection apparatus 1200. FIG. 6E shows a state where a menu 3040 that is an adjustment menu of the image projection apparatus 1400 is projected by the image projection apparatus 1100.

  The display method of the adjustment menu is not limited to this. For example, as shown in FIG. 7, as long as the visibility of the adjustment menu is not impaired, the adjustment menus of a plurality of image projection apparatuses can be projected by one image projection apparatus. According to such a configuration, since the distance of the user's line-of-sight movement when confirming the contents of the plurality of adjustment menus can be shortened, the user operability can be further improved.

  Further, as shown in FIG. 8, the image projection apparatus for which the luminance correction has been completed may be preferentially determined as the image projection apparatus that projects the adjustment menu. In other words, the display control unit 1107 of the image projection apparatus 1100 causes the image projection apparatus for which adjustment for multi-screen display has been completed among the plurality of image projection apparatuses 1200 to 1400 to project another image for adjustment. Determine as the projection device. According to such a configuration, the adjustment menu can be projected onto an area with better visibility.

  Note that the following two methods are conceivable as methods for projecting the adjustment menu using a larger display area including the overlapping area where the luminance correction has been completed.

  In the first method, the image projection apparatus that issues an instruction to display the adjustment menu supplies graphics data of the adjustment menu to all the image projection apparatuses that project an image onto the area to be projected of the adjustment menu. How to send. For example, in FIG. 8, in the menus 3030 and 3040, the graphics of the portion that overlaps the overlapping area 3001 needs to be projected by both the image projection apparatuses 1100 and 1200. Therefore, the image projection apparatus that gives an instruction to display graphics transmits graphics data to both the image projection apparatuses 1100 and 1200.

  The second method is a method in which an image projection apparatus that instructs to display an adjustment menu instructs other image projection apparatuses to change the image of the overlapping area and the luminance correction. For example, in FIG. 8, the graphics data of the adjustment menu is transmitted to the image projection apparatus 1100 that can project all of the menus 3030 and 3040. On the other hand, graphics data is not transmitted to the image projection apparatus 1200 in which a part of the projection areas of the menus 3030 and 3040 is included in the projection area, and an instruction to display a black image in the overlapping area 3001 is transmitted. Alternatively, the image projection apparatus 1100 is instructed to transmit the graphics data and suppress the luminance correction of the overlapping area 3001, and the image projection apparatus 1200 is instructed only to change the luminance correction so that the image of the overlapping area 3001 is not visually recognized. It may be. By these methods, it is possible to project an adjustment menu that does not impair visibility even to the overlapping region 3001 subjected to luminance correction.

<Other embodiments>
The present invention supplies a program that realizes one or more functions of the above-described embodiments to a system or apparatus via a network or a storage medium, and one or more processors in a computer of the system or apparatus read and execute the program This process can be realized. It can also be realized by a circuit (for example, ASIC) that realizes one or more functions.

  As described above, the image display system according to the present embodiment can improve the visibility of the adjustment menu (graphics) and the adjustment pattern when a multi-screen display is configured using a plurality of image projection apparatuses. Thereby, it is possible to reduce the load on the user related to the adjustment of the multi-screen display.

DESCRIPTION OF SYMBOLS 1101 Communication part 1102 Memory 1103 Image input part 1104 Operation input part 1105 Generation part 1106 Superimposition part 1107 Display control part 1108 Projection area setting part 1109 Overlapping area setting part 1110 Correction part 1111 Image projection part

Claims (15)

Projection means for projecting an image based on input image data;
Receiving means for receiving an instruction to display an adjustment image for adjustment in multi-screen display performed by a plurality of image projection devices;
An image projection apparatus comprising: control means for projecting an adjustment image corresponding to a display instruction received by the reception means to another image projection apparatus that performs multi-screen display.   The image projection apparatus according to claim 1, wherein the control unit causes the other image projection apparatus to project the adjustment image by transmitting the other display instruction to the other image projection apparatus.   The control means further transmits at least one information of a projection size and a projection position of an adjustment image projected by the other image projection device to the other image projection device. The image projection apparatus described in 1.   4. The adjustment image according to claim 1, wherein the adjustment image is a screen operated to adjust at least one of brightness and color of a projection image by the projection unit. 5. The image projection apparatus described. Receiving means for receiving an instruction to display an adjustment image from another image projection apparatus that performs the multi-screen display;
5. The image projection apparatus according to claim 1, wherein the projection unit projects an adjustment image based on a display instruction received from the other image projection apparatus. The receiving means further receives at least one information of a projection size and a projection position of the adjustment image from the other image projection device,
The image projection apparatus according to claim 5, wherein the projection unit projects the adjustment image based on information from the other image projection apparatus. At least one of the projection size and the projection position indicated by the information received by the receiving unit, information on the projection size of the image based on the input image data by the projection unit, and the projection image in the multi-screen display Having a changing means for changing based on at least one of the information on the overlapping area;
The projection unit projects an adjustment image based on a display instruction from the other image projection apparatus according to at least one of a projection position and a projection size after the change by the changing unit. 6. The image projection apparatus according to 6.   The adjustment image is projected so that the projection area of the adjustment image according to the display instruction received by the reception means does not overlap with the projection area of another image projection apparatus that performs the multi-screen display. The image projection apparatus according to claim 1, further comprising an area determination unit that determines an area.   9. The projector according to claim 1, further comprising: a projection device determination unit that determines, from the plurality of image projection devices, another image projection device that projects an adjustment image according to a display instruction received by the reception unit. Among them, the image projection apparatus according to any one of the above.   The projection apparatus determining means determines an image projection apparatus that has completed the adjustment for the multi-screen display among the plurality of image projection apparatuses as another image projection apparatus that projects the adjustment image. The image projection apparatus according to claim 9.   The projection apparatus determining means determines an image projection apparatus having the smallest overlapping area with the projection area of the image projection apparatus as the other image projection apparatus for projecting the adjustment image among the plurality of image projection apparatuses. The image projection apparatus according to claim 9. A control method performed by an image projection apparatus having projection means for projecting an image based on input image data,
A reception step of receiving an instruction to display an adjustment image for adjustment in multi-screen display performed by a plurality of image projection devices;
And a control step of projecting an adjustment image corresponding to the received display instruction to another image projection apparatus that performs multi-screen display.   13. The control method according to claim 12, wherein the control step causes the other image projection device to project the adjustment image by transmitting an instruction to display the adjustment image to the other image projection device. .   The control step further transmits at least one information of a projection size and a projection position of an adjustment image projected by the other image projection device to the other image projection device. The control method described in 1.   The program for making a computer perform the control method of any one of Claims 12 thru | or 14.

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