JP6598534B2 - Projection apparatus and projection method - Google Patents

Description

  The present invention relates to a projection apparatus capable of multi-projection by a plurality of projection apparatuses, and a projection method in the projection apparatus.

  There is known a multi-projection method for creating one projection image by superimposing end regions of projection images output from a plurality of projection apparatuses. When performing multi-projection, a test pattern image is output from each projection device, and the user adjusts the position of each projection device so that the patterns of the test pattern images overlap each other. Patent Document 1 discloses that a plurality of projection apparatuses can display test pattern images having the same pattern in an edge blending region by horizontally inverting and displaying an edge blending region image in a grid-like test pattern image when adjusting a multi-projection plane. Has been disclosed.

JP 2013-74475 A

  However, in the method described in Patent Document 1, it is necessary to execute a process of changing the region to be horizontally reversed every time the position of the boundary of the edge blending region changes due to the change of the position of the projection device. If the test pattern image is regenerated every time the position of the projection device is changed, a delay occurs until the test pattern image is displayed, and the operability is deteriorated. Therefore, in order to generate a test pattern image at high speed, it is necessary to provide a dedicated image processing means.

  On the other hand, if no dedicated image processing means is provided, it is necessary to select a test pattern image suitable for adjustment of the multi-projection plane from various test pattern images. In this case, a user who is not familiar with adjustment takes a long time to find a test pattern image suitable for adjusting the multi-projection plane, or selects a test pattern image not suitable for adjusting the multi-projection plane. There was a problem of being lost.

  The present invention has been made in view of the above-described points, and an object of the present invention is to make it possible to easily display a test pattern image suitable for adjusting an edge blending region.

In order to solve the above-described problems, one form of the projection apparatus of the present invention is a projection apparatus capable of multi-projection by a plurality of projection apparatuses, and includes a storage unit that stores a plurality of test pattern images, A selection unit that selects one test pattern image from the plurality of test pattern images based on the position of the edge blending region where the first projection region and the second projection region of another projection apparatus overlap, and the selection unit selects possess a projection means for projecting the one test pattern image, wherein the selecting means, the edge blending area, if it is set at the left or right end of the first projection region, the image in the vertical direction When a first image with a changing pattern is selected and the edge blending area is set to the upper end or the lower end of the first projection area, There and selects the second image which the image pattern is changed. One embodiment of the projection apparatus of the present invention is a projection apparatus capable of multi-projection by a plurality of projection apparatuses, a storage means for storing a plurality of test pattern images, its own first projection area, and other projection apparatuses. A selection unit that selects one test pattern image from the plurality of test pattern images based on the position of the edge blending region that overlaps the second projection region of the projection device, and the one test pattern image selected by the selection unit Projection means for projecting, and acquisition means for acquiring position information indicating the position of the edge blending area, and the selection means selects the plurality of test patterns before selecting the one test pattern image. A test pattern image candidate selected from the image is selected based on the position information, and in the order determined based on the position information, Wherein the projecting the serial test pattern image candidate.

According to another aspect of the projection method of the present invention, there is provided a projection method executed in a projection apparatus capable of multi-projection by a plurality of projection apparatuses, the first projection area of the projection apparatus and the number of other projection apparatuses. 2 based on the position of the projection area and the overlap edge blending area, possess the steps of selecting one test pattern image from a plurality of test pattern image, and projecting the one test pattern image selected, the, In the selecting step, when the edge blending region is set at the left end or the right end of the first projection region, the first image whose image pattern changes in the vertical direction is selected, and the edge blending region is If it is set to the upper end or lower end of the first projection region, select the second image which the image pattern is changed in the horizontal direction It is characterized in. According to another aspect of the projection method of the present invention, there is provided a projection method executed in a projection apparatus capable of multi-projection by a plurality of projection apparatuses, the first projection area of the projection apparatus and the number of other projection apparatuses. A step of selecting one test pattern image from a plurality of test pattern images based on the position of the edge blending region where two projection regions overlap, the step of projecting the selected one test pattern image, and the edge blending region Acquiring the position information indicating the position of the test pattern image, and the selecting step selects the test pattern image candidate selected from the plurality of test pattern images before selecting the one test pattern image. Selecting based on the position information, and selecting the selected test pattern image candidate based on the position information. In order is the order, and having the steps of: projecting.

  According to the present invention, it is possible to easily display a test pattern image suitable for adjusting an edge blending region.

It is a figure for demonstrating the outline | summary of the multi-projection using the projector. 1 is a diagram illustrating a configuration of a projector 1. FIG. It is a figure which shows an example of the menu screen for a user to set the position of the edge blending area | region 200. FIG. It is a figure which shows the other example of the menu screen for a user to set the position of the edge blending area | region 200. FIG. It is a figure which shows the other example of the menu screen for a user to set the position of the edge blending area | region 200. FIG. It is a table | surface which shows the classification of a test pattern image. It is a flowchart which shows the procedure of the process which projects a test pattern image. It is a flowchart which shows the procedure of the process which projects a test pattern image candidate. It is a figure which shows the structure of the projector 1 which concerns on 2nd Embodiment.

<First Embodiment>
[Overview of multi-projection]
FIG. 1 is a diagram for explaining an outline of multi-projection using the projector 1. The projectors 1a and 1b are projection devices capable of performing multi-projection on a screen in a state in which a plurality of projectors are arranged side by side or vertically. In the present specification, when a function common to the projectors 1a and 1b is described, the projector 1 may be referred to.

  The projector 1 is a projector using a transmissive liquid crystal panel, for example. The projector 1 controls the light transmittance of the liquid crystal element according to the image to be projected, and projects the image on the screen by projecting light from the light source that has passed through the liquid crystal element onto the screen. The projector 1 is not limited to a projector using a transmissive liquid crystal panel as a display device, but may be a projector using another display device using a DLP (Digital Light Processing) method, an LCOS (Liquid Crystal On Silicon) method, or the like. Good. As a liquid crystal projector, a single-plate type and a three-plate type are generally known, but either type of liquid crystal projector may be used.

  In the example shown in FIG. 1, the projectors 1a and 1b are arranged side by side, and one projection plane is created by outputting the projection images 100a and 100b arranged side by side. In FIG. 1, the hatched area is an edge blending area 200 where a part of the area of the projected image 100a and a part of the area of the projected image 100b overlap. In the edge blending region 200, the brightness of the projection image 100a decreases as it approaches the right end of the edge blending region 200, and the brightness of the projection image 100b decreases as it approaches the left end of the edge blending region 200.

  As shown in FIG. 1, the user performs the edge blending setting of the projectors 1 a and 1 b after arranging the projection surfaces of the plurality of projectors 1 a and 1 b so as to partially overlap each other. The projectors 1a and 1b project a test pattern image selected from a plurality of test pattern images based on the position of the edge blending region 200 in a mode in which edge blending is set. The user can adjust the position and orientation of the projectors 1a and 1b, the hue of the projected image, and the like using the test pattern image.

[Description of Configuration of Projector 1]
Hereinafter, the configuration of the projector 1 according to the present embodiment will be described in detail.
FIG. 2 is a diagram illustrating a configuration of the projector 1. The projector 1 includes a projection unit 11, a connection unit 12, an operation unit 13, an image processing unit 14, a ROM 15, a RAM 16, and a control unit 17.

  The projection unit 11 projects a projection image 100 based on the image generated by the image processing unit 14 onto the screen. The projection unit 11 includes a light source 111, a light source control unit 112, a liquid crystal panel unit 113, a liquid crystal driving unit 114, a projection optical system 115, and an optical system control unit 116.

The light source 111 outputs light for projecting the projection image 100 onto the screen. The light source 111 is, for example, a halogen lamp, a xenon lamp, or a high-pressure mercury lamp.
The light source control unit 112 adjusts the light amount of the light source 111 and controls emission on / off based on a control command input from the control unit 17.

The liquid crystal panel unit 113 includes liquid crystal elements corresponding to red (R), green (G), and blue (B) (hereinafter referred to as “RGB”). The liquid crystal panel 113 generates an image of each color from RGB light emitted from the light source 111 and separated by a mirror (not shown). Specifically, the liquid crystal panel unit 113 corresponds to the projection image input from the image processing unit 14 by changing the transmittance of the liquid crystal element corresponding to each color of RGB based on the control of the liquid crystal driving unit 114. The light of each color is output to the projection optical system 115.
The liquid crystal driving unit 114 controls the transmittance of the liquid crystal panel unit 113 on the basis of a control command input from the control unit 17, whereby light of each color of RGB corresponding to the projection image input from the image processing unit 14. Is output from the liquid crystal panel unit 113.

The projection optical system 115 projects the combined light of each color light output from the liquid crystal panel unit 113 onto the screen. The projection optical system 115 has a plurality of lenses and lens driving actuators. The projection optical system 115 can perform enlargement, reduction, focus adjustment, and the like of the projection image by driving the lens with an actuator based on the control of the optical system control unit 116.
The optical system control unit 116 controls the projection optical system 115 based on the control command input from the control unit 17 and adjusts the zoom rate, shift amount, focus, and the like.

  The connection unit 12 is an interface that receives a video signal, an audio signal, and various control signals from an external device. The connection unit 12 includes, for example, a composite terminal, an S video terminal, a D terminal, a component terminal, an analog RGB terminal, a DVI-I terminal, a DVI-D terminal, or an HDMI (registered trademark) terminal. The connection unit 12 outputs image data extracted from the received video signal to the image processing unit 14. The external device is a device that can output a video signal, such as a personal computer, a camera, a mobile phone, a smartphone, a hard disk recorder, and a game machine.

  The operation unit 13 is a device that receives a user instruction and notifies the control unit 17 of the content of the instruction. The operation unit 13 is, for example, an operation interface provided in the casing of the projector 1 and is a switch, a dial, a touch panel provided on the display unit, or the like.

  The image processing unit 14 changes the resolution of the image data input from the external device via the connection unit 12, changes the frame rate, changes the shape of the image, color tone conversion, edge blending processing, OSD (On Screen) of the menu image. Display) Various changes to the projected image are performed, such as overlap processing. The image processing unit 14 outputs the image after the change process to the projection unit 11. The image processing unit 14 includes, for example, a microprocessor for image processing.

  The ROM 15 is a storage unit that stores a control program describing a processing procedure of the control unit 17, a data table used by the control unit 17 for various processes, and a test pattern image projected onto the screen by the projection unit 11. The ROM 15 stores a plurality of test pattern images in association with adjustment contents suitable for use. For example, the ROM 15 stores the first type test pattern image used for the first type adjustment that is an adjustment related to the edge blending region 200 and the second type test used for the second type adjustment that is an adjustment different from the first type adjustment. A pattern image is stored. The first type test pattern image is an image suitable for adjusting the position of the edge blending region 200, for example. The second type test pattern is, for example, an image suitable for focus adjustment, hue adjustment, and the like.

  The RAM 16 is a work memory when the control unit 17 operates. The RAM 16 temporarily stores image data input via the connection unit 12, image data after image processing is performed by the image processing unit 14, and the like.

The control unit 17 is a CPU, for example. The control unit 17 functions as an acquisition unit 171 and a selection unit 172 by executing a program stored in the ROM 15.
The acquisition unit 171 acquires position information indicating the position of the edge blending region 200 in the projection image. For example, the acquisition unit 171 acquires the position information indicated by the setting content by the user input via the operation unit 13. The acquisition unit 171 notifies the selection unit 172 of the acquired position information.

  FIG. 3 is a diagram illustrating an example of a screen for setting the position of the edge blending area 200. In FIG. 3, a projector 1a and a projector 1b are arranged side by side in the left-right direction. A menu image 150a is displayed on the projected image 100a in FIG. 3, and a menu image 150b is displayed on the projected image 100b. The menu image 150a shows a state where the right end is selected as the position of the edge blending area 200 by the user. The menu image 150b shows a state in which the left end is selected as the position of the edge blending area 200 by the user.

  FIG. 4 is a diagram showing another example of a screen for setting the position of the edge blending area 200. In FIG. 4, the projector 1a and the projector 1b are arranged so as to overlap in the vertical direction. The menu image 150a shows a state where the upper end is selected as the position of the edge blending area 200 by the user. The menu image 150b shows a state in which the lower end is selected as the position of the edge blending area 200 by the user.

  FIG. 5 is a diagram showing another example of a screen for setting the position of the edge blending area 200. In FIG. 5, the projector 1a and the projector 1b are arranged so as to overlap in the vertical direction. Further, the projector 1c and the projector 1d are arranged so as to overlap in the vertical direction at a position adjacent to the right side of the projector 1a and the projector 1b.

  The menu image 150a shows a state in which the right end and the upper end are selected as the position of the edge blending area 200 by the user. The menu image 150b shows a state in which the right end and the lower end are selected as the position of the edge blending area 200 by the user. The menu image 150c shows a state where the left end and the upper end are selected as the positions of the edge blending region 200 by the user. The menu image 150d shows a state where the left end and the lower end are selected as the positions of the edge blending area 200 by the user.

  The selection unit 172 selects one test pattern image from a plurality of test pattern images stored in the ROM 15 based on the position of the edge blending area 200 when the edge blending function is activated. For example, when the edge blending function is activated, the selection unit 172 selects one of the plurality of first type test pattern images suitable for the adjustment of the edge blending region 200 among the plurality of test pattern images stored in the ROM 15. Select the test pattern image. Note that when the edge blending function is not activated, the selection unit 172 selects the second type test pattern image that is not suitable for the adjustment of the edge blending region 200 and is suitable for the content to be adjusted.

  For example, the selection unit 172 specifies the position of the edge blending region 200 set by the user based on the position information acquired from the acquisition unit 171. The selection unit 172 determines whether the edge blending area 200 is the left / right position set at the left end or the right end of the first projection area, or the edge blending area 200 is the top / bottom position set at the upper end or the lower end of the first projection area. A test pattern image is selected based on.

  FIG. 6 is a table showing the types of test pattern images. The table of FIG. 6 shows whether or not the type of each test pattern image is suitable for each position of the edge blending area. In FIG. 6, like the test pattern images of ID1, ID3, ID5, and ID6, the image pattern changes in the vertical direction, and the test pattern image (first image) including the parallel lines in the horizontal direction is the edge blending area. It is shown that 200 is suitable for the left and right positions.

  In FIG. 6, the test pattern image (second image) having a parallel line in the vertical direction and the image pattern changes in the horizontal direction as in the test pattern images of ID2, ID4, ID5, and ID6, It is shown that it is suitable when the blending area 200 is in the vertical position. In FIG. 6, like the test pattern images of ID5 and ID6, the image pattern changes in the horizontal direction and the vertical direction, and a test pattern image (third image) including lines parallel to the horizontal direction and the vertical direction is obtained. It is shown that the edge blending region 200 is suitable for the case where the edge blending region 200 is a left / right up / down position including a left / right position and a vertical position.

  Note that the monosco test pattern such as the ID7 test pattern image and the character test pattern such as the ID8 test pattern image are not suitable for the adjustment of the edge blending region 200, and are suitable for focus adjustment or the like. This is a type test pattern.

  The selection unit 172 selects the first image or the third image when the position of the edge blending region 200 is set to the left and right positions as in the example illustrated in FIG. 3. The selection unit 172 selects the second image or the third image when the edge blending region 200 is set at the vertical position as in the example illustrated in FIG. Further, the selection unit 172 selects the third image when the edge blending region 200 is set at both the left and right positions and the vertical position as in the example illustrated in FIG. 5.

  When there are a plurality of test pattern images suitable for the position of the edge blending region 200, the selection unit 172 may select a test pattern image having the highest priority set in advance. For example, when the position of the edge blending region 200 is set to the left-right position, the selection unit 172 gives priority to a test pattern image (for example, a test pattern image with ID1) having an image pattern whose gradation changes in the vertical direction. To choose. In addition, when the position of the edge blending region 200 is set to the vertical position, the selection unit 172 gives priority to the test pattern image (for example, the ID2 test pattern image) having an image pattern whose gradation changes in the horizontal direction. To choose. By using these test pattern images, the user can adjust the position of the edge blending region 200 and adjust the image quality.

  Before selecting one test pattern image, the selection unit 172 selects one or more test pattern image candidates selected from the plurality of test pattern images based on the position information acquired by the acquisition unit 171, and the projection unit 11. Test pattern image candidates may be projected on the screen. For example, as illustrated in FIG. 3, when the edge blending region 200 in the projection image 100 a is set to the left and right position, the selection unit 172 positions the left and right positions among the test pattern images ID1 to ID8 in FIG. 6. Appropriate ID1, ID3, ID5, and ID6 test pattern images are selected, and reduced images of these test pattern images are projected onto the projection unit 11.

  The selection unit 172 receives an operation of selecting a test pattern image desired by the user from a plurality of test pattern image candidates via the operation unit 13. Specifically, the selection unit 172 acquires information indicating the test pattern image candidate selected by the user via the operation unit 13, specifies the test pattern image selected by the user based on the acquired information, The identified test pattern image is projected on the projection unit 11. By doing so, the projector 1 can project a test pattern image that suits the user's preference among a plurality of test pattern images suitable for the position of the edge blending region 200.

[Procedure for Processing in Projection System S]
FIG. 7 is a flowchart showing a processing procedure until the projector 1 projects a test pattern image. Hereinafter, with reference to FIG. 7, a procedure of processing from when the projector 1 starts multi-projection to when a test pattern image is projected will be described.

  First, the user turns on the plurality of projectors 1 and sets them to the multi-projection mode, whereby the plurality of projectors 1 starts multi-projection (step S100). Subsequently, when the user performs an operation of displaying a menu image for adjusting the screen during multi-projection, each projector 1 projects a menu image for multi-projection screen adjustment (step S101).

  Subsequently, the acquisition unit 171 of each projector 1 acquires position information indicating the position of the edge blending region based on the user's operation, and the selection unit 172 specifies the position of the edge blending region (step S102). Subsequently, the selection unit 172 selects a test pattern image candidate suitable for the specified position based on the position of the specified edge blending region, and causes the projection unit 11 to project the selected test pattern image candidate (step S103). . When the user selects one test pattern image from a plurality of test pattern image candidates, the selection unit 172 projects the test pattern image selected by the user (step S104).

FIG. 8 is a flowchart showing the procedure of the process of projecting the test pattern image candidate in step S103 in FIG.
First, the selection unit 172 determines whether the position of the edge blending area is set to the left end or the right end (left / right position) on the menu screen for setting the position of the edge blending area (step S200). When the selection unit 172 determines that the position of the edge blending area is set to the left / right position (YES in step S200), the selection unit 172 determines whether the edge blending area is also set to the upper end or the lower end (vertical position). (Step S201).

  If the selection unit 172 determines in step S201 that the edge blending region is not set in the vertical position (NO in step S201), the selection unit 172 selects a test pattern image candidate suitable for the horizontal position (step S202). If the selection unit 172 determines in step S201 that the position of the edge blending area is also set in the vertical position (YES in step S201), the selection unit 172 selects test pattern image candidates suitable for the horizontal position and the vertical position (step S201). S203).

  If the selection unit 172 determines in step S200 that the position of the edge blending area is not set to the left / right position (NO in step S200), whether the position of the edge blending area is set to the vertical position or not. Is determined (step S204). If the selection unit 172 determines that the position of the edge blending region is set to the vertical position (YES in step S204), the selection unit 172 selects a test pattern image candidate suitable for the vertical position (step S205).

If the selection unit 172 determines in step S204 that the position of the edge blending region is not set to the vertical position (NO in step S204), the selection unit 172 selects all the test pattern image candidates (step S206).
When selecting a test pattern image candidate in steps S202, S203, S205, and S206, the selection unit 172 projects the selected test pattern candidate on the projection unit 11 (Sstep S207).

(Modification 1)
In the above description, the example in which the selection unit 172 projects the reduced image of the test pattern image candidate suitable for the position of the edge blending region has been described, but the method of projecting the test pattern image candidate is not limited to this. The selection unit 172 may cause the projection unit 11 to project the test pattern image candidates in the order determined based on the position information before selecting the test pattern image.

  For example, as illustrated in FIG. 3, when the edge blending area is set to the left and right positions, the selection unit 172 performs the edge blending area in the order of ID 1 → ID 3 → ID 5 → ID 6 → ID 2 → ID 4 → ID 7 → ID 8. After preferentially projecting test pattern image candidates suitable for the position, all other test pattern image candidates may be projected. As shown in FIG. 4, the selection unit 172 projects test pattern image candidates in the order of ID2-> ID4-> ID5-> ID6-> ID1-> ID3-> ID7-> ID8 when the edge blending area is set at the vertical position. Let As shown in FIG. 5, when the edge blending area is set to the left and right position and the vertical position, the selection unit 172 displays test pattern images in the order of ID5 → ID6 → ID1 → ID2 → ID3 → ID4 → ID7 → ID8. Project candidates.

  According to this configuration, when the edge blending setting is validated, the test pattern image suitable for the position of the edge blending region is projected with priority. Therefore, the user can easily perform the edge blending setting, and can select a test pattern other than the edge blending.

(Modification 2)
In the above description, the selection unit 172 selects the first type test pattern image when the edge blending function is activated, and selects the second type test pattern image when the edge blending function is not activated. However, the present invention is not limited to this. The selection unit 172 selects the first type test pattern image while the adjustment of the edge position of the edge blending region (first type adjustment) is being performed, and makes adjustments other than the first type adjustment (second type adjustment). While the process is being performed, the second type test pattern image may be selected. The selection unit 172 may select both the first type test pattern image and the second type test pattern image while the second type adjustment is being performed.

  For example, when the auxiliary marker used when creating the multi-projection screen is enabled, that is, when the first type adjustment is performed, the selection unit 172 specifies the position of the edge blending region, A test pattern image is selected based on the identified position. After the auxiliary marker becomes invalid, the selection unit 172 selects the second type test pattern image used for adjustments other than the adjustment related to multi-projection. The auxiliary marker is, for example, an image indicating the start position and end position of the edge blending area.

  According to this configuration, the user can select a test pattern image suitable for adjusting the edge blending area while creating a multi-projection screen in which the auxiliary marker is enabled. The user can select another test pattern image when the auxiliary marker is invalidated after creating the multi-projection screen. Therefore, the user can easily select a test pattern image suitable for the purpose of adjustment.

(Modification 3)
In the above description, the selection unit 172 has described an example in which the position of the edge blending region 200 is specified based on the position information acquired by the acquisition unit 171. However, a method for specifying the position of the edge blending region 200 is described here. Not exclusively. For example, the selection unit 172 may select a test pattern image in accordance with how the projected images 100 are arranged. Specifically, when the projectors 1a and 1b are arranged side by side in the left-right direction, the selection unit 172 selects a test pattern image suitable for the case where the edge blending region is in the left-right position. Further, the selection unit 172 selects a test pattern image suitable for the case where the edge blending region is in the vertical position when the projectors 1a and 1b are arranged in the vertical direction.

  In addition, when the plurality of projectors 1 are arranged side by side in the horizontal direction and the vertical direction (for example, in the case of the arrangement shown in FIG. 5), the selection unit 172 first has a case where the edge blending region is in the horizontal position. After selecting and projecting a test pattern image suitable for the test pattern, a test pattern image suitable for the case where the edge blending region is in the vertical position may be selected and projected. In this way, the user can efficiently adjust the edge blending area when using a plurality of projectors 1 arranged in a plurality of directions.

[Effect in the first embodiment]
As described above, in the projector 1 according to the first embodiment, the selection unit 172 identifies the position of the edge blending region in the projection image, and based on the identified position, one test is performed from a plurality of test pattern images. Select a pattern image. Then, the projection unit 11 outputs the test pattern image selected by the selection unit 172. Conventionally, at the time of multi-projection, it has been complicated for the user to search for a test pattern image suitable for the arrangement of the projector 1 at the time of multi-projection from various test pattern images. However, since the test pattern image suitable for the position of the edge blending area is displayed in a short time by the above-described configuration of the projector 1 according to the present embodiment, the user performs a complicated task of searching for an optimal test pattern image. Therefore, the adjustment work can be performed using the test pattern image suitable for the arrangement of the projector 1.

<Second Embodiment>
In the first embodiment, the user sets the position of the edge blending region 200 in each of the plurality of projectors 1, and the selection unit 172 of each projector 1 selects the test pattern image based on the position set by the user. It was supposed to be. On the other hand, in the second embodiment, the selection unit 172 of another projector 1 is positioned at the position of the edge blending region 200 based on the content that the user has set for multi-projection in one projector 1. This is different from the first embodiment in that a suitable test pattern image is selected.

  FIG. 9 is a diagram illustrating a configuration of the projector 1 according to the second embodiment. The projector 1 shown in FIG. 9 is different from the projector 1 according to the first embodiment shown in FIG. 2 in that it further includes a communication unit 18, and is the same in other points.

  The communication unit 18 includes a communication device such as a LAN controller, a wireless communication controller, or a USB controller, for example, and transmits / receives information to / from another projector 1 based on the control of the control unit 17. Specifically, the communication unit 18 transmits the specific information used for specifying the test pattern image selected by the selection unit 172 to the other projector 1. Further, the communication unit 18 receives specific information used for specifying the test pattern image selected by the selection unit 172 of the other projector 1.

  The specific information is, for example, the ID number of the test pattern image selected by the user, the information indicating the position of the edge blending area 200 set by the user, or the information regarding the arrangement of the projector 1 set by the user. The selection unit 172 selects one test pattern image from the plurality of test pattern images stored in the ROM 15 based on the specific information received from the other projector 1 by the communication unit 18.

  For example, when the projectors 1a and 1b are arranged as shown in FIG. 1, it is assumed that the user sets that the edge blending region 200 is positioned at the right end of the projection image 100a in the projector 1a. In this case, the communication unit 18 of the projector 1a transmits specific information indicating that the edge blending area 200 is set to the right end to the projector 1b.

  The selection unit 172 of the projector 1b determines that its own edge blending region 200 is at a position opposite to the position indicated by the received specific information. Specifically, the selection unit 172 of the projector 1b determines that the edge blending region 200 of the projector 1b is located at the left end of the projection image 100b based on the received specific information. Then, the selection unit 172 selects a test pattern image suitable for the case where the edge blending region 200 is located at the left end from the plurality of test pattern images.

  When the communication unit 18 of the projector 1a transmits specific information indicating that the projector 1a is arranged on the left side of the projector 1b to the projector 1b, the selection unit 172 of the projector 1b is based on the received specific information. Then, it is determined that the edge blending area 200 of the projector 1b is located at the left end of the projection image 100b. Then, the selection unit 172 selects a test pattern image suitable for the case where the edge blending region 200 is located at the left end from the plurality of test pattern images.

  When the communication unit 18 of the projector 1a transmits the ID number of the test pattern image selected by the selection unit 172 to the projector 1b, the projector 1b selects the test pattern image corresponding to the received ID number.

[Effects of Second Embodiment]
As described above, in the second embodiment, the specific information used for specifying one test pattern image selected by the selection unit 172 of one projector 1 is transmitted to the other projector 1. Then, the other projector 1 selects a test pattern image based on the received specific information. With the above configuration, the user does not need to perform a setting operation on the plurality of projectors 1, so that the time required for setting can be reduced.

  As mentioned above, although this invention was demonstrated using embodiment, the technical scope of this invention is not limited to the range as described in the said embodiment, A various deformation | transformation and change are possible within the range of the summary. is there. For example, in the above description, an example in which two projectors 1 are arranged in the horizontal direction or the vertical direction has been described. However, the number of projectors 1 is not limited to this, and an arbitrary number of projectors 1 are arranged. May be.

  In the above description, an example in which a plurality of test pattern images are stored in the ROM 15 has been described. However, the storage unit is not limited to the ROM 15. The plurality of test pattern images are stored in an external storage medium such as a hard disk or a memory card connected to the projector 1, and the selection unit 172 may read the test pattern images from the external storage medium.

DESCRIPTION OF SYMBOLS 1 ... Projector 11 ... Projection part 15 ... ROM
17 ... Control unit 172 ... Selection unit

Claims (9)

A projection device capable of multi-projection by a plurality of projection devices,
Storage means for storing a plurality of test pattern images;
Selection means for selecting one test pattern image from the plurality of test pattern images based on the position of the edge blending region where the first projection region of the first projection region overlaps the second projection region of another projection device;
Projecting means for projecting the one test pattern image selected by the selecting means;
Have
When the edge blending area is set at the left end or the right end of the first projection area, the selection unit selects a first image whose image pattern changes in the vertical direction, and the edge blending area is A projection apparatus that selects a second image whose image pattern changes in the left-right direction when set at the upper or lower end of the first projection area. The first image has a gradation that changes in the vertical direction, and the second image has a gradation that changes in the horizontal direction.
The projection apparatus according to claim 1. Said selecting means, the edge blending area if it is set to the left or right position及beauty above under position, and selects the third image which the image pattern is changed in the vertical and horizontal directions,
The projection apparatus according to claim 1 or 2. A projection device capable of multi-projection by a plurality of projection devices,
Storage means for storing a plurality of test pattern images;
Selection means for selecting one test pattern image from the plurality of test pattern images based on the position of the edge blending region where the first projection region of the first projection region overlaps the second projection region of another projection device;
Projecting means for projecting the one test pattern image selected by the selecting means;
Obtaining position information indicating the position of the edge blending area,
The selecting means selects a test pattern image candidate selected from the plurality of test pattern images based on the position information before selecting the one test pattern image, and an order determined based on the position information. And projecting the test pattern image candidate onto the projection means. A communication unit that transmits and receives information to and from other projection apparatuses;
The communication unit transmits specific information used for specifying the one test pattern image selected by the selection unit to the other projection device,
The projection device according to any one of claims 1 to 4. A projection method executed in a projection apparatus capable of multi-projection by a plurality of projection apparatuses,
Selecting one test pattern image from a plurality of test pattern images based on the position of an edge blending region where the first projection region of the projection device and the second projection region of another projection device overlap;
Projecting the selected one test pattern image;
Have
In the selecting step, when the edge blending region is set at the left end or the right end of the first projection region, the first image whose image pattern changes in the vertical direction is selected, and the edge blending region is A projection method comprising: selecting a second image whose image pattern changes in the left-right direction when the upper end or the lower end of the first projection area is set. In the step of selecting, the edge blending area if it is set to the left or right position及beauty above under position, and selects the third image which the image pattern is changed in the vertical and horizontal directions,
The projection method according to claim 6. A projection method executed in a projection apparatus capable of multi-projection by a plurality of projection apparatuses,
Selecting one test pattern image from a plurality of test pattern images based on the position of an edge blending region where the first projection region of the projection device and the second projection region of another projection device overlap;
Projecting the selected one test pattern image;
Obtaining position information indicating the position of the edge blending region, and
The step of selecting includes
Selecting a test pattern image candidate selected from the plurality of test pattern images based on the position information before selecting the one test pattern image;
Projecting the selected test pattern image candidates in an order determined based on the position information;
A projection method characterized by comprising: The method further comprises a transmission step of transmitting the specific information used for specifying the selected one test pattern image to another projection device after executing the selecting step.
The projection method according to claim 6.