JP6552688B2 - Projection apparatus, control method for projection apparatus, program, and storage medium - Google Patents

Description

  The present invention relates to a projection device that projects an image on a screen, a control method of the projection device, a program, and a storage medium.

  Conventionally, it is known to display a menu image for changing settings of an image displayed on the display on the display.

  It is disclosed that the user operates the indicator to change the position of the menu image displayed on the display (Patent Document 1).

Unexamined-Japanese-Patent No. 2005-122393

  In recent years, in a system including a plurality of projection devices, one image is divided into a plurality, each divided image is projected from each projection device onto a screen, and one image is superimposed by superimposing a plurality of projected images. A multi-projection technique for projecting onto a screen is known.

  In such a system, a menu image display method has not been considered. Therefore, the menu image may be difficult to see by the projected image.

  Therefore, an object of the present invention is to prevent an additional image from being displayed in an area where edge blending processing is performed and is superimposed on an image projected by another projection device.

  The projection apparatus according to the present invention includes a projection unit that projects a projection image onto a screen, a control unit that controls a change in the position of the additional image with respect to the projection image, and combines the additional image with the projection image based on the position. Combining means for switching the method of changing the position of the additional image between the case where the edge blending process is performed on the projected image and the case where the edge blending process is not performed on the projected image. Do.

  According to the present invention, the additional image can be prevented from being displayed in the area where the edge blending process is performed, which is superimposed on the image projected by another projector.

It is a block diagram which shows an example of a structure of the projection apparatus which concerns on 1st Embodiment. It is a flowchart figure which shows an example of the display control process performed in 1st Embodiment. It is a figure which shows an example of the display position of the additional image with respect to the projection image in 1st Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

First Embodiment
FIG. 1 is a block diagram showing an example of the configuration of the projection apparatus 100 according to the first embodiment. Note that the projection apparatus 100 is, for example, a projector.

  The projection apparatus 100 does not show one image generated by superimposing an image projected on the screen (not shown) by the projection apparatus 100 and an image projected on the screen not shown by the other projection apparatus. It is possible to perform multi-projection to project on the screen.

  As shown in FIG. 1, the projection device 100 includes a video signal input unit 101, a communication interface 102, a control unit 103, a communication bus 104, a timing signal generation unit 105, a resolution conversion unit 106, an OSD generation unit 107, and an image synthesis unit 108. And a keystone correction unit 109. Further, to the communication bus 104, a video signal processing unit 110, an edge blending processing unit 111, a light modulation device driving unit 112, a light source control unit 114, an optical system control unit 117, an operation unit 118 and a ROM 119 are connected.

  The video signal input unit 101 acquires a video signal divided from one image by another projection device or an external personal computer. Other projection apparatuses or external personal computers are called external devices. Note that the video signal input from the external device to the video signal input unit 101 may be a still image or a moving image.

  The communication interface 102 is an interface for communicating with an external device.

  The control unit 103 controls the projection device 100.

  The communication bus 104 connects the control unit 103 with the video signal input unit 101, the timing signal generation unit 105, the resolution conversion unit 106, the OSD generation unit 107, the image combining unit 108, the keystone correction unit 109, and the video signal processing unit 110. Do. Further, the communication bus 104 connects the control unit 103 with the edge blend processing unit 111, the light modulation device drive unit 112, the light source control unit 114, the optical system control unit 117, the operation unit 118, and the ROM 119.

  The timing signal generation unit 105 generates a timing signal for driving each block from the horizontal and vertical synchronization signals and the clock signal supplied from the video signal input unit 101. The resolution conversion unit 106 converts the resolution of the video signal supplied from the video signal input unit 101 into the resolution of the light modulation device 115.

  The OSD generation unit 107 generates a menu image for adjusting an image projected on a screen (not shown) by the projection device 100, a menu image for controlling the projection device 100, and the like. The image synthesis unit 108 synthesizes the video signal supplied from the resolution conversion unit 106 and the menu image generated by the OSD generation unit 107. The menu image generated by the OSD generation unit 107 is an additional image to the video signal supplied from the video signal input unit 101.

  The trapezoidal correction unit 109 corrects trapezoidal distortion generated in an image projected by the projection device 100 when the projection device 100 and a screen (not shown) are not facing each other. The video signal processing unit 110 performs noise reduction and color adjustment. The edge blend processing unit 111 determines a superimposition region in the video signal based on the timing signal input from the timing signal generation unit 105 and controls the gain of the video signal corresponding to the superimposition region. The light modulation device drive unit 112 converts a video signal input from the image synthesis unit 108 into a format suitable for the light modulation device 115, and generates driving pulses. The light source control unit 114 controls on / off and brightness of the light source 113. The overlapping area is an area for overlapping an image projected by the projection device 100 and an image projected by another projection device. The projection apparatus 100 projects a video signal including a superimposed area on a screen (not shown). Further, an image projected by the projection device 100 on a screen (not shown) is hereinafter referred to as a “projected image”.

  The light modulation device 115 modulates the light input from the light source 113 based on the video signal and the drive pulse input from the light modulation device drive unit 112. The projection optical system 116 projects the light modulated by the light modulation device 115 onto a screen (not shown). The optical system control unit 117 controls the focus and zoom of the projection optical system 116. The ROM 119 stores computer programs executed by the control unit 103, parameters used for processing performed by the control unit 103, and the like.

  Next, an example of the operation of the projection apparatus 100 will be described with reference to FIGS. FIG. 2 is a flowchart showing an example of display control processing performed by the projection device 100 in the first embodiment. The display control process in FIG. 2 can be realized by the control unit 103 executing a computer program stored in the ROM 119.

  In step S101, the control unit 103 determines whether a menu image has been requested to be displayed via the operation unit 118 or an external device has been requested to display a menu image via the communication interface 102. Then, when the control unit 103 is requested to display the menu image (Yes in S101), the process proceeds to S102. When the control unit 103 is not required to display the menu image (No in S101), the control unit 103 repeatedly performs S101.

  In S102, the control unit 103 reads first position data indicating an initial display position for the projected image of the menu image from the ROM 119, and proceeds to S103.

  The first position data stored in advance in the ROM 119 will be described with reference to FIG. FIGS. 3A to 3E are diagrams showing the display position of the menu image in the projection image 121 projected on a screen (not shown). “1” to “9” in FIGS. 3A to 3E indicate the display position of the menu image. The display position of the menu image is any one of “1” to “9” in the projection image 121. Reference numerals 120 in FIGS. 3B to 3E denote overlapping regions.

  For example, FIG. 3B shows that the left region in the projection image 121 is the overlapping region 120. In this case, when the display position of the menu image is any one of “1”, “4”, and “7”, the menu image is displayed overlapping the overlapping area 120. Therefore, when the display position of the menu image is any one of “1”, “4” and “7”, by being superimposed on the image projected by the gain control of the edge blending process or another projection device, It becomes difficult to see the menu image.

  Further, FIG. 3E shows that the upper area in the projection image 121 is the overlapping area 120. In this case, when the display position of the menu image is any one of “1”, “2” and “3”, the menu image is displayed overlapping the overlapping area 120. Therefore, when the display position of the menu image is any one of “1”, “2” and “3”, it is superimposed on the image projected by the gain control of edge blending processing or another projection device, It becomes difficult to see the menu image. Similar problems occur in FIGS. 3C to 3D.

  In the example of FIGS. 3B to 3E, when the display position of the menu image is “5”, the menu image is not displayed so as to overlap the superimposition area 120. For this reason, it is possible to eliminate the situation where the menu image becomes difficult to see by superimposing the gain control of the edge blend process and the image projected by another projection device. Thus, data indicating "5" is stored in advance in the ROM 119 as the first position data.

  In S103, the control unit 103 causes the menu image to be displayed according to the first position data read in S102, and proceeds to S104. Specifically, the control unit 103 causes the image combining unit 108 to display the menu image generated by the OSD generation unit 107 at the position corresponding to “5” in the video signal output from the resolution conversion unit 106. Control.

  In step S104, the control unit 103 is requested to change the display position of the menu image via the operation unit 118, or the external device is requested to change the display position of the menu image via the communication interface 102. Determine the height. When the control unit 103 is requested to change the display position of the menu image (Yes in S104), the control unit 103 proceeds to S105. If the control unit 103 is not requested to change the display position of the menu image (No in S104), the control unit 103 proceeds to S111.

  In step S111, the control unit 103 is requested to end the display of the menu image via the operation unit 118, or whether the external device is requested to end the display of the menu image via the communication interface 102. to decide. When the control unit 103 is requested to end the display of the menu image (Yes in S111), the control unit 103 ends the flowchart. If the control unit 103 is not requested to end the display of the menu image (No in S111), the control unit 103 returns to S104.

  In step S105, the control unit 103 acquires second position data indicating the display position of the menu image changed by the user. Specifically, the control unit 103 acquires second position data from the operation unit 118 or the external device via the communication interface 102, and proceeds to step S106.

  In S106, the control unit 103 determines whether or not the edge blend processing unit 111 is performing an edge blend process for multi-projection. If the control unit 103 determines that the edge blending processing unit 111 is performing edge blending processing (Yes in S106), the processing proceeds to S107. When the control unit 103 determines that the edge blending processing unit 111 has not performed the edge blending processing (No in S106), the processing proceeds to S108.

  In step S107, the control unit 103 determines, using the second position data acquired in step S105, whether the display position of the menu image changed by the user overlaps the overlapping area 120. Specifically, the control unit 103 determines which position in FIG. 3 (b) to FIG. 3 (e) the overlapping area 120 is arranged, and the position indicated by the second position data acquired in S105. It is determined whether or not overlaps with the overlapping region 120.

  For example, when the overlapping area 120 is as shown in FIG. 3B, the control unit 103 uses the second position data to display “1”, “4”, and “1” in the display position of the menu image changed by the user. 7 ”is determined. In this case, when the second position data indicates one of “1”, “4”, and “7”, the control unit 103 causes the display position of the menu image changed by the user to overlap the overlapping area 120. It is determined that Further, when the second position data indicates any one of “2”, “3”, “5”, “6”, “8”, and “9”, the control unit 103 has been changed by the user. It is determined that the display position of the menu image does not overlap with the overlapping area 120.

  If the display position of the menu image changed by the user does not overlap the overlapping area 120 (No in S107), the control unit 103 proceeds to S108. When the display position of the menu image changed by the user overlaps the overlapping area 120 (Yes in S107), the control unit 103 proceeds to S109.

  In step S108, the control unit 103 controls the image combining unit 108 such that the menu image is displayed at the position indicated by the second position data acquired in step S105. For example, when the second position data is data indicating “2”, the control unit 103 is generated by the OSD generation unit 107 at a position corresponding to “2” in the video signal output from the resolution conversion unit 106. The image composition unit 108 is controlled so that the menu image is displayed. After S108 is performed, the control unit 103 returns to S104.

  In S109, the control unit 103 displays a warning image on the projection image on the screen (not shown), and the process proceeds to S110. The warning image is an image for notifying that the display position of the menu image changed by the user overlaps the overlapping area 120. Furthermore, the warning image may be an image for notifying that the display position of the menu image is difficult to see due to the edge blending process. Note that, instead of the warning image, a warning sound may be output from the projection device 100 to notify that the display position of the menu image changed by the user overlaps the overlapping area 120.

  In S110, the control unit 103 moves the display position of the menu image to a position that does not overlap with the overlapping area 120, and returns to S104. For example, in FIG. 3B, when the position indicated by the second position data is “1”, the control unit 103 changes the display position of the menu image to “2”, and the menu image is “2”. The image synthesizing unit 108 is controlled to display at the position. For example, in FIG. 3B, when the position indicated by the second position data is “4”, the control unit 103 changes the display position of the menu image to “5” and changes the menu image to “5”. The image composition unit 108 is controlled so as to be displayed at the position “”. For example, in FIG. 3B, when the position indicated by the second position data is “7”, the control unit 103 changes the display position of the menu image to “8”, and changes the menu image to “8”. The image composition unit 108 is controlled so as to be displayed at the position “”. After S110 is performed, the control unit 103 returns to S104.

  When the area where the menu image is displayed is too large for the overlapping area 120 or when the overlapping area 120 is too large for the area where the menu image is displayed, the display position of the menu image overlaps the overlapping area 120. There are cases where it is not possible to move to an unacceptable position. In this case, in step S110, the control unit 103 controls the OSD generation unit 107 to generate a reduced image in which the menu image is reduced so as not to overlap the overlapping region 120, and the display position of the reduced image is set to the overlapping region 120. Move to a position that does not overlap, and return to S104.

  Note that the control unit 103 controls whether or not to perform S109 and S110 according to the determination result of S107. However, for example, when the menu image overlaps only about 5% with respect to the superimposed region 120, the visibility of the menu image projected on the screen may not be a problem for the user. Therefore, when the control unit 103 determines that the display position of the menu image changed by the user and the overlapping area 120 overlap (Yes in S107), the processing of S109 and S110 is performed according to the overlapping ratio. Whether or not it may be controlled.

  The superposition ratio is information indicating how much the display area of the menu image overlaps the projection area 120. In this case, the control unit 103 determines whether the superposition rate exceeds a predetermined threshold (for example, 10%). The control unit 103 proceeds from S107 to S108 without performing S109 and S110 when the superposition ratio is equal to or less than the predetermined threshold. In addition, when the superposition rate exceeds the predetermined threshold, the control unit 103 proceeds from S107 to S109. Thereafter, the control unit 103 may further change the method of outputting the warning image or the warning sound according to the superposition rate in S109.

  For example, in step S109, the control unit 103 may increase the size of the warning image or increase the size of the warning sound as the superimposition ratio increases. In addition, for example, the control unit 103 may change the content of the warning image or the warning sound in S109 according to the superimposition ratio.

  As described above, in the first embodiment, when the user requests display of a menu image, it is determined whether edge blending processing is performed. Then, when edge blending processing is performed, it is detected whether or not the display position of the menu image overlaps the overlapping area 120, and if overlapping, is the display position of the menu image moved outside the overlapping area Alternatively, the menu image is reduced and moved out of the overlapping area.

  Thus, the additional image can be prevented from being displayed in the area where the edge blending process is performed, which is superimposed on the image projected by the other projector.

(Other examples)
The projection apparatus according to the present invention is not limited to the projection apparatus 100 described in the first embodiment. For example, the projection apparatus according to the present invention can be realized by a system including a plurality of apparatuses.

  Furthermore, various processes and functions described in the first embodiment can also be realized by a computer program. In this case, the process according to the present invention can be executed by a computer program, and implements various functions described in the first embodiment.

  It goes without saying that the computer program according to the present invention may realize the various processes and functions described in the first embodiment using an OS (Operating System) or the like operating on a computer.

  A computer program according to the present invention is read from a computer readable recording medium and executed by a computer. As a computer readable recording medium, a hard disk device, an optical disk, a CD-ROM, a CD-R, a memory card, a ROM or the like can be used. The computer program according to the present invention may be provided from an external device to a computer via a communication interface and may be executed by the computer.

100 Projector

Claims (18)

Projection means for projecting a projected image onto a screen;
Control means for controlling the change of the position of the additional image with respect to the projection image;
Combining means for combining the additional image with the projected image based on the position;
Equipped with
The projector according to claim 1, wherein the control means switches the method of changing the position of the additional image depending on whether the edge blending process is performed on the projection image or not.   The area where the control means can change the position of the additional image when the edge blending process is performed on the projection image is the control when the edge blending process is not performed on the projection image 2. A projection device according to claim 1, characterized in that the means is narrower than the area where the position of the additional image can be changed.   The projection apparatus according to claim 1, further comprising an edge blending processing unit that performs edge blending processing on the projection image. The control means determines whether or not the edge blend process has been performed on the projection image;
The projection apparatus according to any one of claims 1 to 3, wherein the method of changing the position of the additional image is switched according to the determination result. An operation means for a user to input an instruction to change the position of the additional image;
The projection apparatus according to any one of claims 1 to 4, wherein the control means executes a process of changing the position of the additional image in accordance with the input of the instruction.   When the edge blending process is performed on the projection image, the control unit does not overlap the additional image in a superimposed area of the projection image which is superimposed on an image projected by another projection device. The projection apparatus according to claim 1, wherein the position of the additional image is changed as described above. The control means uses any one of a plurality of predetermined display positions as the position of the additional image,
The number of display positions that can be determined as the position of the additional image when the control means performs edge blending processing on the projection image is the edge blend for the projection image. The projection apparatus according to any one of claims 1 to 6, wherein the number of display positions is smaller than the number of display positions that can be determined as the position of the additional image when processing is not performed.   The projection apparatus according to any one of claims 1 to 7, wherein the additional image is a menu image for controlling the projection apparatus. Projecting the projected image onto a screen;
Controlling the change of the position of the additional image with respect to the projected image;
Combining the additional image with the projection image based on the position;
Equipped with
A control method of a projection apparatus, wherein a method of changing a position of the additional image is switched depending on whether the edge blending processing is performed on the projection image or not.   The area where the position of the additional image can be changed when the edge blending process is performed on the projection image is the position of the additional image when the edge blending process is not performed on the projection image. The control method of the projection apparatus according to claim 9, characterized in that the area is narrower than the changeable area.   The method for controlling a projection apparatus according to claim 9, further comprising a step of performing an edge blend process on the projection image. It is determined whether the edge blend process is performed on the projection image,
The method according to any one of claims 9 to 11, wherein the method of changing the position of the additional image is switched according to the determination result.   The process for changing the position of the additional image is executed in response to the input of the instruction to the operation means for the user to input an instruction to change the position of the additional image. 13. A method for controlling a projection apparatus according to any one of items 12 to 12.   When the edge blending process is performed on the projection image, the addition image is added so that the additional image does not overlap a superimposed area of the projection image that is superimposed on an image projected by another projection device. The control method of the projection apparatus according to any one of claims 9 to 13, wherein the position of the image is changed. One of a plurality of predetermined display positions is set as the position of the additional image,
The number of display positions that can be determined as the position of the additional image when the edge blending process is performed on the projection image is the case where the edge blending process is not performed on the projection image. The control method of the projection apparatus according to any one of claims 9 to 14, wherein the number is smaller than the number of display positions that can be determined as the position of the additional image.   The control method of a projection device according to any one of claims 9 to 15, wherein the additional image is a menu image for controlling the projection device.   The program for making a computer perform the control method of the projection apparatus of any one of Claims 9-16.   A computer readable storage medium storing a program for causing a computer to execute the control method of a projection apparatus according to any one of claims 9 to 16.

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