WO2012073649A1 - マルチプロジェクションディスプレイシステム及びその輝度調整方法 - Google Patents
マルチプロジェクションディスプレイシステム及びその輝度調整方法 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/74—Projection arrangements for image reproduction, e.g. using eidophor
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/1423—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display
- G06F3/1446—Digital output to display device ; Cooperation and interconnection of the display device with other functional units controlling a plurality of local displays, e.g. CRT and flat panel display display composed of modules, e.g. video walls
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
- G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3141—Constructional details thereof
- H04N9/3147—Multi-projection systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3179—Video signal processing therefor
- H04N9/3182—Colour adjustment, e.g. white balance, shading or gamut
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/12—Picture reproducers
- H04N9/31—Projection devices for colour picture display, e.g. using electronic spatial light modulators [ESLM]
- H04N9/3191—Testing thereof
- H04N9/3194—Testing thereof including sensor feedback
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0233—Improving the luminance or brightness uniformity across the screen
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/029—Improving the quality of display appearance by monitoring one or more pixels in the display panel, e.g. by monitoring a fixed reference pixel
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/08—Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
Definitions
- the present invention relates to a multi-projection display system and a brightness adjustment method of a projected image by each projector unit included in the multi-projection display system.
- a multi-projection display As a large-sized projection display system, a multi-projection display is known in which images are projected from a plurality of projector units onto a screen, and the projected images are connected and displayed as a single image.
- Patent Document 1 a plurality of independent test images that are non-interfering with each other are projected onto the screen from each projector unit, and each of the projected images projected onto the screen by a measurement camera arranged in front of the screen It describes that a test image is taken, the luminance of each image is measured, and the luminance between the images is adjusted based on the measurement result.
- the screen size of the multi-projection display system increases, it is necessary to widen the shooting range of the measurement camera, and the distance between the screen and the measurement camera must be increased. Therefore, it is difficult to reduce the thickness of the multi-projection display.
- an object of the present invention is to provide a multi-projection display system having a thin and large screen, and a brightness adjusting method thereof, which can increase the number of projector units relatively easily.
- a multi-projection display system of the present invention is a multi-projection display system for connecting projected images projected from a plurality of projector units onto a screen and displaying the images as a single image, Detecting a luminance for each color of a projected image projected from the projector unit onto the screen, and outputting the detection result, having a plurality of sensor units provided corresponding to the projector unit;
- the projector unit is The presence / absence of an adjacent projector unit arranged adjacent to the own projector unit is determined, a video signal of a specific pixel of a projection image by the adjacent projector unit, and the projection of the adjacent projector unit detected by the sensor unit From the luminance of the specific pixel of the image, generate a luminance correction table for matching the luminance of the projection image of the projector unit with the luminance of the projection image of the adjacent projector unit, and refer to the generated luminance correction table,
- a video signal correction unit that corrects the brightness of each color of the video signal input to the projector unit and output
- the brightness adjustment method of the multi-projection display system of the present invention is a brightness adjustment method of the multi-projection display system in which the projected images projected on the screen from a plurality of projector units are connected and displayed as one image, A plurality of sensor units provided corresponding to the projector unit for detecting the luminance for each color of the projected image projected on the screen from the projector unit and outputting the detection result,
- the projector unit is The presence / absence of an adjacent projector unit arranged adjacent to the own projector unit is determined, a video signal of a specific pixel of a projection image by the adjacent projector unit, and the projection of the adjacent projector unit detected by the sensor unit From the luminance of the specific pixel of the image, generate a luminance correction table for matching the luminance of the projection image of the projector unit with the luminance of the projection image of the adjacent projector unit, and refer to the generated luminance correction table, Correct the brightness for each color of the video signal input to the projector unit, This is a method of displaying an image by
- FIG. 1 is a plan view showing a configuration example of the multi-projection display system according to the first embodiment.
- FIG. 2 is a block diagram showing a configuration example of the projector unit shown in FIG.
- FIG. 3 is a flowchart showing a processing procedure of the video signal correction unit shown in FIG.
- FIG. 4 is a plan view showing a configuration example of the multi-projection display system according to the second embodiment.
- FIG. 5 is a block diagram showing a configuration example of the main control unit and the projector unit shown in FIG.
- FIG. 6 is a flowchart showing a processing procedure of the video signal correction unit shown in FIG.
- FIG. 7 is a block diagram illustrating a configuration example of a main control unit and a projector unit included in the multi-projection display system according to the third embodiment.
- FIG. 8 is a flowchart showing a processing procedure of the video signal correction unit shown in FIG.
- FIG. 9 is a plan view showing the configuration of the multi-projection display system of the first embodiment.
- FIG. 10 is a schematic diagram showing a configuration example of the projection display unit shown in FIG.
- FIG. 11 is a block diagram showing a configuration example of the projector unit shown in FIG.
- FIG. 12 is a flowchart showing a processing procedure of the video signal correction unit shown in FIG.
- FIG. 13 is a schematic diagram showing how the brightness adjustment is performed by the projector unit of the first embodiment.
- FIG. 14 is a plan view showing the configuration of the multi-projection display system of the second embodiment.
- FIG. 15 is a block diagram showing a configuration example of the main control unit and the projector unit shown in FIG.
- FIG. 16 is a schematic diagram illustrating an example of an image during normal display and an example of an adjustment image used in the multi-projection display system according to the second embodiment.
- FIG. 17 is a block diagram showing the configuration of the multi-projection display system of the third embodiment.
- FIG. 1 is a plan view showing a configuration example of the multi-projection display system according to the first embodiment
- FIG. 2 is a block diagram showing a configuration example of the projector unit shown in FIG.
- the multi-projection display system of the first embodiment includes a plurality of projector units 1 to 16, a plurality of sensor units 21 to 36, and adjacent information acquisition units 171 to 186.
- the sensor units 21 to 36 and the adjacent information acquisition units 171 to 186 are provided in one-to-one correspondence with the projector units 1 to 16, respectively.
- the adjacent information acquisition units 171 to 186 detect the projector unit arranged adjacent to the corresponding projector unit (hereinafter referred to as the adjacent projector unit) in the upper and lower directions of each projector unit. It is provided on each of the four surfaces in the left-right direction.
- adjacent information acquisition units 171-1 to 171-4 are provided correspondingly.
- reference numerals 61 to 77 in FIG. 1 indicate the sizes of the projected images projected from the projector units 1 to 16 on the screen, respectively.
- the sensor units 21 to 36 are installed at positions where the brightness of specific pixels of the projected images projected onto the screen from the projector units 1 to 16 can be detected.
- the projector units 1 to 16 each include a video signal correction unit 331, a video projection unit 351, and an adjacent information acquisition unit 171.
- a video signal is input to the projector units 1 to 16 from a video reproduction device (not shown) via the video signal input unit 81.
- the sensor units 21 to 36 detect the luminance for each color of the projected image projected on the screen from the video projection units 351 to 366, and output the detection result to the video signal correction units 331 to 346.
- the adjacent information acquisition units 171 to 186 determine the presence / absence of an adjacent projector unit, and output the determination result to the video signal correction units 331 to 346 as adjacent information.
- the video signal correction units 331 to 346 detect the video signal corresponding to the specific pixel of the projection image projected on the screen from the adjacent projector unit and the specific pixel of the projection image of the adjacent projector unit detected by the corresponding sensor unit. From the brightness, a brightness correction table for matching the brightness of the projection image of the projector unit with the brightness of the projection image of the adjacent projector unit is generated. Also, the video signal correction units 331 to 346 refer to the generated luminance correction table, correct the luminance for each color of the video signal input to the projector unit, and output the corrected luminance corrected video signal.
- the video projection units 351 to 366 project each color light on the screen according to the luminance correction video signals output from the video signal correction units 331 to 346.
- FIG. 3 is a flowchart showing a processing procedure of the video signal correction unit shown in FIG.
- the video signal correction units 331 to 346 first set a first direction set in advance for the projector unit based on the adjacent information output from the adjacent information acquisition unit corresponding to the projector unit.
- the presence / absence of the first adjacent projector unit adjacent to is determined (step A1).
- the first direction refers to the left direction or the right direction of the projector unit.
- the video signal correction units 331 to 346 include the video signal corresponding to a specific pixel of the projection image by the first adjacent projector unit and the first sensor detected by the corresponding sensor unit.
- the brightness correction table is generated from the brightness of specific pixels of the image projected by the adjacent projector unit (step A2).
- the video signal correcting units 331 to 346 correct the luminance for each color of the video signal input to the projector unit with reference to the luminance correction table generated in step A2, and the corrected luminance corrected video signal Is output (step A3).
- the video signal correction units 331 to 346 detect the second adjacent projector unit adjacent to the projector unit in the second direction that intersects the first direction. Existence is determined (step A4).
- the second direction refers to the downward direction or the upward direction of the projector unit.
- the video signal correction units 331 to 346 include the video signal corresponding to the specific pixel of the projection image by the second adjacent projector unit and the second sensor unit detected by the corresponding sensor unit.
- the brightness correction table is generated from the brightness of specific pixels of the image projected by the adjacent projector unit (step A5).
- step A5 the brightness for each color of the video signal input to the projector unit is corrected, and the corrected brightness corrected video signal is output (step A3).
- step A4 When it is determined in step A4 that there is no second adjacent projector unit, the video signal correction units 331 to 346 output the video signal input to the projector unit as it is without correction (step A6).
- each projector unit 1 to 16 autonomously adjusts the brightness of the projection image of the projector unit so that it matches the brightness of the projection image of the adjacent projector unit.
- the luminances of the projection images of the units 1 to 16 coincide with the luminances of the projection images of the projector units that are finally determined not to have the first and second adjacent projector units. That is, the brightness of the projected images of all projector units 1 to 16 projected on the screen can be matched.
- each projector unit 1 to 16 autonomously adjusts the brightness of the self-projected image so that the brightness matches the projected image of the adjacent projector unit. Even when a projector unit is added, the luminance adjustment processing load does not concentrate on the main control unit or the like. Therefore, the number of projector units can be increased relatively easily.
- FIG. 4 is a plan view showing a configuration example of the multi-projection display system according to the second embodiment
- FIG. 5 is a block diagram showing a configuration example of the main control unit and the projector unit shown in FIG.
- the multi-projection display system of the second embodiment includes a plurality of projector units 1 to 16, a plurality of sensor units 21 to 36, and a main control unit 82.
- the sensor units 21 to 36 are provided in one-to-one correspondence with the projector units 1 to 16, respectively.
- reference numerals 61 to 77 in FIG. 4 indicate the sizes of the projected images projected from the projector units 1 to 16 on the screen, respectively.
- the sensor units 21 to 36 are installed at positions where the brightness of specific pixels (outermost peripheral pixels) of the projected images projected from the projector units 1 to 16 onto the screen can be detected.
- the main control unit 82 includes a video signal division unit 301 and video signal transmission units 311 to 326.
- Each of the projector units 1 to 16 includes a video signal correction unit 331 and a video projection unit 351.
- the main control unit 82 receives a video signal from a video reproduction device (not shown) via the video signal input unit 81.
- the main controller 82 divides the input video signal and distributes the corresponding video signal to each of the projector units 1-16.
- the video signal dividing unit 301 divides the input video signal into video signals corresponding to the projector units 1 to 16, and the video signal is divided into one or more pixels on the outermost periphery of the projection image by each adjacent projector unit. A pixel signal is added, and a video signal including the added signal is distributed to the projector units 1 to 16, respectively.
- main controller 82 the presence / absence of adjacent projector units for each of projector units 1 to 16 is known.
- the video signal dividing unit 301 divides the input video signal into video signals corresponding to the projector units 1 to 16 and generates adjacent information indicating the presence / absence of adjacent projector units for each projector unit.
- the video signal transmitting units 311 to 326 transmit the video signal output from the video signal dividing unit 301 and adjacent information to the corresponding projector units 1 to 16, respectively.
- the sensor units 21 to 36 detect the luminance for each color of the projected image projected on the screen from the video projection units 351 to 366, and output the detection result to the video signal correction units 331 to 346.
- the video signal correction units 331 to 346 determine from the video signal of the outermost peripheral pixel of the projection image projected on the screen from the adjacent projector unit and the luminance of the outermost peripheral pixel of the projection image of the adjacent projector unit detected by the corresponding sensor unit. Then, a brightness correction table for matching the brightness of the projection image of the projector unit with the brightness of the projection image of the adjacent projector unit is generated. Also, the video signal correction units 331 to 346 refer to the generated luminance correction table, correct the luminance for each color of the video signal input to the projector unit, and output the corrected luminance corrected video signal.
- the video projection units 351 to 366 project each color light on the screen according to the luminance correction video signals output from the video signal correction units 331 to 346.
- FIG. 6 is a flowchart showing a processing procedure of the video signal correction unit shown in FIG.
- the video signal correction units 331 to 346 first first adjoin the projector unit in the first direction set in advance based on the adjacent information output from the video signal dividing unit 301.
- the presence / absence of an adjacent projector unit is determined (step B1).
- the first direction refers to the left direction or the right direction of the projector unit.
- the video signal correcting units 331 to 346 detect the first adjacent projector unit detected by the sensor unit corresponding to the video signal of the outermost peripheral pixel of the projection image by the first adjacent projector unit.
- the brightness correction table is generated from the brightness of the outermost peripheral pixel of the projected image by (Step B2).
- the video signal correction units 331 to 346 correct the luminance for each color of the video signal input to the projector unit with reference to the luminance correction table generated in step B2, and the corrected luminance corrected video signal Is output (step B3).
- the video signal correction units 331 to 346 determine the second adjacent projector unit adjacent to the projector unit in the second direction intersecting the first direction.
- the presence or absence is determined (step B4).
- the second direction refers to the downward direction or the upward direction of the projector unit.
- the video signal correction units 331 to 346 include the video signal of the outermost peripheral pixel of the projection image by the second adjacent projector unit and the second adjacent projector detected by the corresponding sensor unit.
- the brightness correction table is generated from the brightness of the outermost peripheral pixel of the projected image by the unit (step B5).
- the luminance correction table generated in step B5 is referred to correct the luminance for each color of the video signal input to the projector unit, and the corrected luminance corrected video signal is output (step B3).
- step B4 When it is determined in step B4 that there is no second adjacent projector unit, the video signal correction units 331 to 346 output the video signal input to the projector unit as it is without correction (step B6).
- each projector unit 1-16 uses the brightness of the projection image of its own projector unit to determine the brightness of the projection image of the adjacent projector unit.
- the brightness of the projection image of each projector unit 1 to 16 is that of the projection image of the projector unit that is finally determined not to have the first and second adjacent projector units. Match the brightness. That is, the brightness of the projected images of all projector units 1 to 16 projected on the screen can be matched.
- the luminance adjustment processing load does not concentrate on the main control unit 82 and the like. Therefore, the number of projector units can be increased relatively easily.
- the sensor units 21 to 36 since the brightness detection range of the projected image by each of the sensor units 21 to 36 is limited to the extent of the projected image projected on the screen from one projector unit, the sensor units 21 to 36 as in the background art. There is no need to increase the distance between the screen. Therefore, a thin and large screen multi-projection display system can be provided.
- the main control unit 82 supplies the adjacent information indicating the presence / absence of the adjacent projector unit to each of the projector units 1 to 16, which is described in the first embodiment.
- the adjacent information acquisition units 171 to 186 are not necessary. Therefore, a multi-projection display system can be configured easily and at a lower cost than in the first embodiment. (Third embodiment)
- a multi-projection display system according to a third embodiment will be described with reference to the drawings.
- FIG. 7 is a block diagram illustrating a configuration example of the main control unit and the projector unit included in the multi-projection display system according to the third embodiment.
- the multi-projection display system of the third embodiment differs from the multi-projection display system of the second embodiment shown in FIG. 4 in the configuration of the main control unit 82.
- Other configurations are the same as those of the multi-projection display system of the second embodiment.
- the multi-projection display system of the third embodiment includes a plurality of projector units 1 to 16, a plurality of sensor units 21 to 36, and a main control unit 82.
- the sensor units 21 to 36 are provided on a one-to-one basis corresponding to the projector units 1 to 16, respectively.
- the main control unit 82 includes a video signal division unit 301, an adjustment video signal generation unit 391, signal switching units 401 to 416, an adjustment control signal generation unit 392, and video signal transmission units 311 to 326.
- the projector units 1 to 16 include a video signal correction unit 331 and a video projection unit 351.
- the main control unit 82 receives a video signal from a video reproduction device (not shown) via the video signal input unit 81.
- the main control unit 82 divides the input video signal and distributes the corresponding video signal to each projector unit 1-16.
- the video signal dividing unit 301 divides the input video signal into video signals corresponding to the projector units 1 to 16 and generates adjacent information indicating the presence / absence of adjacent projector units for each projector unit.
- the adjustment video signal generation unit 391 generates a predetermined adjustment video signal.
- the adjustment video signal is a video signal for causing the projector units 1 to 16 to display an adjustment image used for luminance adjustment.
- the adjustment image is an image in which, for example, specific pixels are displayed with a predetermined color and predetermined luminance, and pixels other than the specific pixels are displayed with black (luminance level 0%).
- the adjustment control signal generator 392 outputs an adjustment control signal that instructs the projector units 1 to 16 to execute the brightness adjustment.
- the signal switching units 401 to 416 switch the output signal according to the adjustment control signal output from the adjustment control signal generation unit 392.
- the signal switching units 401 to 416 output the video signal supplied from the video signal dividing unit 301 during normal display, and output the adjustment video signal supplied from the adjustment video signal generation unit 391 during luminance adjustment.
- the video signal transmission units 311 to 326 transmit the video signal output from the signal switching units 401 to 416 and the adjustment information output from the adjacent information and adjustment control signal generation unit 392 to the corresponding projector units 1 to 16, respectively. To do.
- the sensor units 21 to 36 detect the luminance for each color of the projected image projected on the screen from the video projection units 351 to 366, and output the detection result to the video signal correction units 331 to 346.
- the video signal correction units 331 to 346 perform the video signal of the projection image projected on the screen from the adjacent projector unit and the projection image of the adjacent projector unit detected by the corresponding sensor unit at the time of brightness adjustment instructed by the adjustment control signal.
- the brightness correction table for matching the brightness of the projection image of the projector unit with the brightness of the projection image of the adjacent projector unit is generated from the brightness of the projector.
- the video signal correction units 331 to 346 refer to the generated luminance correction table, correct the luminance for each color of the video signal input to the projector unit, and output the corrected luminance corrected video signal.
- the video projection units 351 to 366 project each color light on the screen according to the luminance correction video signals output from the video signal correction units 331 to 346.
- FIG. 8 is a flowchart showing a processing procedure of the video signal correction unit shown in FIG.
- the video signal correction units 331 to 346 first determine whether it is during normal display or luminance adjustment based on the adjustment control signal output from the adjustment control signal generation unit 392 ( Step C1).
- the video signal correction units 331 to 346 correct the luminance for each color of the video signal input to the projector unit with reference to the luminance correction table, and output the corrected luminance corrected video signal ( Step C2).
- step C1 If it is determined in step C1 that the brightness is being adjusted, the video signal correction units 331 to 346 first, based on the adjacent information output from the video signal division unit 301, the projector unit in the first direction set in advance. The presence / absence of an adjacent first adjacent projector unit is determined (step C3).
- the first direction refers to the left direction or the right direction of the projector unit.
- the video signal correction units 331 to 346 detect the projection image of the first adjacent projector unit detected by the sensor unit corresponding to the video signal of the projection image by the first adjacent projector unit.
- the brightness correction table is generated from the brightness (step C4).
- the video signal correction units 331 to 346 detect the second adjacent projector unit adjacent to the projector unit in the second direction intersecting the first direction.
- the presence / absence is determined (step C6).
- the second direction refers to the downward direction or the upward direction of the projector unit.
- the video signal correction units 331 to 346 output the video signal of the projection image by the second adjacent projector unit and the projection image by the second adjacent projector unit detected by the corresponding sensor unit.
- the brightness correction table is generated from the brightness of (step C7).
- step C6 When it is determined in step C6 that there is no second adjacent projector unit, the video signal correction units 331 to 346 output the video signal input to the projector unit as it is without correction (step C8).
- each projector unit 1-16 adjusts the brightness of the projection image of its own projector unit to the adjacent projector unit.
- the brightness of the projected image of each projector unit 1 to 16 is that of the projector unit that is finally determined not to have the first and second adjacent projector units. It matches the brightness of the projected image. That is, the brightness of the projected images of all projector units 1 to 16 projected on the screen can be matched.
- the luminance adjustment processing load does not concentrate on the main control unit 82 and the like. Therefore, the number of projector units can be increased relatively easily.
- the sensor units 21 to 36 since the brightness detection range of the projected image by each of the sensor units 21 to 36 is limited to the extent of the projected image projected on the screen from one projector unit, the sensor units 21 to 36 as in the background art. There is no need to increase the distance between the screen. Therefore, a thin and large screen multi-projection display system can be provided.
- the main control unit 82 supplies the adjacent information indicating the presence / absence of the adjacent projector unit to each of the projector units 1 to 16, which is described in the first embodiment.
- the adjacent information acquisition units 171 to 186 are not necessary. Therefore, a multi-projection display system can be configured easily and at a lower cost than in the first embodiment.
- FIG. 9 is a plan view showing the configuration of the multi-projection display system of the first embodiment.
- the multi-projection display system of the first embodiment includes a plurality of projector units 1 to 16, a plurality of camera units 194 to 206, and adjacent information acquisition mechanical switches 211 to 226.
- the camera units 194 to 206 correspond to the sensor units 21 to 36 shown in FIG. 1, and the adjacent information acquisition mechanical switches 211 to 226 correspond to the adjacent information acquisition units 171 to 186 shown in FIG.
- the camera units 194 to 206 and the adjacent information acquisition mechanical switches 211 to 226 are provided in one-to-one correspondence with the projector units 1 to 16, respectively.
- the adjacent information acquisition mechanical switches 211 to 226 are provided on each of the four surfaces in the vertical and horizontal directions of the figure in order to detect the adjacent projector unit.
- the projector unit, the camera unit provided corresponding to the projector unit, and the adjacent information acquisition mechanical switch are referred to as a projection display unit.
- reference numerals 61 to 77 in FIG. 9 indicate the sizes of the projected images projected from the projector units 1 to 16 on the screen, respectively.
- FIG. 10 is a schematic diagram showing a configuration example of the projection display unit shown in FIG.
- FIG. 10 shows a configuration example of a projection display unit including a camera unit 194, adjacent information acquisition mechanical switches 211-1 to 211-4, and a housing 231 corresponding to the projector unit 1.
- the camera unit 194 is installed at a position where the luminance of a specific pixel of the projected image projected from the projector unit 1 onto the screen can be detected.
- the adjacent information acquisition mechanical switches 211-1 to 211-4 are provided on four surfaces in the vertical and horizontal directions with respect to the housing 231.
- FIG. 11 is a block diagram showing an example of the configuration of the projector unit shown in FIG.
- the projector units 1 to 16 include a video signal correction unit 331, a video projection unit 351, and adjacent information acquisition mechanical switches 211 to 226, respectively.
- camera units 21 to 36 provided corresponding to the projector units are installed.
- a video signal is input to the projector units 1 to 16 from a video reproduction device (not shown) via the video signal input unit 81.
- the camera units 21 to 36 capture the projection images projected on the screen from the video projection units 351 to 366, detect the luminance for each color of the projection images, and send the detection results to the video signal correction units 331 to 346. Output.
- the adjacent information acquisition mechanical switches 211 to 226 are turned ON when another projection display unit is arranged adjacent to the own projection display unit.
- the ON / OFF state is supplied to the video signal correction units 331 to 346 as the adjacent information.
- the video signal correction units 331 to 346 include video signals corresponding to special pixels of the projected image projected on the screen from the adjacent projector unit, and projected images projected on the screen from the adjacent projector unit photographed by the corresponding camera unit.
- a brightness correction table for matching the brightness of the projection image of the projector unit with the brightness of the projection image of the adjacent projector unit is generated from the brightness of the specific pixel.
- the video signal correction units 331 to 346 refer to the generated luminance correction table, correct the luminance for each color of the video signal input to the projector unit, and output the corrected luminance corrected video signal.
- the video projection units 351 to 366 project each color light on the screen according to the luminance correction video signals output from the video signal correction units 331 to 346.
- FIG. 12 is a flowchart showing a processing procedure of the video signal correction unit shown in FIG.
- the video signal correction units 331 to 346 first, for example, in the left direction (first direction) from the adjacent information indicated by the ON / OFF state of the corresponding adjacent information acquisition mechanical switch.
- the presence / absence of the first adjacent projector unit adjacent in the direction) is determined (step D1).
- the video signal correction units 331 to 346 include the video signal corresponding to the specific pixel of the projection image by the first adjacent projector unit and the first camera detected by the corresponding camera unit.
- the brightness correction table is generated from the brightness of the specific pixel of the projection image by the adjacent projector unit (step D2).
- the video signal correcting units 331 to 346 correct the luminance for each color of the video signal input to the projector unit with reference to the luminance correction table generated in step D2, and the corrected luminance corrected video signal Is output (step D3).
- step D4 When it is determined in step D1 that there is no first adjacent projector unit, the video signal correction units 331 to 346 determine, for example, from the adjacent information indicated by the ON / OFF state of the adjacent information acquisition mechanical switch The presence / absence of a second adjacent projector unit adjacent in the downward direction (second direction) is determined (step D4).
- the video signal correction units 331 to 346 include the video signal of the specific pixel of the projection image by the second adjacent projector unit and the second adjacent projector unit detected by the corresponding camera unit.
- the brightness correction table is generated from the brightness of the specific pixel of the projected image by (Step D5).
- step D5 the brightness for each color of the video signal input to the projector unit is corrected, and the corrected brightness corrected video signal is output (step D3).
- step D4 When it is determined in step D4 that there is no second adjacent projector unit, the video signal correction units 331 to 346 output the video signal input to the projector unit as it is without correction (step D6).
- FIG. 13 is a schematic diagram showing how brightness adjustment is performed by the projector unit of the first embodiment.
- each color light is screened according to the video signal without correcting the video signal input to the projector unit. (Step E1).
- the projector unit 102 Since the projector unit 102 has the adjacent projector unit 101 in the left direction, the video signal corresponding to a specific pixel of the projection image by the projector unit 101 and the projection image of the projector unit 101 detected by the corresponding camera unit A luminance correction table is generated from the luminance of a specific pixel, and the luminance correction table is referred to, the luminance for each color of the input video signal is corrected, and each color light is screened according to the corrected luminance corrected video signal. Project to.
- the projector unit 105 since the projector unit 105 has the adjacent projector unit 101 in the downward direction, the video signal corresponding to a specific pixel of the image projected by the projector unit 101 and the projector unit 101 detected by the corresponding camera unit.
- a brightness correction table is generated from the brightness of specific pixels of the projected image, the brightness for each color of the input video signal is corrected with reference to the brightness correction table, and each color light is corrected according to the corrected brightness correction video signal. Is projected onto the screen (step E2).
- the projector unit 103 since there is an adjacent projector unit 102 in the left direction, the projector unit 103 has a video signal corresponding to a specific pixel of an image projected by the projector unit 102 and the projector unit 102 detected by the corresponding camera unit.
- a luminance correction table is generated from the luminance of specific pixels of the projected image of the image, the luminance for each color of the input video signal is corrected with reference to the luminance correction table, and each color is corrected according to the corrected luminance corrected video signal. Project light onto the screen.
- the projector unit 106 since the projector unit 106 has the adjacent projector unit 105 in the left direction, the video signal corresponding to a specific pixel of the image projected by the projector unit 105 and the projector unit 105 detected by the corresponding camera unit.
- a luminance correction table is generated from the luminance of specific pixels of the projected image of the image, the luminance for each color of the input video signal is corrected with reference to the luminance correction table, and each color is corrected according to the corrected luminance corrected video signal. Project light onto the screen. Further, since the projector unit 109 has the adjacent projector unit 105 in the downward direction, the video signal corresponding to a specific pixel of the projection image by the projector unit 105 and the projector unit 105 detected by the corresponding camera unit. A brightness correction table is generated from the brightness of specific pixels of the projected image, the brightness for each color of the input video signal is corrected with reference to the brightness correction table, and each color light is corrected according to the corrected brightness correction video signal. Is projected onto the screen (step E3).
- each projector unit performs brightness adjustment according to the procedure shown in FIG. 12 until step E7, thereby completing brightness adjustment of all projector units 1 to 16 included in the multi-projection display system.
- FIG. 14 is a plan view showing the configuration of the multi-projection display system of the second embodiment
- FIG. 15 is a block diagram showing a configuration example of the main control unit and the projector unit shown in FIG.
- the multi-projection display system of the second embodiment includes a plurality of projector units 1 to 16, a plurality of photodiodes 151 to 166, and a main control unit 82.
- the photodiodes 151 to 166 are provided in one-to-one correspondence with the projector units 1 to 16, respectively.
- reference numerals 61 to 77 in FIG. 14 indicate the sizes of the projected images projected from the projector units 1 to 16 on the screen, respectively.
- the photodiodes 151 to 166 are installed at positions where the brightness of specific pixels (outermost peripheral pixels) of the projected images projected from the projector units 1 to 16 onto the screen can be detected.
- the main control unit 82 includes a video signal division unit 301, an adjustment video signal generation unit 391, signal switching units 401 to 416, an adjustment control signal generation unit 392, and video signal transmission units 311 to 326. ing.
- the projector units 1 to 16 include a video signal correction unit 331 and a video projection unit 351.
- the main control unit 82 receives a video signal from a video reproduction device (not shown) via the video signal input unit 81.
- the main control unit 82 divides the input video signal and distributes the corresponding video signal to each projector unit 1-16.
- the main control unit 82 knows whether there is an adjacent projector unit for each of the projector units 1-16.
- the video signal dividing unit 301 divides the input video signal into video signals corresponding to the projector units 1 to 16 and generates adjacent information indicating the presence / absence of adjacent projector units for each projector unit.
- the adjustment video signal generation unit 391 generates a predetermined adjustment video signal.
- the adjustment video signal is a video signal for causing the projector units 1 to 16 to display an adjustment image used for luminance adjustment.
- the adjustment image is an image in which, for example, specific pixels are displayed with a predetermined color and predetermined luminance, and pixels other than the specific pixels are displayed with black (luminance level 0%).
- FIG. 16 illustrates an example of an image displayed during normal display and an example of an adjustment image generated by the adjustment image signal generation unit illustrated in FIG. 15.
- the adjustment control signal generator 392 outputs an adjustment control signal that instructs the projector units 1 to 16 to execute the brightness adjustment.
- the signal switching units 401 to 416 switch the output signal according to the adjustment control signal output from the adjustment control signal generation unit 392.
- the signal switching units 401 to 416 output the video signal supplied from the video signal dividing unit 301 during normal display, and output the adjustment video signal supplied from the adjustment video signal generation unit 391 during luminance adjustment.
- the video signal transmission units 311 to 326 transmit the video signal output from the signal switching units 401 to 416 and the adjustment information output from the adjacent information and adjustment control signal generation unit 392 to the corresponding projector units 1 to 16, respectively. To do.
- the photodiodes 151 to 166 detect the luminance for each color of the projection image projected on the screen from the video projection units 351 to 366, and output the detection result to the video signal correction units 331 to 346.
- the video signal correction units 331 to 346 perform the video signal of the projected image projected from the adjacent projector unit to the screen and the adjacent projector unit detected by the corresponding photodiode from the adjacent projector unit to the screen at the luminance adjustment designated by the adjustment control signal.
- a brightness correction table for matching the brightness of the projection image of the projector unit with the brightness of the projection image of the adjacent projector unit is generated from the brightness of the projected image.
- the video signal correction units 331 to 346 refer to the generated luminance correction table, correct the luminance for each color of the video signal input to the projector unit, and output the corrected luminance corrected video signal.
- the video projection units 351 to 366 project each color light on the screen according to the luminance correction video signals output from the video signal correction units 331 to 346.
- the adjustment video only a specific pixel in the projection image is displayed with a predetermined color and a predetermined luminance. Therefore, it is possible to detect the luminance of the pixel using the photodiodes 151 to 166. Yes, the brightness of the image projected by the adjacent projector unit can be detected.
- FIG. 17 is a block diagram showing the configuration of the multi-projection display system of the third embodiment.
- the projector unit includes a video signal division unit 301, an adjustment video signal generation unit 391, signal switching units 401 to 416, an adjustment control signal generation unit 392, and video signal transmission units 311 to 326.
- the video signal and the adjacent information are supplied from the main control unit 82, and the video is projected according to the video signal supplied from the video signal dividing unit 301 during normal display, and supplied from the adjustment video signal generating unit 391 during brightness adjustment.
- a video is projected according to the adjustment video signal.
- the projection display unit includes a projector unit 1 and photodiodes 151-1 to 151-4.
- the projector unit 1 includes a video signal correction unit 331 and a video projection unit 351.
- the video projection unit 351 includes a laser light source driving unit 251, a scanning element driving unit 252, a laser light source 253, an optical system 254, a horizontal scanning element 255, and a vertical scanning element 256.
- the photodiodes 151-1 to 151-4 detect the luminance for each color of the projection image projected from the video projection unit 351 onto the screen, and output the detection result to the video signal correction unit 331.
- the video signal correction unit 331 detects the video signal of the projected image projected on the screen from the adjacent projector unit and the photodiodes 151-1 to 151-4 at the time of luminance adjustment instructed by the adjustment control signal from the main control unit 82.
- a brightness correction table for making the brightness of the projection image of the projector unit 1 coincide with the brightness of the projection image of the adjacent projector unit is generated from the brightness of the projection image projected on the screen from the adjacent projector unit.
- the video signal correction unit 331 corrects the luminance for each color of the video signal input to the projector unit with reference to the generated luminance correction table, and outputs the corrected luminance corrected video signal.
- the laser light source driving unit 251 generates a driving signal for the laser light source 253 according to the output signal of the video signal correction unit 331, and causes the laser light source 253 to emit laser light.
- the scanning element driving unit 252 generates driving signals for the horizontal scanning element 255 and the vertical scanning element 256 according to the horizontal synchronizing signal and the vertical synchronizing signal supplied from the video signal correcting unit 331, respectively.
- the output light of the laser light source 253 is scanned and projected on the screen via the optical system 254, the horizontal scanning element 255, and the vertical scanning element 256 to form a projected image.
- the third embodiment as in the second embodiment, only specific pixels of the projected image are displayed with a predetermined color and a predetermined luminance as the adjustment video, so that the photodiodes 151-1 to 151- are displayed. 4 can be used to detect the luminance of the pixel, and the luminance of the image projected by the adjacent projector unit can be detected.
- the multi-projection display is lower in cost than the first embodiment. A system can be realized.
- a multi-projection display system can be easily constructed at a lower cost than in the first embodiment.
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Abstract
Description
前記プロジェクタユニットから前記スクリーンに投射された投射画像の色毎の輝度を検出し、その検出結果を出力する、前記プロジェクタユニットに対応して設けられた複数のセンサユニットを有し、
前記プロジェクタユニットは、
自プロジェクタユニットに対して隣接して配置される隣接プロジェクタユニットの有無を判定し、前記隣接プロジェクタユニットによる投射画像の特定の画素の映像信号と、前記センサユニットで検出された前記隣接プロジェクタユニットの投射画像の前記特定の画素の輝度から、自プロジェクタユニットの投射画像の輝度を該隣接プロジェクタユニットの投射画像の輝度に一致させるための輝度補正テーブルを生成し、生成した輝度補正テーブルを参照して、自プロジェクタユニットに入力された映像信号の色毎の輝度を補正し、補正後の輝度補正映像信号を出力する映像信号補正部と、
前記映像信号補正部から出力された映像信号にしたがって各色光をスクリーンに投射して画像を表示する映像投射部と、
を有する。
前記プロジェクタユニットから前記スクリーンに投射された投射画像の色毎の輝度を検出し、その検出結果を出力する、前記プロジェクタユニットに対応して設けられた複数のセンサユニットを備えておき、
前記プロジェクタユニットが、
自プロジェクタユニットに対して隣接して配置される隣接プロジェクタユニットの有無を判定し、前記隣接プロジェクタユニットによる投射画像の特定の画素の映像信号と、前記センサユニットで検出された前記隣接プロジェクタユニットの投射画像の前記特定の画素の輝度から、自プロジェクタユニットの投射画像の輝度を該隣接プロジェクタユニットの投射画像の輝度に一致させるための輝度補正テーブルを生成し、生成した輝度補正テーブルを参照して、自プロジェクタユニットに入力された映像信号の色毎の輝度を補正し、
補正後の輝度補正映像信号にしたがって各色光をスクリーンに投射して画像を表示する方法である。
(第1の実施の形態)
図1は第1の実施の形態のマルチプロジェクションディスプレイシステムの一構成例を示す平面図であり、図2は図1に示したプロジェクタユニットの一構成例を示すブロック図である。
(第2の実施の形態)
次に第2の実施の形態のマルチプロジェクションディスプレイシステムについて図面を用いて説明する。
(第3の実施の形態)
次に第3の実施の形態のマルチプロジェクションディスプレイシステムについて図面を用いて説明する。
(第1実施例)
図9は、第1実施例のマルチプロジェクションディスプレイシステムの構成を示す平面図である。
(第2実施例)
次に本発明の第2実施例について図面を用いて説明する。
(第3実施例)
図17は、第3実施例のマルチプロジェクションディスプレイシステムの構成を示すブロック図である。
Claims (10)
- 複数のプロジェクタユニットからスクリーンに投射された投射画像をつなぎ合わせて1枚の画像として表示するマルチプロジェクションディスプレイシステムであって、
前記プロジェクタユニットから前記スクリーンに投射された投射画像の色毎の輝度を検出し、その検出結果を出力する、前記プロジェクタユニットに対応して設けられた複数のセンサユニットを有し、
前記プロジェクタユニットは、
自プロジェクタユニットに対して隣接して配置される隣接プロジェクタユニットの有無を判定し、前記隣接プロジェクタユニットによる投射画像の特定の画素の映像信号と、前記センサユニットで検出された前記隣接プロジェクタユニットの投射画像の前記特定の画素の輝度から、自プロジェクタユニットの投射画像の輝度を該隣接プロジェクタユニットの投射画像の輝度に一致させるための輝度補正テーブルを生成し、生成した輝度補正テーブルを参照して、自プロジェクタユニットに入力された映像信号の色毎の輝度を補正し、補正後の輝度補正映像信号を出力する映像信号補正部と、
前記映像信号補正部から出力された映像信号にしたがって各色光をスクリーンに投射して画像を表示する映像投射部と、
を有するマルチプロジェクションディスプレイシステム。 - 前記映像信号補正部は、
自プロジェクタユニットに対して、予め設定された第1方向で隣接する第1隣接プロジェクタユニットの有無を判定し、
前記第1隣接プロジェクタユニットが存在する場合、該第1隣接プロジェクタユニットによる投射画像の特定の画素に対応する映像信号と、対応するセンサユニットで検出された該第1隣接プロジェクタユニットによる投射画像の特定の画素の輝度から前記輝度補正テーブルを生成し、
前記第1隣接プロジェクタユニットが無い場合、前記第1方向と交差する第2方向で隣接する第2隣接プロジェクタユニットの有無を判定し、
前記第2隣接プロジェクタユニットが存在する場合、該第2隣接プロジェクタユニットによる投射画像の特定の画素に対応する映像信号と、対応するセンサユニットで検出された該第2隣接プロジェクタユニットによる投射画像の特定の画素の輝度から前記輝度補正テーブルを生成し、
前記第1隣接プロジェクタユニット及び前記第2隣接プロジェクタユニットが無い場合、自プロジェクタユニットに入力された映像信号を補正することなく、そのまま出力する請求項1記載のマルチプロジェクションディスプレイシステム。 - 前記プロジェクタユニットは、
前記隣接プロジェクタユニットの有無を判定し、その判定結果を前記隣接情報として前記映像信号補正部に出力する隣接情報取得部をさらに有する請求項1記載のマルチプロジェクションディスプレイシステム。 - 入力された映像信号を各プロジェクタユニットの投射画像に相当する映像信号に分割すると共に、前記分割後の映像信号及び前記プロジェクタユニット毎に対応する前記隣接プロジェクタユニットの有無を示す隣接情報を、対応するプロジェクタユニットにそれぞれ送信する主制御部をさらに有する請求項1記載のマルチプロジェクションディスプレイシステム。
- 前記主制御部は、
入力された映像信号を各プロジェクタユニットに対応する映像信号に分割すると共に、該分割後の映像信号に、それぞれの前記隣接プロジェクタユニットによる投射画像の最外周の1画素以上の画素信号を付加し、該付加信号を含む映像信号を、前記プロジェクタユニットにそれぞれ配信する請求項4記載のマルチプロジェクションディスプレイシステム。 - 前記主制御部は、
入力された映像信号を各プロジェクタユニットの投射画像に相当する映像信号に分割すると共に、前記プロジェクタユニット毎の前記隣接プロジェクタユニットの有無を示す隣接情報を生成する映像信号分割部と、
輝度調整時に用いる所定の調整用画像を前記プロジェクタユニットに表示させるための映像信号である調整用画像信号を生成する調整用映像信号生成部と、
前記プロジェクタユニットに輝度調整の実行タイミングを指示する調整制御信号を出力する調整制御信号生成部と、
前記調整制御信号にしたがって通常表示時は映像信号分割部から供給される映像信号を出力し、輝度調整時は前記調整用映像信号生成部から供給される前記調整用映像信号を出力する信号切替部と、
前記信号切替部から出力された映像信号、前記隣接情報及び前記調整制御信号生成部から出力された前記調整制御信号を対応するプロジェクタユニットにそれぞれ送信する映像信号送信部と、
を有する請求項4記載のマルチプロジェクションディスプレイシステム。 - 前記センサユニットは、フォトダイオードである請求項6記載のマルチプロジェクションディスプレイシステム。
- 前記映像投射部は、レーザ走査型プロジェクタである請求項1乃至7のいずれか1項記載のマルチプロジェクションディスプレイシステム。
- 複数のプロジェクタユニットからスクリーンに投射された投射画像をつなぎ合わせて1枚の画像として表示するマルチプロジェクションディスプレイシステムの輝度調整方法であって、
前記プロジェクタユニットから前記スクリーンに投射された投射画像の色毎の輝度を検出し、その検出結果を出力する、前記プロジェクタユニットに対応して設けられた複数のセンサユニットを備えておき、
前記プロジェクタユニットが、
自プロジェクタユニットに対して隣接して配置される隣接プロジェクタユニットの有無を判定し、前記隣接プロジェクタユニットによる投射画像の特定の画素の映像信号と、前記センサユニットで検出された前記隣接プロジェクタユニットの投射画像の前記特定の画素の輝度から、自プロジェクタユニットの投射画像の輝度を該隣接プロジェクタユニットの投射画像の輝度に一致させるための輝度補正テーブルを生成し、生成した輝度補正テーブルを参照して、自プロジェクタユニットに入力された映像信号の色毎の輝度を補正し、
補正後の輝度補正映像信号にしたがって各色光をスクリーンに投射して画像を表示するマルチプロジェクションディスプレイシステムの輝度調整方法。 - 前記プロジェクタユニットが、
自プロジェクタユニットに対して、予め設定された第1方向で隣接する第1隣接プロジェクタユニットの有無を判定し、
前記第1隣接プロジェクタユニットが存在する場合、該第1隣接プロジェクタユニットによる投射画像の特定の画素に対応する映像信号と、対応するセンサユニットで検出された該第1隣接プロジェクタユニットによる投射画像の特定の画素の輝度から前記輝度補正テーブルを生成し、
前記第1隣接プロジェクタユニットが無い場合、前記第1方向と交差する第2方向で隣接する第2隣接プロジェクタユニットの有無を判定し、
前記第2隣接プロジェクタユニットが存在する場合、該第2隣接プロジェクタユニットによる投射画像の特定の画素に対応する映像信号と、対応するセンサユニットで検出された該第2隣接プロジェクタユニットによる投射画像の特定の画素の輝度から前記輝度補正テーブルを生成し、
前記第1隣接プロジェクタユニット及び前記第2隣接プロジェクタユニットが無い場合、自プロジェクタユニットに入力された映像信号を補正することなく、そのまま出力する請求項9記載のマルチプロジェクションディスプレイシステムの輝度調整方法。
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Cited By (4)
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JP2014204173A (ja) * | 2013-04-01 | 2014-10-27 | キヤノン株式会社 | 画像処理装置および画像処理方法 |
JP2017129739A (ja) * | 2016-01-20 | 2017-07-27 | セイコーエプソン株式会社 | 画像投射システム、プロジェクター、及び、画像補正方法 |
US9723279B1 (en) | 2016-01-21 | 2017-08-01 | Seiko Epson Corporation | Projector and method of controlling projector |
WO2018167999A1 (ja) * | 2017-03-17 | 2018-09-20 | パナソニックIpマネジメント株式会社 | プロジェクタ及びプロジェクタシステム |
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EP2614650A1 (en) | 2010-09-10 | 2013-07-17 | Lemoptix SA | A device for projecting an image |
JP5644968B1 (ja) * | 2014-02-18 | 2014-12-24 | 富士ゼロックス株式会社 | 表示制御装置、方法およびプログラム |
US9781397B2 (en) * | 2015-10-05 | 2017-10-03 | Panasonic Intellectual Property Management Co., Ltd. | Projector and projector system |
JP6707870B2 (ja) * | 2016-01-20 | 2020-06-10 | セイコーエプソン株式会社 | 投写システムおよび投写位置検出方法 |
JP2023017206A (ja) * | 2021-07-26 | 2023-02-07 | セイコーエプソン株式会社 | プロジェクターの制御方法、及びプロジェクター |
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US9723279B1 (en) | 2016-01-21 | 2017-08-01 | Seiko Epson Corporation | Projector and method of controlling projector |
WO2018167999A1 (ja) * | 2017-03-17 | 2018-09-20 | パナソニックIpマネジメント株式会社 | プロジェクタ及びプロジェクタシステム |
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US20130229580A1 (en) | 2013-09-05 |
US8648964B2 (en) | 2014-02-11 |
JPWO2012073649A1 (ja) | 2014-05-19 |
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