WO2017145819A1

WO2017145819A1 - Display control device and display control method

Info

Publication number: WO2017145819A1
Application number: PCT/JP2017/004956
Authority: WO
Inventors: 高橋　巨成; 長良　徹
Original assignee: ソニー株式会社
Priority date: 2016-02-24
Filing date: 2017-02-10
Publication date: 2017-08-31

Abstract

This technology relates to a display control device and a display control method which make it possible to reduce color breakup regardless of a display device. A display control unit controls field sequential color display of each of a plurality of projectors which display images projected thereby in a stacking manner. This technology is applicable to a multi-projector system.

Description

Display control apparatus and display control method

The present technology relates to a display control device and a display control method, and more particularly, to a display control device and a display control method capable of reducing color breakup.

Conventionally, single-plate projectors that display in the field sequential color (FSC) method are known. In the FSC system, color images are displayed by projecting each color image in a time-sharing manner.

For example, there is a projector equipped with DMD (Digital Micromirror Device) as a single-plate display device. The DMD has a plurality of minute movable mirrors associated with each pixel of the image, and each mirror selectively rotates to reflect incident RGB light toward the lens. Thereby, the image of each color is projected on the screen by time division.

Further, Patent Document 1 discloses a technique regarding a projector using an LCOS (Liquid Crystal On Silicon) device as a single-plate display device. In a single-plate projector, one LCOS device continuously projects images of each color.

It is known that color breakup phenomenon occurs in such FSC projectors.

The color breakup phenomenon is a phenomenon in which a rainbow-like image can be seen instantaneously when the viewer moves the viewpoint rapidly while watching the image. This phenomenon is particularly noticeable in high-contrast images, such as images with a white object in front of a black background.

Therefore, in recent years, in order to reduce color breakup, the frame rate in the FSC system has been increased.

JP 2009-139494 A

However, display devices such as DMD and LCOS have limitations in achieving a high frame rate.

The present technology has been made in view of such a situation, and enables color breakup to be reduced regardless of a display device.

The display control apparatus according to one aspect of the present technology includes a display control unit that controls field sequential color display of each of a plurality of projectors that stack and display images projected by each.

A display control method according to one aspect of the present technology includes a step of controlling field sequential color display of each of a plurality of projectors that stack and display images projected by each.

In one aspect of the present technology, field sequential color display of each of a plurality of projectors that stack and display images projected by each is controlled.

According to one aspect of the present technology, color breakup can be reduced regardless of the display device.

It is a figure explaining the display of a FSC system. It is a figure which shows the example of a color breakup phenomenon. It is a figure which shows the mechanism of a color breakup phenomenon. It is a figure explaining the eye movement which causes a color breakup phenomenon. It is a figure explaining acceleration of a frame rate. It is a figure explaining stacking. It is a figure explaining stacking by two projectors. It is a figure which shows the example of the FSC display in the structure of FIG. It is a figure explaining stacking by three projectors. It is a figure which shows the example of the FSC display in the structure of FIG. It is a figure explaining the geometric correction of the image | video in stacking. It is a figure explaining the overlap area | region in stacking. It is a block diagram which shows the hardware structural example of the multi projector system to which this technique is applied. It is a block diagram which shows the function structural example of a multi projector system. It is a flowchart explaining a video output process. It is a figure explaining the sensing of a projection pattern. It is a flowchart explaining an FSC display control process. It is a figure which shows the example of the table referred in FSC display control processing. It is a figure explaining the extension of stacking. It is a block diagram which shows the function structural example of a computer.

Hereinafter, embodiments of the present technology will be described with reference to the drawings. The description will be given in the following order.
1. 1. Field sequential color display 2. Color breakup phenomenon and countermeasures 3. Stacking display Description of configuration related to this technology

<1. Field sequential color display>
A single-plate projector has a long history. For example, a projector including a DMD (Digital Micromirror Device) is known as a single-plate display device. In general, a field sequential color (FSC) method is used to project a color image with a single-plate projector.

For example, the projection of a color image has been realized by rotating a color wheel composed of transmissive filters for each color of RGB in a disk shape at high speed while synchronizing with a video signal. In this configuration, RGB color filters are irradiated by a light source, RGB color images are displayed on the DMD in a time-sharing manner, and the RGB color images are projected through the lens. By projecting the RGB color images at a high speed, the RGB color images are superimposed on the retina of the human eye so that they appear as color images.

In other words, in the FSC system, it can be said that a color image is shown in a pseudo manner using the visual characteristics of the human eye.

In recent years, a configuration for switching colors using a device that can be turned on and off at high speed, such as an LED (Light Emitting Diode) instead of a color wheel, is also known. Even in this configuration, the RGB colors are switched in synchronization with the video signal.

Also, a configuration using an LCOS (Liquid Crystal On Silicon) device as a single-plate display device is also known. Even in this configuration, devices that can be turned on and off at high speed, such as LEDs and laser light sources, are used.

As described above, it is important that the FSC system that displays the color image in a pseudo manner by switching the light source at high speed in synchronization with the video signal uses the visual characteristics of the human eye.

For example, in the FSC system, it is necessary to switch RGB colors faster (at a higher frequency) for a 60 Hz video signal. In this case, as shown in FIG. 1, it is necessary to switch the RGB color sections at a speed three times that of 60 Hz, that is, 180 Hz. As a result, a human can visually recognize a color equivalent to the color of the video by the 60 Hz video signal.

<2. Color Breakup Phenomenon and Countermeasures>
However, in the FSC system, it is known that image quality deterioration phenomenon called “color breakup”, “color break”, “color breaking”, “rainbow phenomenon” or “color breakup” occurs. .

The color breakup phenomenon appears remarkably in a high-contrast image such as an image with a white object in front of a black background as shown in FIG.

In the screen 10 shown on the left side of FIG. 2, there is a white object 11 in the form of a vertically long bar in front of a black background. In this state, when the object 11 moves toward the left at a relatively high speed, a rainbow-like image can be seen on the opposite side of the moving direction, that is, on the right side of the object 11, as shown on the right side of FIG. End up.

The color breakup phenomenon also occurs when the viewpoint is moved rapidly while the viewer is watching the video.

For example, in FIG. 3, when the viewer is watching the video without looking away from time t1 to time t3, white in which RGB colors are superimposed is visible. However, if the viewer looks away at time t3, for example, only B (blue) light cannot be seen, and yellow (R (red) at time t1 and G (green) at time t2 is superimposed) is visible. It becomes like this.

In this way, the color breakup phenomenon is a color that is not the original color due to the rapid movement of the object on the screen and the rapid movement of the viewpoint, with some of the RGB colors that are emitted in time division missing. It is caused by seeing.

Note that the mechanism by which the color breakup phenomenon is perceived is known to be caused by human eye movements. Examples of eye movement include the following three.

(1) Fixation
Keeping a static visual image in the fovea.

(2) Pursuit eye movement (PEM)
Smooth eye movement that occurs when one arbitrarily selected moving index is captured in the fovea.

(3) Saccadic eye movement (SEM)
A voluntary fast collaborative eye movement that occurs when the object seen in the peripheral vision is captured in the fovea.

Among these eye movements, (3) Impulsive eye movements (saccades) have been pointed out by previous studies to possibly cause a color breakup phenomenon.

FIG. 4 shows an example in which a saccade is likely to cause a color breakup phenomenon.

For example, as shown on the left side of FIG. 4, on the screen 20, a white round dot 21 and two white vertical bars 22 are arranged in front of a black background. The point 21 is moved left and right on the screen 20, and the subject follows this. At this time, if the screen 20 is a screen that is FSC-displayed by a single-plate projector, as shown on the right side of FIG. 4, a rainbow appears on the left and right of each of the two bars 22 due to a color breakup phenomenon. You will see a good picture.

As a measure against such a color breakup phenomenon, in recent years, the frame rate in the FSC system has been increased.

For example, as shown in FIG. 5, it has been proposed to switch the sections of each RGB color at a speed three times that of the example shown in FIG. 1, that is, 540 Hz.

From the line-of-sight followability of the saccade described above, it is difficult to perceive the color breakup phenomenon when the frame rate is 120 Hz or higher. However, when considering light emission of each RGB color within 1/120 s, the frame rate of 1/3 is 40 Hz. This is difficult to handle because it is not a frame rate for handling a normal video signal.

Therefore, as shown in FIG. 5, a normal video signal can be handled by setting the frame rate to 180 Hz.

However, in the case of FIG. 5, a display device that displays an image of each RGB color at 540 Hz and realizes a very high frame rate is required. In fact, the display devices that realize such a frame rate are currently limited to only a part of LCOS.

<3. Stacking display>
By the way, there is a so-called multi-projector system in which a plurality of projectors are cooperatively operated to project an image on a screen. In this multi-projector system, “stacking” is known in which the images projected by the projectors are displayed in an overlapping manner on the screen.

This method has been known since the prosperity of CRT projectors using CRT (Cathode Ray Tube) as a display device, and is currently used for the purpose of improving image brightness in projection mapping and digital cinema.

Specifically, in the multi-projector system, as shown in FIG. 6, a plurality of projectors 31 to 34 (four in the example of FIG. 6) project images on the screen 40. In stacking, the positions and optical shift functions of the projectors 31 to 34 are adjusted so that the images projected by the projectors 31 to 34 overlap to form one image. Thereby, the brightness | luminance of an image | video can be improved only the number of projectors.

<4. Description of configuration according to the present technology>
Based on the above, in this technology, color breakup is reduced not by increasing the frame rate, but by stacking images displayed by multiple projectors and FSC displays of each projector.

For example, in a configuration in which two

projectors

51 and 52 stack and display images on the screen 60 as shown in FIG. 7, the order of colors in the FSC display is changed by the

projectors

51 and 52, respectively. Specifically, as shown in FIG. 8, in the projector 51, the order of colors to be displayed in one frame is the order of R, G, and B, and in the projector 52, the colors to be displayed in one frame are displayed. The order is G, B, R.

This is equivalent to displaying each color of RGB in FSC display at a frame rate of 360 Hz, which is twice the frame rate of 180 Hz shown in FIG.

Further, in the configuration in which the three

projectors

51, 52, and 53 display stacking images on the screen 60 as shown in FIG. 9, the order of colors in the FSC display is changed in each of the

projectors

51, 52, and 53. Like that. Specifically, as shown in FIG. 10, in the projector 51, the order of colors to be displayed in one frame is the order of R, G, and B, and in the projector 52, the colors to be displayed in one frame are displayed. The order is G, B, and R, and in the projector 53, the order of colors displayed in one frame is B, R, and G.

This makes the RGB colors in FSC display equivalent to being displayed at a frame rate of 540 Hz, which is three times the 180 Hz frame rate shown in FIG.

In this way, by changing the order of colors in FSC display on each of multiple projectors that display images in a stacking manner, it is equivalent to displaying RGB colors at a high frame rate and reducing color breakup. Is possible.

Next, a method for realizing video stacking display in the configuration shown in FIGS. 7 and 9 will be described.

In the configuration shown in FIGS. 7 and 9, each of the plurality of projectors projects an image in a state shifted from the optical projection center. Therefore, even if the position of each projector and the optical shift function are adjusted, some of the images projected by each projector (particularly the edges) may be blurred or misaligned so that they all match. Is not easy.

Therefore, in each projector, as shown in FIG. 11, the images projected by the projectors are all matched by geometrically correcting the images. Image geometric correction can be performed from a GUI (Graphic User Interface) of the projector, a personal computer connected to the projector, or the like.

However, such manual geometric correction is time consuming and labor intensive and cannot always be performed completely.

Therefore, in the present technology, when stacking, a predetermined pattern is projected from the projector, and the pattern is sensed by the camera so that the geometric correction optimal for the image projected from the projector is performed.

In the following, it is assumed that, according to stacking, an overlap area 81 where the images projected by the two

projectors

51 and 52 shown in FIG. That is, it is assumed that the images displayed in the stacking manner are superimposed so that the images projected by all the projectors completely match.

Here, a hardware configuration example of a multi-projector system to which the present technology is applied will be described with reference to FIG.

13 includes an MHL-HDMI conversion unit 111, an HDMI selector 112, an ASIC 113, a mobile SOC 114, projectors 121 to 123, and a camera 131. The MHL-HDMI conversion unit 111 to the mobile SOC 114 function as a display control device that controls the video display of the projectors 121 to 123.

The MHL-HDMI conversion unit 111 converts a video of MHL (Mobile High-definition Link) standard into a video of HDMI (registered trademark) (High-Definition Multimedia Interface) standard. The converted video is supplied to the HDMI selector 112.

The HDMI selector 112 selects an HDMI (registered trademark) standard image input from the outside or an HDMI (registered trademark) standard image supplied from the MHL-HDMI conversion unit 111 and supplies the selected video to the ASIC 113.

An ASIC (Application Specific Integrated Circuit) 113 controls the projectors 121 to 123 and executes processing related to each video display.

The mobile SOC (System On On a Chip) 114 supplies data obtained by controlling the camera 131 to the ASIC 113.

The projectors 121 to 123 are each configured as a single-plate projector. The projectors 121 to 123 stack and display images projected by the projectors 121 to 123 on the projection surface under the control of the ASIC 113. In the example of FIG. 13, three projectors are provided. However, the present invention is not limited to this, and a plurality of projectors other than three may be provided.

The camera 131 images a predetermined pattern projected by each of the projectors 121 to 123 under the control of the mobile SOC 114, and supplies the imaging result to the mobile SOC 114.

Next, a functional configuration example of the multi-projector system 100 described above will be described with reference to FIG. In addition, about the structure similar to FIG. 13, the same code | symbol is attached | subjected and the description is abbreviate | omitted suitably.

The multi-projector system 100 shown in FIG. 14 includes a display control device 201, projectors 121 to 123, and a camera 131.

The display control apparatus 201 is realized by the above-described MHL-HDMI conversion unit 111 to mobile SOC 114, and controls the video display of the projectors 121 to 123.

The display control device 201 includes a sensing control unit 211, a correction information generation unit 212, a video output unit 213, a display control unit 214, and a storage unit 215.

The sensing control unit 211 senses images projected by the projectors 121 to 123 by controlling the camera 131 and supplies the sensing result to the correction information generation unit 212.

The correction information generation unit 212 generates correction information for geometrically correcting the images of the projectors 121 to 123 based on the sensing result from the sensing control unit 211. The correction information generation unit 212 supplies the generated correction information to the video output unit 213.

The video output unit 213 sets the correction information supplied from the correction information generation unit 212 in each of the projectors 121 to 123. The video output unit 213 outputs a video signal to each of the projectors 121 to 123 in which the correction information supplied from the correction information generation unit 212 is set.

The display control unit 214 controls the FSC display of each of the projectors 121 to 123.

The storage unit 215 stores a table 220 for controlling the FSC display of each projector. The display control unit 214 controls the FSC display of each projector by referring to the table 220.

With the configuration as described above, the display control apparatus 201 can realize video stacking display by a plurality of projectors and FSC display of each projector.

First, a video output process of the display control apparatus 201 for realizing video stacking display by a plurality of projectors will be described with reference to a flowchart of FIG.

In step S11, the video output unit 213 instructs each projector to project a predetermined pattern.

In step S12, the sensing control unit 211 controls the camera 131 to capture the pattern projected by each of the projectors 121 to 123 as shown in FIG. 16, and the corresponding point (specification in the pattern projected by each projector). ). In the example of FIG. 16, a pattern projected by the projector 121 onto the screen 250 is captured. Then, the sensing control unit 211 supplies the sensing result for each projector to the correction information generation unit 212.

In step S13, the correction information generation unit 212 generates correction information for each projector based on the sensing result from the sensing control unit 211.

The correction information includes information for performing geometric correction including warping and information for adjusting the optical shift function for each projector, as well as for correcting variations in the colors and brightness of the images between the projectors. Contains information.

The correction information generated for each projector is supplied to the video output unit 213.

In step S14, the video output unit 213 sets the correction information generated for each projector in each projector.

In step S15, the video output unit 213 outputs a video to each projector for which correction information is set.

According to the above processing, an image is output to each projector for which correction information is set, so that geometric correction optimum for the image projected from each projector can be performed. As a result, the images displayed in a stacking manner can be overlaid so that the images projected by all the projectors completely match.

In the above description, the correction information is set in each projector so that an image having undergone optimal geometric correction is projected. However, the video output unit 213 uses each projector based on the correction information. The image may be output to each projector after performing geometric correction optimal for the image output to the projector.

Next, the FSC display control process of the display control apparatus 201 for realizing the FSC display of each projector will be described with reference to the flowchart of FIG. Note that the processing in FIG. 17 starts when video projection is started by each projector.

In step S31, the display control unit 214 refers to the table 220 to set the FSC display of each of the projectors 121 to 123.

FIG. 18 shows an example of the table 220.

The table 220 includes six tables 1 to 6.

Each table shows the color and duty ratio in each of the first to third fields obtained by dividing one frame into three fields. That is, according to the table 220, the order of each color in one frame in the FSC display and the duty ratio of each color are set. In particular, the order of the colors in the FSC display is set to be a different color order for each projector.

Specifically, according to Table 1, the order of each color in one frame in FSC display is set to R, G, B, and the duty ratio is set to 33%. Further, according to Table 2, the order of each color in one frame in FSC display is set to R, G, and B, and the duty ratio is set to 30%, 50%, and 20%.

As described above, referring to any of the tables 1 to 6 for each of the projectors 121 to 123, the order of each color and the duty ratio in the FSC display of each projector are set.

For example, when the table 1 is referred to the projector 121, the table 3 is referred to the projector 122, and the table 5 is referred to the projector 123, each of the projectors 121 to 123 refers to FIG. The same FSC display as the projectors 51 to 53 described is performed.

Now, returning to the flowchart of FIG. 17, it is determined in step S32 whether it is necessary to reset the FSC display. This determination may be performed in accordance with a user operation, or may be performed by the display control apparatus 201 based on a predetermined standard.

If it is determined in step S32 that the FSC display needs to be reset, the process proceeds to step S33.

In step S33, the display control unit 214 resets the FSC display of each of the projectors 121 to 123 by referring to other tables in the table 220. Thereafter, the process returns to step S32, and it is again determined whether or not it is necessary to reset the FSC display.

If it is determined in step S32 that it is not necessary to reset FSC display, the settings for FSC display for each projector are confirmed, and the process ends. That is, each projector continues to project an image in the order of each color and the duty ratio in the set FSC display.

According to the above processing, during the stacking display by a plurality of projectors, the order of each color and the duty ratio in the FSC display of each projector are set. It is possible to reduce the color break-up as if RGB colors are displayed at a high frame rate.

In particular, the color breakup phenomenon is more noticeable as the luminance of the image is higher. However, according to the above processing, the color breakup can be reduced while improving the luminance of the image.

In the above, the order of each color in one frame in FSC display and the duty ratio of each color are set by the table 220, but the phase of each color in one frame in FSC display is set. Also good. Here, the phase indicates the start timing of each color in one frame in FSC display.

In the stacking display described above, three-dimensional measurement using the “Structured Light” method can be performed by sensing the pattern projected by each projector. Thereby, it is possible to realize stacking display even on an arbitrary surface such as a undulating curved surface or a dome-shaped screen, a corner between an indoor wall and a ceiling, and a curtain with unevenness.

For example, as shown on the left side of FIG. 19, one camera is provided for each projector, and three-dimensional measurement is performed on each projector, thereby performing geometric calibration, overlap estimation, and screen shape estimation. . Furthermore, color matching and blending can be performed as shown on the right side of FIG.

Geometric calibration is the estimation of internal and external variables of the projector and camera. Overlap estimation is attitude estimation between projectors. The screen shape estimation is an estimation of the screen shape and the attitude of the projector with respect to the screen. Color matching is brightness and color correction between projectors. Blending is color correction of the overlap region.

Even in such stacking display, by applying the FSC display of this technology, it is possible to reduce color breakup in a wider range of use cases.

The series of processes described above can be executed by hardware or software. When a series of processing is executed by software, a program constituting the software is installed in the computer. Here, the computer includes, for example, a general-purpose personal computer capable of executing various functions by installing a computer incorporated in dedicated hardware and various programs.

FIG. 20 is a block diagram showing an example of the hardware configuration of a computer that executes the above-described series of processing by a program.

In the computer, a CPU 901, a ROM (Read Only Memory) 902, and a RAM (Random Access Memory) 903 are connected to each other by a bus 904.

An input / output interface 905 is further connected to the bus 904. An input unit 906, an output unit 907, a storage unit 908, a communication unit 909, and a drive 910 are connected to the input / output interface 905.

The input unit 906 includes a keyboard, a mouse, a microphone, and the like. The output unit 907 includes a display, a speaker, and the like. The storage unit 908 includes a hard disk, a nonvolatile memory, and the like. The communication unit 909 includes a network interface or the like. The drive 910 drives a removable medium 911 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.

In the computer configured as described above, the CPU 901 loads the program stored in the storage unit 908 to the RAM 903 via the input / output interface 905 and the bus 904 and executes the program, for example. Is performed.

The program executed by the computer (CPU 901) can be provided by being recorded on a removable medium 911 as a package medium, for example. The program can be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.

In the computer, the program can be installed in the storage unit 908 via the input / output interface 905 by attaching the removable medium 911 to the drive 910. The program can be received by the communication unit 909 via a wired or wireless transmission medium and installed in the storage unit 908. In addition, the program can be installed in the ROM 902 or the storage unit 908 in advance.

The program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

The embodiments of the present technology are not limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present technology.

Moreover, this technique can take the following structures.
(1)
A display control apparatus comprising: a display control unit that controls field sequential color display of each of a plurality of projectors that stack and display images projected by each.
(2)
The display control device according to (1), wherein the display control unit sets the order of each color in field sequential color display of each of the projectors.
(3)
The display control device according to (2), wherein the display control unit sets the order of each color in the field sequential color display of each of the projectors so that the order of colors is different for each projector.
(4)
The display control device according to any one of (1) to (3), wherein the display control unit sets a duty ratio of each color in field sequential color display of each projector.
(5)
Each projector has a table for setting the order of each color and the duty ratio in field sequential color display,
The display control unit according to any one of (1) to (4), wherein the display control unit sets an order of colors and a duty ratio in field sequential color display of each projector by referring to the table.
(6)
The display control device according to (5), wherein the display control unit can reset the order of colors and the duty ratio in field sequential color display of each projector by referring to the table.
(7)
A correction information generating unit that generates correction information for correcting the image projected by each projector based on a sensing result of a predetermined pattern projected by each projector;
The display control device according to any one of (1) to (6), further comprising: a video output unit that sets the correction information for each projector and outputs a video signal to each of the projectors for which the correction information is set. .
(8)
The display control device according to (7), wherein the correction information generation unit generates the correction information so that all the images that are stacked and displayed by the projectors being projected become an overlap region.
(9)
The display control device according to any one of (1) to (8), wherein the projector is a single-plate projector.
(10)
The display control device according to any one of (1) to (9), wherein the display control unit sets a phase of each color in field sequential color display of each of the projectors.
(11)
A display control method including a step of controlling field sequential color display of each of a plurality of projectors for stacking and displaying images projected by each.

121 to 123 projector, 131 camera, 201 display control device, 211 sensing control unit, 212 correction information generation unit, 213 video output unit, 214 display control unit, 215 storage unit, 220 table

Claims

A display control apparatus comprising: a display control unit that controls field sequential color display of each of a plurality of projectors that stack and display images projected by each.
The display control device according to claim 1, wherein the display control unit sets an order of each color in field sequential color display of each of the projectors.
The display control device according to claim 2, wherein the display control unit sets the order of each color in the field sequential color display of each of the projectors so that the order of colors is different for each projector.
The display control apparatus according to claim 3, wherein the display control unit sets a duty ratio of each color in field sequential color display of each of the projectors.
Each projector has a table for setting the order of each color and the duty ratio in field sequential color display,
The display control device according to claim 4, wherein the display control unit sets an order of colors and a duty ratio in field sequential color display of each projector by referring to the table.
The display control device according to claim 5, wherein the display control unit enables resetting of an order of colors and a duty ratio in field sequential color display of each projector by referring to the table.
A correction information generating unit that generates correction information for correcting the image projected by each projector based on a sensing result of a predetermined pattern projected by each projector;
The display control apparatus according to claim 6, further comprising: a video output unit configured to set the correction information for each projector and to output a video signal to each of the projectors for which the correction information is set.
The display control apparatus according to claim 7, wherein the correction information generation unit generates the correction information such that all the images that are displayed in a stacking manner by being projected by each of the projectors are overlapped.
The display control apparatus according to claim 1, wherein the projector is a single-plate projector.
The display control apparatus according to claim 1, wherein the display control unit sets a phase of each color in a field sequential color display of each of the projectors.
A display control method including a step of controlling field sequential color display of each of a plurality of projectors for stacking and displaying images projected by each.