Image display system and image display method

Abstract

An image display system enables multiple image display devices with different machine characteristics to display images separately, and the image display system comprises: an external light detection device for detecting external light; and an image adjustment device for making adjustments based on the machine characteristics and the detected external light so that at least one of contrast, chromaticity and brightness is displayed continuously between the images respectively displayed on the multiple image display devices.

Description

Technical Field

[0001] The present disclosure relates to an image display system and an image display method including a plurality of image display devices having different machine characteristics. Background Art

[0002] Patent document 1 discloses an interactive indoor performance and game system, which is configured to provide an engaging and immersive multimedia performance or demonstration indoors. The system of patent document 1 includes a controller for selectively operating a display device, a video projector, an audio system (speaker, etc.), and other performance components (light source, fan, mechanical device, etc.).

[0003] Prior Art Literature

[0004] Patent Literature

[0005] Patent Document 1: U.S. Patent No. 10004984 Summary of the invention

[0006] The system of Patent Document 1 includes a display and a projector. However, these have different machine characteristics. Here, the so-called "machine characteristics" refer to the display characteristics of the machine including the relationship between the illumination of external light and the contrast (dynamic range) of the image based on the image display device, and the influence of the chromaticity of the external light on the chromaticity of the image based on the image display device. Therefore, due to conditions such as external light, the continuity of contrast or chromaticity between the two display images displayed by the display and the projector may not be guaranteed, and the sense of immersion in the performance or game is damaged.

[0007] The present invention provides an image display system and an image display method for improving the continuity between displayed images by each image display device in an image display system including a plurality of image display devices having different machine characteristics.

[0008] The image display system according to the first aspect of the present disclosure enables a plurality of image display devices having different machine characteristics to display respective images. The image display system comprises: an external light detection device for detecting external light; and an image adjustment device for adjusting, based on the machine characteristics and the detected external light, such that the images displayed on the plurality of image display devices are displayed continuously with respect to at least one of contrast, chromaticity, and brightness.

[0009] The image display system according to the second aspect of the present disclosure causes a plurality of image display devices to display images respectively. The image display system comprises: an image adjustment device, which divides a predetermined original image into a plurality of images and causes a plurality of image display devices to display the divided images respectively, so that when a user views the divided images from the user's viewpoint, the divided images constitute a mutually continuous original image.

[0010] Therefore, the image display system of the present disclosure can improve the continuity between displayed images based on a plurality of image display devices having different machine characteristics. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a block diagram showing a configuration example of the image display system 1 according to the first embodiment.

[0012] Figure 2A Yes means Figure 1 A front view of an appearance example of the image display system 1.

[0013] Figure 2B Yes means Figure 1 A side view of an appearance example of the image display system 1.

[0014] Figure 3 Yes means Figure 1 A block diagram of a detailed structural example of the image adjustment device 20.

[0015] Figure 4 Yes means Figure 1 FIG. 5 is a diagram showing an example of a data structure of device characteristic data stored in the device characteristic database memory 30.

[0016] Figure 5A Yes means Figure 1 A front view of an example of the contrast correction operation in the image display system 1.

[0017] Figure 5B Yes means Figure 1 A front view of an example of the contrast correction operation in the image display system 1.

[0018] Figure 5C Yes means Figure 1 A front view of an example of the contrast correction operation in the image display system 1.

[0019] Figure 5D Yes means Figure 1 A front view of an example of the contrast correction operation in the image display system 1.

[0020] Figure 6 This is a block diagram showing a configuration example of a video display system 1A according to the second embodiment.

[0021] Figure 7 Yes means Figure 6 A block diagram of a detailed structural example of an image adjustment device 20A.

[0022] Fig. 8A Yes means Figure 6 A CIE chromaticity diagram showing an example of the operation of chromaticity correction in the image display system 1A.

[0023] Figure 8B yes Fig. 8A Magnified image of .

[0024] Fig. 9 This is a block diagram showing a configuration example of a video display system 1B according to the third embodiment.

[0025] Fig. 10A Yes means Fig. 9 A top view of the positional relationship among the projector 51, display 52, screen 60 and user 80 in the image display system 1B.

[0026] Fig. 10B Yes means Fig. 9 A side view showing the positional relationship among a projector 51, a display 52, a screen 60 and a user 80 in an image display system 1B.

[0027] Fig.11 Yes means Fig. 9 A projection diagram showing an operation example of the image display system 1B.

[0028] Fig.12 It is a plan view showing a configuration example of a video display system 1C according to the fourth embodiment.

[0029] Fig.13A Yes means Fig.12 A top view showing the positional relationship between the structural elements of the image display system 1C and the user 80.

[0030] Fig. 13B Yes means Fig.12 A projection diagram showing an example of a splitting action in the image display system 1C.

[0031] Fig. 13C Yes means Fig.12 A projection diagram of another operation example of the splitting operation in the image display system 1C.

[0032] Fig.14A It is a plan view showing a configuration example of a video display system 1D according to the fifth embodiment.

[0033] Fig. 14B Yes means Fig.14AA side view of an appearance example of an image display system 1D.

[0034] Fig.15A Yes means Fig.14A The image display system ID is a top view of the positional relationship among the display 52, the screen 60, and the user 80 when the viewpoint of the user 80 is shifted to the left.

[0035] Fig. 15B Yes means Fig.14A A projection diagram showing an operation example of the image display system 1D. DETAILED DESCRIPTION

[0036] The following describes the implementation in detail with appropriate reference to the accompanying drawings. However, unnecessary detailed descriptions such as detailed descriptions of known matters and repeated descriptions of substantially the same structures may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art.

[0037] In addition, the inventor provides the drawings and the following description in order to facilitate a full understanding of the present disclosure by those skilled in the art, and does not intend to limit the subject matter described in the claims by these.

[0038] (Implementation Method 1)

[0039] Below, refer to Figure 1 to Figure 5D , implementation mode 1 is described. First, use Figure 1 to Figure 4 , the structure of the image display system 1 involved in embodiment 1 is described.

[0040] [1-1. Structure]

[0041] Figure 1 1 is a block diagram showing a configuration example of the image display system 1 according to the first embodiment. Figure 2A as well as Figure 2B Yes means Figure 1 A front view and a side view of an appearance example of the image display system 1 are shown.

[0042] exist Figure 1 , Figure 2A as well as Figure 2B In the embodiment, the image display system 1 includes: a media server 10, an image adjustment device 20, a machine characteristic database storage 30, an illuminance sensor 40, i.e., an external light detection device, a group of a projector 51 and a display 52, i.e., a plurality of image display devices, and a screen 60. The projector 51 is an example of a projection type image display device and a first image display device, and the display 52 is an example of a light emitting type image display device and a second image display device.

[0043] The media server 10 outputs a first image signal including a first image content to be displayed by the projector 51 and a second image signal including a second image content to be displayed by the display 52 to the image adjustment device 20. The device characteristic database memory 30 includes a database for storing device characteristic data of the projector 51 and the display 52. ​​In the present embodiment, the device characteristic database memory 30 outputs the device characteristic data of the projector 51 and the display 52, that is, the external light contrast characteristics (described later), to the image adjustment device 20. The illuminance sensor 40 detects the current illuminance of external light on the screen 60 and outputs illuminance data indicating the illuminance to the image adjustment device 20.

[0044] The image adjustment device 20 obtains contrast setting values ​​corresponding to the projector 51 and the display 52, respectively, based on the device characteristic data from the device characteristic database memory 30 and the illuminance data from the illuminance sensor 40, and outputs them to the projector 51 and the display 52 as first and second contrast information, respectively. These contrast setting values ​​are obtained so that the difference in contrast between the display images of the projector 51 and the display 52 is small. In addition, the image adjustment device 20 outputs the first and second image signals from the media server 10 to the projector 51 and the display 52, respectively. The projector 51 and the display 52 change their own contrast setting values ​​according to the first and second contrast information from the image adjustment device 20. In addition, the projector 51 displays the first display image according to the first image signal from the image adjustment device 20, and the display 52 displays the second display image according to the second image signal from the image adjustment device 20.

[0045] The first and second video contents are stored in the internal memory of the media server 10, or are acquired by the media server 10 via a network (not shown). In addition, the machine characteristic database memory 30 may also be included in the video adjustment device 20. Furthermore, in order to acquire the machine characteristic data from the machine characteristic database memory 30, the video adjustment device 20 may acquire the identification code indicating the machine from the projector 51 and the display 52, and request the machine characteristic data of the corresponding machine.

[0046] Figure 3 Yes means Figure 1 A block diagram of a detailed structural example of the image adjustment device 20. Figure 3 In the embodiment, the image adjustment device 20 includes: first and second input buffers 211 , 212 , first and second image information extractors 221 , 222 , first and second output buffers 231 , 232 , and a correction value calculator 240 .

[0047] Figure 3In the embodiment, the first input buffer 211 inputs the first image signal from the media server 10, temporarily stores it, and outputs it to the first image information extractor 221 and the first output buffer 231. The first output buffer 231 temporarily stores the input first image signal, and outputs it to the projector 51. The first image information extractor 221 extracts image content information such as average brightness, contrast, and chromaticity of the image content contained in the input first image signal, and outputs it to the correction value calculator 240. Similarly, the second input buffer 212 inputs the second image signal from the media server 10, temporarily stores it, and outputs it to the second image information extractor 222 and the second output buffer 232. The second output buffer 232 temporarily stores the input second image signal, and outputs it to the display 52. ​​The second image information extractor 222 extracts image content information of the image content contained in the input second image signal, and outputs it to the correction value calculator 240.

[0048] The correction value calculator 240 obtains contrast setting values ​​for the projector 51 and the display 52 based on the input machine characteristic data and illumination data so as to reduce the contrast difference between the display images of the projector 51 and the display 52, and outputs first contrast information indicating the contrast setting value of the projector 51 to the projector 51 and outputs second contrast information indicating the contrast setting value of the display 52 to the display 52.

[0049] Figure 4 Yes means Figure 1 FIG. 5 is a diagram showing an example of a data structure of device characteristic data stored in the device characteristic database memory 30. Figure 4 The image display device to which the contrast setting value is set is a predetermined value, i.e., a contrast setting value. When the external light illumination on the screen 60 is a certain value, the value of the contrast ratio of the displayed image (hereinafter referred to as contrast) is what value (hereinafter referred to as "external light contrast characteristic") is. For example, when the external light illumination on the screen 60 is 1 lux, the contrast of the displayed image of the display 52 is about 4000, and the contrast of the displayed image of the projector 51 is about 700.

[0050] [1-2. Action]

[0051] The operation of the image display system 1 configured as described above will be described below.

[0052] Figure 5A to Figure 5D Yes means Figure 1 A front view of an example of the contrast correction operation in the image display system 1. Figure 5AThe figure shows a display example of images displayed by the projector 51 and the display 52. ​​The first and second display images 71 and 72 are first and second image contents that divide an image content into two regions based on the positional relationship between the projector 51 and the display 52, and the divided first image signal containing the first image content is output to the projector 51, and the second image signal containing the second image content is output to the display 52 for display.

[0053] Figure 5B 51 is a front view showing an example of display of an image in a dark external light environment. Figure 4 Therefore, for example, in a dark environment where the illumination of the external light is less than 0.1 lux, the contrast of the projector 51 is higher than the contrast of the display 52. ​​As a result, the first display image 71 of the projector 51 is as shown in FIG. Figure 5B As shown, the second display image 72 has a higher contrast than the second display image 72 of the display 52. ​​As a result, a difference in contrast occurs between the two display images, and the continuity of the two display images is impaired.

[0054] Therefore, the image adjustment device 20 corrects the contrast difference as follows based on the external light contrast characteristics from the device characteristic database memory 30 and the illuminance data from the illuminance sensor 40 . Figure 5C This figure shows an example of a display of an image after contrast correction has been performed.

[0055] Specifically, the correction value calculator 240 of the image adjustment device 20 outputs first contrast information indicating a contrast setting value lower than a specified value to the projector 51 that displays the first display image 71 having a higher contrast than the second display image 72 of the display 52 under the current illumination. The projector 51 lowers the contrast setting value based on the input first contrast information, so that the contrast of the first display image 71 of the projector 51 is reduced to approach the contrast of the second display image 72 of the display 52. ​​Here, the contrast setting value of the first contrast information output to the projector 51 is set to a value that makes the contrast of the display images of the projector 51 and the display 52 substantially consistent. Thus, as Figure 5C As shown, the continuity associated with the contrast of these displayed images can be improved.

[0056] Figure 5DThis is a front view showing an example of display of an image in an environment with brighter external light. For example, in a brighter environment where the illumination of external light exceeds 0.2 lux, the contrast of the projector 51 is lower than the contrast of the display 52, and the continuity of the two display images based on the projector 51 and the display 52 is impaired. Therefore, the correction value calculator 240 of the image adjustment device 20 outputs second contrast information indicating a contrast setting value lower than a specified value to the display 52 that displays the second display image 72 having a higher contrast than the first display image 71 of the projector 51 under the current illumination. As a result, similar to the case of an environment with darker external light, the contrast of the second display image 72 of the display 52 is reduced and approaches the contrast of the first display image 71 of the projector 51. Here, by setting the contrast setting value of the second contrast information output to the display 52 to a value that makes the contrast of the display images of the projector 51 and the display 52 substantially consistent, it is possible to Figure 5C As shown, the continuity associated with the contrast of the two displayed images is improved.

[0057] Furthermore, the correction value calculator 240 may set a predetermined lower limit value for the contrast setting value in order to prevent the contrast setting value of the image display device from being excessively lowered and the displayed image itself from becoming unclear.

[0058] [1-3. Effects, etc.]

[0059] As described above, in this embodiment, the image display system 1 changes the contrast setting value of each image display device based on the illumination of the external light detected by the external light detection device, so that the difference in contrast between two displayed images between two image display devices having different external light contrast characteristics becomes smaller. Thus, the difference in contrast between the two displayed images can be reduced, and the continuity related to the contrast between the two displayed images can be improved.

[0060] (Implementation Method 2)

[0061] Figure 6 This is a block diagram showing a configuration example of a video display system 1A according to the second embodiment. Figure 7 Yes means Figure 6 The image display system 1A is similar to the image display system 20A in the following aspects. Figure 1 The image display system 1 is different.

[0062] (1) As the external light detection device, a camera sensor 40A is provided instead of the illuminance sensor 40 .

[0063] (2) The device characteristic database memory 30A outputs the external light chromaticity characteristic as device characteristic data to the correction value calculator 240A of the image adjustment device 20A, instead of the external light contrast characteristic.

[0064] (3) The correction value calculator 240 is replaced with a correction value calculator 240A. Figure 6 In the embodiment, the camera sensor 40A replaces the external light illumination on the screen 60, detects the chromaticity and brightness of the external light, and outputs the external light information to the image adjustment device 20A.

[0065] like Figure 7 As shown, the image adjustment device 20A includes Figure 3 The image adjustment device 20 further includes first and second image converters 251 and 252. The correction value calculator 240A obtains a chromaticity correction value that reduces the chromaticity difference between the first and second display images 71 and 72 based on the external light chromaticity characteristics from the machine characteristic database memory 30A and the external light information from the camera sensor 40A, and outputs the chromaticity correction value to the first and second image converters 251 and 252.

[0066] use Fig. 8A as well as Figure 8B , the chromaticity correction operation of the image display system 1A is described. Fig. 8A Yes means Figure 6 A CIE chromaticity diagram showing an example of the operation of chromaticity correction in the image display system 1A. Figure 8B yes Fig. 8A First, consider a case where both the projector 51 and the display 52 display an image of the same color (green) of point P1. Point P2 represents the chromaticity (blue) of external light on the screen 60 detected by the camera sensor 40A.

[0067] Fig. 8A In the figure, when the projector 51 projects an image of the color of point P1 onto the screen 60, external light of the color of point P2 is reflected on the screen 60, so the display color of the image displayed by the projector 51 is shifted in the direction of point P2 and becomes the color of point P3. On the other hand, the second display image 72 based on the display 52 is less susceptible to the influence of external light than the projector 51, and basically displays an image of the color of point P1. In this way, the projector 51 is more susceptible to the influence of external light than the display 52, so a chromaticity difference occurs between the two image display devices. This chromaticity difference occurs for images of any color, so the display image based on the projector 51 becomes a bluish image compared to the display image based on the display 52. ​​In this way, a chromaticity difference occurs between the two display images of the two image display devices that are different in the ease of accepting the influence of external light (external light chromaticity characteristics), and the continuity of the two display images is impaired.

[0068] Therefore, the image adjustment device 20A is as follows Figure 8BAs shown, the color of point P1 of the first display image 71 displayed on the projector 51 is shifted toward point P4 in the opposite direction to point P2. As a result, the color displayed in the first display image 71 of the projector 51 is synthesized with the external light of the color of point P2 to form the color shown by point P5. Furthermore, the color of point P1 of the second display image 72 displayed on the display 52 is shifted from point P1 to point P2 to form the color of point P5. As a result, the projector 51 and the display 52 both display the same color of point P5, relative to the image content displaying the same color of point P1. By performing this correction on the entire image, the difference in chromaticity generated between the two display images can be reduced, and the continuity related to chromaticity between the two first and second display images 71 and 72 can be improved.

[0069] Specifically, the correction value calculator 240A calculates the first and second correction values ​​for shifting the color as described above based on the machine characteristic data (including the external light chromaticity characteristics) from the machine characteristic database memory 30A and the external light information from the camera sensor 40A, and outputs them to the first and second image converters 251 and 252, respectively. In response to this, the first and second image converters 251 and 252 shift the chromaticity of the image signal input from the first and second input buffers 211 and 212 by the first and second correction values, and output the corrected first and second image signals to the projector 51 and the display 52 via the first and second output buffers 231 and 232, respectively. As a result, the projector 51 and the display 52 display two display images with improved continuity related to chromaticity. In addition, the first and second image converters 251 and 252 of the image display system 1A according to the present embodiment may also correct and convert the contrast of the first and second display images 71 and 72. Thus, similarly to the first embodiment, the difference in contrast between the first and second display images 71 and 72 can be reduced, and the continuity related to the contrast can be improved.

[0070] (Implementation method 3)

[0071] Fig. 9 This is a block diagram showing a configuration example of a video display system 1B according to the third embodiment. Fig. 9 In the embodiment, the image display system 1B is different from the image display system 1 in the following aspects.

[0072] (1) An image adjustment device 20B is provided in place of the image adjustment device 20 , and the image adjustment device 20B further includes an image splitter 260 .

[0073] (2) The media server 10 outputs an integrated image signal including an integrated image content to the image segmenter 260 of the image adjustment device 20B.

[0074] (3) The video divider 260 divides the integrated video content included in the input integrated video signal into two video contents, and outputs the two video contents as video signals to the first and second input buffers 211 and 212 , respectively.

[0075] (4) The image adjustment device 20B further includes first and second image converters 251B and 252B, and includes a correction value calculator 240B instead of the correction value calculator 240 .

[0076] Fig. 10A as well as Fig. 10B They are respectively Fig. 9 FIG. 1 is a top view and a side view showing the positional relationship between the projector 51, the display 52, the screen 60 and the user 80 in the image display system 1B. As in the first and second embodiments, the projector 51 projects an image on the screen 60. However, as shown in FIG. Fig. 10A In the case where the display 52 and the screen 60 overlap, if the first display image 71 is projected on the entire area that the projector 51 can project, the first display image 71 is also projected on the display 52. ​​Therefore, the projector 51 projects an image only on the area visible to the user 80 in the screen 60, and does not project an image (set to black display) on the areas outside the area.

[0077] Fig. 10A as well as Fig. 10B In the screen 60 , the viewpoint of the user 80 is at a predetermined position. The area visible from the viewpoint of the user 80 is referred to as a projection area 91 , and the area hidden from the display 52 and invisible to the user 80 is referred to as a shielding area 92 .

[0078] The image adjustment device 20B divides and outputs the integrated image content based on the positional relationship among the projector 51, the screen 60, the display 52, and the predetermined viewpoint position of the user 80 so that the display 52 and the shielding area 92 exactly overlap from the user 80. Specifically, first, the image divider 260 divides the integrated image content included in the integrated image signal from the media server 10 into an area displayed on the display 52 and an area displayed on the projection area 91 of the screen 60 via the projector 51.

[0079] The correction value calculator 240B obtains a first correction value, which is a parameter for deforming the first image content so that the occlusion area 92 and the display 52 overlap exactly as viewed by the user 80, based on the positional relationship among the projector 51, the screen 60, the display 52, and the predetermined viewpoint of the user 80, and outputs the first correction value to the first image converter 251B. The deformation includes parallel movement in the plane direction of the screen 60, enlargement and reduction, and geometric transformations such as trapezoidal deformation. The first image converter 251B deforms the first image content displayed on the projector 51 according to the first correction value from the correction value calculator 240B, and outputs the deformed first image content to the projector 51 via the first output buffer 231.

[0080] Furthermore, the correction value calculator 240B obtains the second correction value, which is the amount of vertical and horizontal shift of the second image content, and outputs it to the second image converter 252B. The second image converter 252B shifts the second image content displayed on the display 52 according to the second correction value from the correction value calculator 240B. In the present embodiment, the second image content displayed on the display 52 is not shifted, so the second correction value is 0, and the second image converter 252B directly outputs the second image signal from the second input buffer 212.

[0081] Furthermore, the image adjustment device 20B performs contrast correction on the divided first and second image contents in the same manner as in the first embodiment, and outputs the first and second image signals to the projector 51 and the display 52. ​​In addition, the above-mentioned division boundary may be a predetermined boundary line obtained in advance based on the positional relationship between the projector 51, the screen 60, the display 52, and a predetermined viewpoint position.

[0082] Fig.11 Yes means Fig. 9 A projection diagram showing an operation example of the image display system 1B. Fig.11 (a) shows the first display image 71 input to the projector 51, Fig.11 (b) shows the second display image 72 input to the display 52. ​​The first display image 71 is displayed on the projection area 91 of the screen 60, and the second display image 72 is displayed on the display 52 overlapping with the shielding area 92 of the screen 60, so when the user 80 sees it from the user 80's point of view, Fig.11 As shown in (c), a continuous image of the first display image 71 and the second display image 72 can be observed.

[0083] (Implementation 4)

[0084] Fig.12It is a plan view showing a configuration example of a video display system 1C according to Embodiment 4. The video display system 1C is different from the video display system 1B according to Embodiment 3 in the following points.

[0085] (1) A viewpoint sensor 90 is further provided.

[0086] (2) Instead of the image adjustment device 20B including the image splitter 260, an image adjustment device 20C including the image splitter 260A is provided.

[0087] The viewpoint sensor 90 detects the viewpoint position of the user 80 and sends the viewpoint position data to the image splitter 260A of the image adjustment device 20C. The image splitter 260A splits the image based on the viewpoint position data. The specific operation of splitting is described below.

[0088] Fig.13A Yes means Fig.12 FIG. 1 is a top view of the positional relationship between the display 52 and the screen 60 when the viewpoint of the user 80 in the image display system is shifted to the left. Fig.13A In the figure, the viewpoint position of user 80 is Fig.12 As a result, the shielding area 92 on the screen 60 that is hidden by the display 52 and cannot be seen is shifted to the right compared to when the viewpoint of the user 80 is at the predetermined position. Therefore, if the projector 51 and the display 52 display the same image as when the viewpoint of the user 80 is not moved, a part of the second display image 72 displayed on the screen 60 overlaps with the display 52 and cannot be seen, and the area where the second display image 72 is not projected can be seen on the screen 60.

[0089] Therefore, the image divider 260A of the image adjustment device 20C divides the integrated image content included in the integrated image signal from the media server 10 based on the viewpoint position of the user 80. The division is based on the positional relationship between the projector 51, the screen 60, the display 52 and the viewpoint of the user 80, and is divided into an area displayed on the display 52 and an area displayed on the current projection area 91 of the screen 60. Fig. 13B as well as Fig. 13C , a specific example of this segmentation is explained in two ways.

[0090] Fig. 13B Yes means Fig.12 A projection diagram showing an example of a splitting action in the image display system 1C. Fig. 13B In FIG. 5 , (a) indicates the image content input to the projector 51, and (b) indicates the image content input to the display 52. Fig. 13BIn the method, the shielding area 92 is shifted to the right, and accordingly, the image displayed on the projector 51 is also deformed to be shifted to the right. For example, the image adjustment device 20C can be further added Figure 7 The first image converter 251 of the second embodiment performs deformation so that the first image content displayed on the projector 51 is shifted to the right according to the correction value obtained by the correction value calculator 240 based on the detected viewpoint position of the user 80. The image content divided and corrected in this way is displayed via the projector 51 and the display 52, so that the user 80 sees the first image content from the viewpoint position of the user 80. Fig. 13B As shown in (c), a continuous image of the first display image 71 and the second display image 72 can be observed.

[0091] Fig. 13C Yes means Fig.12 A projection diagram of another operation example of the splitting operation in the image display system 1C. Fig. 13C In FIG. 5 , (a) represents the image content input to the projector 51, and (b) represents the image content input to the display 52. Fig. 13C In the method, the occluded area 92 is shifted to the right, and Fig. 13B The image displayed on the display 52 is shifted to the left in the same manner as the method of ... Fig. 13C As shown in (c), a continuous image of the first display image 71 and the second display image 72 can be observed.

[0092] In this way, the viewpoint position of the user 80 is detected by the viewpoint sensor 90, and the image adjustment device 20C transforms the image content or divides and integrates the image content based on the detected viewpoint position, thereby reducing the offset between the first and second display images 71 and 72 of the projector 51 and the display 52, and improving the continuity of the display image. In addition, in this embodiment, only the viewpoint moves to the left, but the same correction can be performed for the movement of the viewpoint position including up and down, left and right, front and back, and a combination thereof.

[0093] (Implementation method 5)

[0094] Fig.14A as well as Fig. 14B 1 and 2 are a top view and a side view respectively showing a configuration example of an image display system 1D according to Embodiment 5. Fig.12 The image display system 1C differs in the following aspects.

[0095] (1) The screen 60T is transparent and is closer to the user 80 than the display 52 .

[0096] The first display image 71 from the projector 51 is projected onto the projection area 91 of the transparent screen 60T. In addition, the second display image 72 displayed on the display 52 is observed by the user 80 through the transparent screen 60T.

[0097] Fig.15A Yes means Fig.14A FIG. 1 is a top view of the positional relationship between the display 52, the screen 60, and the user 80 when the viewpoint of the user 80 is shifted to the left in the image display system 1D. Fig. 15B Yes means Fig.14A A projection diagram showing an example of a splitting action in the image display system 1D. Fig. 15B In FIG. 5 , (a) shows the image content input to the projector 51 , and (b) shows the image content input to the display 52 .

[0098] exist Fig.14A In the image display system 1D, Fig.15A As shown in FIG. 1 , if the viewpoint is shifted to the left, the occlusion area 92 is also shifted to the left. Fig. 15B As shown, based on the viewpoint position of the user 80 detected by the viewpoint sensor 90, the first image content is deformed so that the image displayed on the display 52 is shifted to the left, and the shielding area 92 of the projector 51 is shifted to the left. Fig. 15B As shown in (c), a continuous image of the first display image 71 and the second display image 72 can be observed. In addition, even if the image displayed on the display 52 is deformed and the image displayed on the projector 51 is deformed to be offset to the left, the continuity of the two images can be improved. The details of these splitting operations can be referred to in Embodiment 4 and are therefore omitted.

[0099] (Other embodiments)

[0100] As described above, embodiments 1 to 5 are described as examples of the technology disclosed in the present disclosure. However, the technology in the present disclosure is not limited thereto, and can also be applied to embodiments that are appropriately changed, replaced, added, omitted, etc. In addition, the various structural elements described in the above embodiments can also be combined and set as new embodiments. Therefore, other embodiments are exemplified below.

[0101] In Embodiments 1 to 5, two cases of projectors 51 and displays 52 are described as multiple image display devices having different characteristics. However, the present disclosure is not limited to this, and the image display devices may be any number of two or more, and at least a part of them may have the same device characteristics. For example, the image display system may also include one display, one projector, and two spotlights.

[0102] In addition, the image display system of the present disclosure may also include one display and two projectors. Figure 2A , Fig. 10A In the image display system shown, instead of the projector 51 located in the center in the left-right direction, two projectors are arranged on the left and right, respectively, so that the area of ​​the first display image that becomes the shadow of the display 52 and cannot be projected on the screen 60 can be reduced. In this case, the first display image can be divided into two and displayed on the two projectors respectively.

[0103] In Embodiments 1 to 5, the image display system may include another display placed at the position of the screen 60 instead of the projector 51 and the screen 60. In this case, the first display image 71 may be displayed in the shielding area 92 as well.

[0104] In Embodiments 1 to 5, when the first display image 71 and the second display image 72 are displayed in a superimposed manner in the shielding region, the first display image 71 may be displayed in the shielding region.

[0105] In Embodiments 1 to 5, examples are shown in which the illuminance sensor 40 or the camera sensor 40A is arranged above the screen 60 . However, the position of the illuminance sensor 40 or the camera sensor 40A is not limited to the screen 60 , and may be built into the display 52 , for example.

[0106] Furthermore, in Embodiments 1 and 2, a method for improving the continuity of contrast and chromaticity between a plurality of image display devices having different characteristics is described. However, it is also possible to improve the continuity of brightness instead of contrast and chromaticity, or in addition thereto. In this case, the device characteristic data of the device characteristic database includes an external light brightness characteristic indicating the influence of the brightness of external light on the brightness of the displayed image.

[0107] As described above, the embodiments are described as technical examples in the present disclosure, and drawings and detailed descriptions are provided for this purpose.

[0108] Therefore, the structural elements described in the drawings and detailed descriptions include not only the structural elements necessary for solving the problem, but also the structural elements that are not necessary for solving the problem in order to illustrate the above-mentioned technology. Therefore, these non-essential structural elements should not be directly identified as essential because they are recorded in the drawings and detailed descriptions.

[0109] In addition, the above-mentioned embodiments are for illustrating the technology in the present disclosure, and therefore various changes, substitutions, additions, omissions, etc. can be made within the scope of the claims or equivalents.

[0110] Industrial Applicability

[0111] The present disclosure can be applied to an image display system including a plurality of image display devices having different device characteristics.

[0112] -Explanation of symbols-

[0113] 1. 1A, 1B, 1C, 1D Image display system

[0114] 10 Media Server

[0115] 20, 20A, 20B, 20C Image adjustment device

[0116] 211 1st input buffer

[0117] 212 Second input buffer

[0118] 221 No. 1 Image Information Extractor

[0119] 222 Second Image Information Extractor

[0120] 231 1st output buffer

[0121] 232 Second output buffer

[0122] 240, 240A, 240B Correction value calculator

[0123] 251, 251B No. 1 Image Converter

[0124] 252, 252B Second image converter

[0125] 260, 260A Image Splitter

[0126] 30, 30A Machine characteristics database memory

[0127] 40 Illuminance sensor

[0128] 40A Camera Sensor

[0129] 51 Projector

[0130] 52 Display

[0131] 60, 60T screen

[0132] 71 1st display image

[0133] 72 2nd display image

[0134] 80 users

[0135] 90 Viewpoint Sensor

[0136] 91 Projection Area

[0137] 92 Occlusion area.

Claims

1. An image display system that enables a plurality of image display devices having different machine characteristics to display images respectively, the image display system comprising: an external light detection device to detect external light; and The image adjustment device performs adjustment based on the device characteristics and the detected external light so that at least one of the contrast, chromaticity and brightness is continuous between the images respectively displayed on the plurality of image display devices. The plurality of image display devices include a first image display device and a second image display device, The first image display device displays an image with a lower contrast than the image displayed by the second image display device when the illumination of the external light is higher than a specified value, and displays an image with a higher contrast than the image displayed by the second image display device when the illumination of the external light is lower than the specified value. The image adjustment device sets a set value of contrast of the image display device that displays an image having a higher contrast than the other of the first image display device and the second image display device to a value lower than a predetermined value.

2. The image display system according to claim 1, wherein: The image adjustment device performs the adjustment by changing a setting value related to at least one of contrast, chromaticity, and brightness of the plurality of image display devices.

3. The image display system according to claim 1, wherein: The image adjustment device performs the adjustment by adjusting and changing at least one of the contrast, chromaticity, and brightness of the image displayed on the plurality of image display devices.

4. The image display system according to any one of claims 1 to 3, wherein: The plurality of image display devices include a projection type image display device and a light emitting type image display device.

5. The image display system according to any one of claims 1 to 3, wherein: The image adjustment device divides an input image and outputs the divided images to multiple image display devices respectively.

6. An image display system, wherein a plurality of image display devices respectively display images. The image display system comprises: an external light detection device to detect external light; and The image adjustment device divides a predetermined original image into a plurality of images and causes the plurality of image display devices to display the divided plurality of images respectively, so that when a user views the divided plurality of images from the user's viewpoint, the divided plurality of images constitute a mutually continuous original image, The plurality of image display devices include a first image display device and a second image display device, The first image display device displays an image with a lower contrast than the image displayed by the second image display device when the illumination of the external light is higher than a specified value, and displays an image with a higher contrast than the image displayed by the second image display device when the illumination of the external light is lower than the specified value. The image adjustment device sets a set value of contrast of the image display device that displays an image having a higher contrast than the other of the first image display device and the second image display device to a value lower than a predetermined value.

7. The image display system according to claim 6, wherein: The viewpoint position of the user is a predetermined viewpoint position.

8. The image display system according to claim 6 or 7, wherein: The image display system further includes a viewpoint sensor for detecting the viewpoint position of the user. The image adjustment device adjusts the image signals of the plurality of images based on the detected viewpoint position so that when the user views from the viewpoint position, the one original image in which the plurality of divided images are continuous with each other is displayed.

9. The image display system according to claim 6 or 7, wherein: The first image display device is a projection type image display device.

10. The image display system according to claim 9, wherein: The second image display device is a light-emitting image display device.

11. The image display system according to claim 6 or 7, wherein: One of the first image display device and the second image display device is located closer to the user than the other.

12. The image display system according to claim 6 or 7, wherein: The first image display device has transparency.

13. An image display method, wherein a plurality of image display devices having different machine characteristics respectively display images, the image display method comprising: The step of detecting external light; and Based on the machine characteristics and the detected external light, adjustment is performed so that at least one continuous step of contrast, chromaticity and brightness is achieved between the images displayed on the plurality of image display devices. The plurality of image display devices include a first image display device and a second image display device, The first image display device displays an image with a lower contrast than the image displayed by the second image display device when the illumination of the external light is higher than a specified value, and displays an image with a higher contrast than the image displayed by the second image display device when the illumination of the external light is lower than the specified value. A contrast setting value of the image display device that displays an image having a higher contrast than the other of the first image display device and the second image display device is set to a value lower than a predetermined value.

14. An image display method, causing a plurality of image display devices to display images respectively, the image display method comprising: Steps for detecting external light; The step of dividing a specified original image into a plurality of images; and In a case where the plurality of image display devices are caused to display the plurality of divided images respectively, the plurality of divided images are displayed so that when the user views the plurality of divided images from the user's viewpoint, the plurality of divided images constitute a mutually continuous original image, The plurality of image display devices include a first image display device and a second image display device, The first image display device displays an image with a lower contrast than the image displayed by the second image display device when the illumination of the external light is higher than a specified value, and displays an image with a higher contrast than the image displayed by the second image display device when the illumination of the external light is lower than the specified value. A contrast setting value of the image display device that displays an image having a higher contrast than the other of the first image display device and the second image display device is set to a value lower than a predetermined value.

Images