JP-7856864-B2 - Image display device, image display method, and image display program

JP7856864B2JP 7856864 B2JP7856864 B2JP 7856864B2JP-7856864-B2

Inventors

中村友哉
松崎裕樹

Assignees

ＥＩＺＯ株式会社

Dates

Publication Date: 20260511
Application Date: 20230906

Claims (7)

An image display device in which multiple display panels are arranged in an overlapping manner, and an image is displayed on each of the display panels, A first display panel positioned close to the observer, A second display panel is positioned further from the observer than the first display panel, An image generation unit generates first image data for displaying a first image in the image display area of the first display panel and second image data for displaying a second image in the image display area of the second display panel, based on input image data. Equipped with, The image generation unit generates the first image data and the second image data in such a way that the contrast of the image displayed is improved when the first image displayed on the first display panel and the second image displayed on the second display panel are superimposed. The image display area of the second display panel is larger than the image display area of the first display panel. The image display area of the second display panel includes an area that overlaps with the image display area of the first display panel when viewed from the normal direction of the plurality of display panels, a first display area located outside said area , and a second display area located outside said first display area. The image generation unit uses a boundary pixel region located near the boundary between the first and second display regions as a reference, and generates a second pixel group that includes a plurality of pixels arranged continuously in a second direction toward the outside of the second display region, using a first pixel group that includes a plurality of pixels arranged continuously in a first direction toward the inside of the first display region as a reference. The pattern of change in pixel values in the second direction for the second pixel group is the same as the pattern of change in pixel values in the first direction for the first pixel group. Image display device.
An image display device according to claim 1, The image generation unit generates an image which is an enlarged image based on the input image data, and generates an image for display in the first display area. Image display device.
An image display device according to claim 2, The image to be displayed in the first display area is an image obtained by enlarging the image based on the input image data with an accuracy of less than one pixel. Image display device.
An image display device according to any one of claims 1 to 3, The boundary pixel region consists of one or more pixels located along the first direction within the first display region, from the boundary between the first and second display regions. Image display device.
An image display device according to any one of claims 1 to 3, The boundary pixel region comprises one or more pixels located along the first direction within the first display region from the boundary between the first and second display regions, and one or more pixels located along the second direction within the second display region from the boundary between the first and second display regions. Image display device.
An image display method that displays an image on each of multiple display panels arranged in an overlapping manner, The process includes an image generation step of generating, based on input image data, first image data for displaying a first image in the image display area of a first display panel located closer to the observer, and second image data for displaying a second image in the image display area of a second display panel located further from the observer than the first display panel. In the image generation step, the first image data and the second image data are generated in such a way that the contrast of the displayed image is improved when the first image displayed on the first display panel and the second image displayed on the second display panel are superimposed. The image display area of the second display panel is larger than the image display area of the first display panel. The image display area of the second display panel includes an area that overlaps with the image display area of the first display panel when viewed from the normal direction of the plurality of display panels, a first display area located outside said area , and a second display area located outside said first display area. In the image generation step, a boundary pixel region located near the boundary between the first and second display regions is used as a reference, and a second pixel group is generated using a first pixel group that includes a plurality of pixels arranged continuously in a first direction toward the inside of the first display region, and a plurality of pixels arranged continuously in a second direction toward the outside of the second display region. The pattern of change in pixel values in the second direction for the second pixel group is the same as the pattern of change in pixel values in the first direction for the first pixel group. Image display method.
An image display program that causes a processor to execute the image display method described in claim 6.

Description

This invention relates to an image display device, an image display method, and an image display program. Conventionally, a technique has been proposed to improve the contrast of liquid crystal display devices by superimposing two display panels and displaying images on each panel based on the input video signal (see, for example, Patent Document 1). Specifically, for example, this technique aims to improve contrast by displaying a color image on the front (observer side) of two display panels arranged front to back, and a black and white image on the rear (backlight side) display panel. Japanese Patent Publication No. 2007-310161 This is a block diagram showing the functional configuration of an image display device 10 according to an embodiment of the present invention.This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e0.This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e0.This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e1.This figure shows examples of image display areas A0, A1, and A2 corresponding to the widths W0, W1, and W2, respectively, when the second display panel 32 is viewed from the normal direction of the stacked display panel.This diagram illustrates the concept of displaying a second image, which was initially generated with the size of image display area A0, by scaling it up to the combined size of image display area A0 and image display area A1.This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e0 when a second image generated to the size of image display area A0 is displayed, and image display areas A1 and A2 are displayed entirely in black (solid black).This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e0 when a second image, generated with the size of image display area A0, is enlarged to the size of the sum of image display area A0 and image display area A1, and image display area A2 is displayed as completely black (solid black).This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e1, when the observer is looking at the edge of the stacked display panel.This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e2, when the observer is looking at the edge of the stacked display panel.This diagram illustrates an example of a predetermined second extension process.This diagram illustrates an example of a predetermined second extension process.This diagram illustrates an example of a predetermined second extension process.Figure 14A is an example of an image showing the edge of the image display area A1 after a predetermined first expansion process has been performed by the first expansion unit 25. Figure 14B is an example of an image showing the edge of the image display area A1 and the image display area A2 after a predetermined second expansion process has been performed by the second expansion unit 26, using the image shown in Figure 14A. Figure 14C is an example of an image showing the edge of the image display area A1 and the image display area A2 after a process different from the predetermined second expansion process has been performed by the second expansion unit 26, using the image shown in Figure 14A.Figure 15A is an example of an image showing the edge of the image display area A1 after a predetermined first expansion process has been performed by the first expansion unit 25. Figure 15B is an example of an image showing the edge of the image display area A1 and the image display area A2 after a predetermined second expansion process has been performed by the second expansion unit 26, using the image shown in Figure 15A. Figure 15C is an example of an image showing the edge of the image display area A1 and the image display area A2 after a process different from the predetermined second expansion process has been performed by the second expansion unit 26, using the image shown in Figure 15A.This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e1, after a predetermined second expansion process has been performed by the second expansion unit 26 and the observer is looking at the edge of the stacked display panel.This is a schematic diagram showing the positional relationship between the display unit 30 of the image display device 10 and the observer's viewpoint e2, after a predetermined sec