JPH0389387A - Synthesizing method for plural screens - Google Patents

Abstract

PURPOSE:To generate a large screen in which no joint is made aware in a display by projecting an image onto the display from plural projectors so that each matching surface becomes oblique against the gravity direction. CONSTITUTION:An image from a scene input part 101 for inputting various scenes is divided uniformly into four images by using a mirror in an image dividing part 102. This mirror is notched in the oblique direction against the gravity direction. Subsequently in the case the number of divisions is not proper, the image is further divided into four images in the same way in the image dividing part 102. The respective divided images all have an outline in the oblique direction against the gravity direction in such a way. In image division display part 103, each image is projected to a display part 104 through each projector. In such a way, a large screen in which no joint is made aware can be reproduced.

Description

[Detailed Description of the Invention] [Industrial Application Field] What does the present invention cover? The present invention relates to a multiple screen compositing method that matches Jl number of screens.

[Conventional technology]

In movie theaters, leisure facilities, etc., images are reproduced on large screen displays in order to bring a sense of realism to large audiences.A typical display method is to project images from a projector onto a large screen. There is a method. Also, as a method to obtain a three-dimensional effect.

There is a method that uses blue-eye parallax separation glasses, which spatially separates and reproduces the reproduction objects for the left and right eyes on a large screen.

In any case, since projection is performed from one projector onto a large screen, the resolution of the 1M image is significantly reduced. In order to further increase the resolution, it is desired to improve the resolution of images by using a method of reproducing the body using a plurality of projectors.

FIGS. 5 to 8 are diagrams explaining conventional systems, respectively. The illustration in FIG. 5 shows a system in which a single large screen 2 is displayed on a screen 1 by a projector 3 in front of the IE monitor 4. Although this method is the simplest large-screen display, it has the disadvantage that a rather coarse image is provided to the viewer because it uses a single projector.

The illustration in FIG. 6 shows a display method using a plurality of displays 5 placed in front of the observer 7. In this method, identical square-shaped displays are arranged so that the edges of the displays are parallel or perpendicular to the direction of gravity. However, clearly there is a boundary 6 between the displays.

There is a drawback that makes the observer feel uncomfortable.

In the illustration in FIG. 7, in front of the observer 12.

This represents a method of displaying a single image on a plurality of screens 8 using a projector 11. This method separates the same image information into multiple pieces.

More detailed image information 10 is provided to the viewer.

] However, since the joining surfaces 9 of adjacent screens are parallel and perpendicular to the direction of gravity, Onishi The drawback is that the sense of realism is lost due to the surface.

In the illustration in FIG. 8, i! This represents a method of performing the bottoming of multiple screens using li image processing. The input landscape 12' is inputted by a plurality of cameras 13 arranged in a matrix,
Level processing 14 is performed on the video signal between each camera.
Here, we will correct the variations in the luminance signal 9 color signal from each camera 13, and perform geometric correction 15 to reduce the number of seams when combining multiple screens.
I do.

When setting up a plurality of cameras 13, each camera is oriented in a different direction, so applying a Ws-plane base may result in discontinuous images. Therefore.

Correction between each image is essential depending on the orientation of the camera 13. In other words, since there is a limit to the accuracy of mechanical camera positioning, processing dependent on image processing such as affine transformation is required. Finally, nine combined images input from each camera are displayed as a reproduction display 16. however,
However, the reproduced image still has the disadvantage of being a discontinuous landscape image containing seams.

[Problem to be solved by the invention]

In the conventional display method, when joining multiple west faces,
To the observer, because the joining direction is parallel or perpendicular to the direction of gravity.

There is a problem in that the joint surface produces an undesirable effect that is perceived to be relatively strong, impairing the sense of realism.

The present invention aims to solve the llgIB points of the above-mentioned conventional methods and reduce the perception of joint surfaces between multiple screens based on the principles of visual psychology.

[Means to solve the problem]

In order to achieve the above object, the main feature of the present invention is that a plurality of projectors project images onto a display such that their alignment surfaces are oblique to the direction of gravity.

[For production]

Compared to the prior art, since the display is performed such that the joining direction of the nine divided screens and the screen is oblique to the direction of gravity, the joining line between the iI surface and the screen is difficult to perceive.

〔Example〕

In the present invention, image information is taken in from an input section from a camera and optically divided by an image division section through a plurality of optical paths, and is transmitted to an a-image division display section, and then sent to a display section by a projection type projector. Project. At this time, the individual images separated by one are processed in the one-image dividing section and the image dividing display section so that they are oriented diagonally with respect to the direction of gravity. When multiple screens are projected onto a screen from multiple projectors, the direction of the joint surfaces between the screens is projected so that the joint surfaces are diagonal to the direction of gravity, so that the perception of the joint surfaces becomes dull. This creates a large screen with no visible seams on the display.

FIG. 1 shows a configuration diagram of an embodiment of a display system for implementing the present invention. Images from a landscape input section 101 for inputting various landscapes are divided into four images using a mirror in a nine-image dividing section 102. It is divided as follows. This mirror has a cut that is diagonal to the direction of gravity. Subsequently, if the number of divisions is not appropriate, the image division unit 102 further divides each of the zero-divided images into four images in the same manner.

All 0s have contours diagonal to the direction of gravity.
In the image division display section 103, each individual image is projected onto the display section 104 via an individual projector.

FIG. 2(A) shows the processing mode of the image dividing section.

FIG. 2(B) shows a cross-sectional conceptual diagram of the image dividing section.

In FIG. 2(A), an image 20 captured from a camera input section is divided into four by a mirror 21 in the first stage.

At this time, since the mirror and the image are made to have the same size, the image divided into four parts has --like brightness and distortion. Each of the four divided images is reflected by a reflecting mirror 22.
23, the image is further divided into four by the first stage image dividing mirror 24, 25.26° 27. Figure 2 (B)
, the image body 20 captured from the camera input section is
It is divided into four equal parts by mirror 21, each passes through mirrors 22 and 23, and then again through mirrors 24 and 25.

It is divided into four equal parts, passes through 1128, 29, 30.31, and is displayed on one large display 50 by projectors 32, 33, 34, and 35.

FIG. 3 is a diagram showing the process in which the captured image is divided into equal parts. The captured image 20 is.

The image 20-1 is equally divided into four by the first-stage image dividing mirror 21. For example, 1 for image division in the second stage
24, each area of the nine images 20-1 is divided into four equal parts to form an image 20-2.

The original image 20 is equally divided into 16 regions. Each area of the W image 20-2 is divided into 4 areas by the third-stage image dividing mirror.
The original image 20 is divided into 64 regions.

FIG. 4 is a diagram showing a processing example corresponding to FIG. 1, in which an image inputted by the scenery input section 101 and divided by the 9-image division section 102 is transmitted to the image division display section 103.

An image bottomed by a joining line oblique to the direction of gravity is projected on the display unit 104 as shown.

When a single scene is divided and displayed on multiple screens for the purpose of obtaining high-definition images on a large screen.

Using human visual characteristics, we conducted a subjective evaluation experiment with the matching direction diagonal to the direction of gravity in order to reduce the perception of matching lines on each other's screens.

As a result, by slanting the outline of the large screen, the perception of things outside the scene is further reduced.

When the distance from the screen was kept constant, the alignment line gradually became less perceptible to the observer over time.

[Effects of the Invention] As explained above, according to the present invention, when joining a plurality of divided screens on a display, 1
By projecting the joining line diagonally in the direction of gravity, it is possible to reproduce a large screen with no noticeable seams.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of an embodiment of the present invention, and FIG. 2 (A) is processing 1 of the image dividing section! Figure 2 (B) is a cross-sectional conceptual diagram of the image dividing section, Figure 3 is a diagram showing the process of dividing the captured image into equal parts, and Figure 4 is an example of processing corresponding to Figure 1. The figures shown in FIGS. 5 to 8 are diagrams for explaining the conventional systems, respectively. 101 is a scenery input section, 102 is an image division section, 103
104 is an image division display section, 104 is a display section, 20 is an input image, 22.23.2B, 29.30.31 is a mirror that reflects the image to the next image division section, 21, 24° 25.26.
27 represents a mirror that divides the image so that the joining direction is oblique to the direction of gravity.

Claims (1)

[Claims] In enlarging and displaying a single input image,
In an image display system in which the single image is divided into multiple screens, enlarged, and then combined, the matching direction of the matching surfaces of the multiple screens to be combined is set diagonally with respect to the direction of gravity. A multi-screen compositing method characterized by compositing screens that have been created.