JPH04344795A - Multi-eye type three-dimensional video display system - Google Patents

Abstract

PURPOSE:To observe a stereoscopic video image from many directions in the multi-eye 3-dimension video display device utilizing a lenticular lens. CONSTITUTION:One picture element on a picture element row (a) is displayed in the arrangement of R, G, B fluorescent bodies in a video display section such as a liquid crystal display device or the like placed at a rear focal face of an element lens 16 of a lenticular board, one picture element on a picture element row (b) is displayed in the arrangement of G, B, R fluorescent bodies and one picture element on a picture element row (c) is displayed in the arrangement of B, R, G fluorescent bodies and the arrangement above is repeated succeedingly. Thus, visual points at which a stereoscopic video image are more than twice of those of a conventional system.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a three-dimensional image generating apparatus using a multi-view lenticular method.

0002

[Prior Art] A multi-lens lenticular three-dimensional image generator uses a lens plate (lenticular plate) in which a large number of semicylindrical lenses are arranged horizontally, and each elementary lens generates images from a plurality of different viewpoints. This method then displays the image on the focal plane, and uses the action of the lens to distribute images with parallax to the left and right eyes, achieving stereoscopic vision.

FIG. 2 shows a structural diagram of the lenticular plate 11.
FIG. 3 shows a diagram of the principle of stereoscopic vision using this method. The positions of each elemental lens 16 of the lenticular plate 11 and each point of the object image to be displayed on the video display unit (for example, a liquid crystal display) 17 located at the focal plane of the lenticular plate 11 correspond to each other, and one elemental lens 1
On the back focal plane 6, images (pixels) taken from a plurality of directions about one point of the object to be displayed are displayed in order in the horizontal direction. Here, 14 indicates a left eye image display pixel, and 15 indicates a right eye image display pixel.

[0004] As a result, the position of the object image to be displayed is
It does not change even if you move the viewpoint, and images from different directions are sequentially observed. The conventional image display method within the elementary lens 16 is a method in which images from different viewpoints are arranged in order in the horizontal direction as one strip-shaped pixel row in the vertical direction.

FIG. 4 shows its configuration. In the figure, images from different viewpoints are displayed in order in pixel columns 1 to 4. Therefore, depending on the position of the viewpoint, the pixel array observed changes due to the action of the lens, resulting in a stereoscopic image viewed from different directions. That is, for example, at viewpoint D, pixel row 1 is observed, and at viewpoint C, pixel row 2 is observed.

[0006]

[Problem to be solved by the invention] In the conventional method described above,
Since there are limits to the width of one pixel of the image display device 17 and the pitch of the elementary lenses 16, there is a drawback that there are few directions in which a three-dimensional image can be observed. In Figure 4, the lens pitch is set to 1
mm, 1 of the video display section 17 (e.g. liquid crystal display)
If the pixel width is 0.25 mm, there are 4 pixels in the elementary lens 16.
Only pixels can be arranged, which reduces the number of images that can be displayed in four directions.

The present invention eliminates these drawbacks, arranges images from more directions within a limited lens pitch, and
The aim is to realize a three-dimensional image display method that can display images from more directions.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides an image observed from a viewpoint located between a viewpoint corresponding to one pixel and a viewpoint corresponding to the next pixel within an elementary lens. are displayed with a predetermined pitch shifted for each pixel row.

FIG. 1 shows its configuration. In the figure, in pixel row a, one pixel is displayed in an arrangement of R phosphor, G phosphor, B phosphor, and in pixel row b, G phosphor, B phosphor,
It is displayed in a row of R phosphors, and in pixel row c, B phosphors, R
The phosphor and G phosphor are displayed in sequence, and these steps are repeated thereafter. As a result, for example, pixel row 1 is observed from viewpoint J, pixel row 2 is observed from viewpoint I, and pixel row 3 is observed from viewpoint H.

0010

[Operation] As a result, the number of viewpoints from which stereoscopic images can be observed in Fig. 1 is 10, which is compared to Fig. 4 shown in the conventional method.
You can get more than double the perspective compared to Also,
This allows the image to change smoothly as the viewpoint moves, making it possible to create more natural 3D images.

[0011]

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 3. The target object is photographed from 10 directions at constant intervals with a maximum distance of 6.5 cm between both eyes, and each image is equally divided by the number of elementary lenses 16 of the lenticular plate 11.

When a target object is reproduced by a three-dimensional imaging device using the lenticular plate 11, the reproduced object is partially reproduced corresponding to the viewpoint observed by the elementary lens 16 of the lenticular plate 11. Since it is a collection of images, the position of the reproduced portion of the object and the position of the elementary lens 16 correspond.

[0013] Therefore, the image divided by the above method is collected into each corresponding elemental lens 16 in parts, and displayed as pixel rows corresponding to each viewpoint within the elemental lens 16.

Therefore, in FIG.
Within 6, images from 10 directions of the part corresponding to the elementary lens are arranged in order with a 1/3 pixel pitch shift for each pixel row, and are displayed in pixel columns 1 to 10, and the viewpoint By moving A to J, an image displayed in a pixel row corresponding to the viewing direction is observed.

In the entire lenticular plate 11, as shown in FIG.
The left eye and right eye images displayed by a collection of pixels 14 and 15 corresponding to pixels 3 and 12 will be observed, that is, a parallax will occur between the left and right eyes, allowing stereoscopic viewing.

Furthermore, in FIG. 1, the pixels displaying images from different viewpoints are shifted by only 1/3 pixel, as can be seen by comparing pixel row 1 and pixel row 2, for example. Therefore, when the viewpoint is moved, the amount of change in the jump in the image caused by the change in pixel rows is very small.

[0017]

[Effects of the Invention] According to the present invention, images observed from many viewpoints can be displayed within an elementary lens by devising control of each pixel without developing a liquid crystal display with a particularly small pixel width. This makes it possible to create three-dimensional images that are close to natural vision.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing a three-dimensional image display method using a lenticular plate according to the present invention.

FIG. 2 is a structural diagram of a lenticular plate.

FIG. 3 is a configuration diagram showing the stereoscopic vision principle of a three-dimensional imaging device using a lenticular plate.

FIG. 4 is a configuration diagram showing a three-dimensional image display method using a conventional lenticular plate.

[Explanation of symbols]

11 Lenticular plate element lens 12 Right eye viewpoint position 13 Left eye viewpoint position 14 Video display pixel for left eye 15 Right eye image display pixel 16 Lenticular plate 17 Video display section

Claims (1)

[Claims] Claim 1: In a three-dimensional image display device using a multi-view lenticular method, an image of a viewpoint corresponding to one pixel is displayed on an image display unit such as a liquid crystal display located at the back focal plane of each element of the lenticular plate. A multi-view three-dimensional image display system characterized in that an image of a viewpoint located between the image and the image corresponding to an adjacent pixel is displayed while being shifted by a predetermined pitch for each pixel row.