JPS6370284A - Stereoscopic image display device - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for displaying a three-dimensional image on a display surface, and is suitable for use in, for example, a computer graphics system.

[Summary of the invention]

The present invention displays an image for the right eye and an image for the left eye on a display surface, and uses stereoscopic glasses to display the image for the right eye and the image for the left eye separately for the right eye and the left eye, respectively. As you can see,
When the observer changes the viewing position by detecting the position of the right eye and the position of the left eye and changing the image for the right eye and the image for the left eye according to the position information. In addition, by changing the stereoscopic image accordingly, it is possible to obtain a more natural stereoscopic window.

[Conventional technology]

As conventional stereoscopic image display devices, an anaglyph method using colored glasses and a shutter glasses method are known. The anaglyph method projects an image for the right eye in red, for example, on the display surface of a cathode ray tube, and also superimposes an image for the left eye, which has parallax with respect to the image for the right eye, on the image for the right eye in cyan, for example. The three-dimensional effect is obtained by viewing these two images through colored glasses, with the right eye colored cyan and the left eye colored red.

The shutter-equipped glasses method projects the right-eye image and the left-eye image on the display screen, for example, alternately for each field in a time-sharing manner, and synchronizes with the time-sharing period to display the images for the right eye and the left eye. A three-dimensional effect can be obtained by viewing through glasses with shutters that are alternately blocked. As a three-dimensional image display device using such a shutter-equipped glasses system, the present applicant and the present inventor have proposed, for example, the invention disclosed in Special Eye No. 1987-287309.

FIG. 3 shows a block configuration of a conventional stereoscopic image display device using a computer graphics system, which is used in both an anaglyph type and a shutter-equipped glasses type.

In FIG. 3, based on a drawing command from a host computer 1, an image generation section 2 creates right-eye and left-eye image data consisting of three primary color signals of R, G, and B, and writes them into the image memory, respectively. The image data read from the image memory is supplied to the monitor receiver 3 together with horizontal and vertical synchronizing signals H2. As a result, in the case of the anaglyph method, a right eye image and a left eye image of different colors are simultaneously displayed superimposed on the display surface 4 of the receiver 3, and in the case of the shutter glasses method, the right eye image and the left eye image are displayed simultaneously. The image for the left eye and the image for the left eye are displayed alternately with predetermined synchronization.

Therefore, by viewing the displayed image through the stereoscopic glasses 5, a stereoscopic image can be observed. If the glasses 5 are anaglyph type, the left and right lenses are colored in different colors, and if they are shutter glasses type, the left and right lenses are alternately shielded in synchronization with the image. things are used. In that case, the shutter switching signal S is sent to the glasses 5 from the image generation unit 2 as shown by the dotted line.

is added. Further, as the shutter means, a device is used in which liquid crystals or the like are used for the left and right lenses, and these are electrically controlled.

On the other hand, in recent years, three-dimensional digitizers that can accurately detect spatial coordinates on the x, y, and z axes have been developed, and have been put into practical use in some cases. This three-dimensional digitizer consists of a fixed magnetic dipole transmitting antenna called a source, a freely movable magnetic dipole antenna called a sensor, and an electronic circuit section.

Therefore, for example, by attaching the sensor to the user's head, when the user moves his or her head or body to change the position of the eyes, positional information can be obtained from the sensor. Regarding such three-dimensional digitizers, an article titled "Characteristics and Applications of Three-dimensional Digitizers" is published in the November 1984 issue of the magazine "Eizo Information J," page 27.

(Problems to be Solved by the Invention) In the conventional three-dimensional image display devices described above, the images displayed in both types are always fixed for the same image, and the viewer can move his or her head to change the viewing position. The displayed image remains the same even if you change the image.However, when a person actually looks at a stopped object, by changing the viewing position, the parts that were previously invisible become visible, and the parts that were visible become visible. Therefore, the stereoscopic effect obtained by conventional stereoscopic image display devices is unnatural and lacks a sense of reality.

[Means for solving problems]

In the present invention, means for detecting the position of the right eye and the position of the left eye, and means for changing the image for the right eye and the image for the left eye according to the position information are provided.

〔Example〕

FIG. 1 shows an embodiment of the present invention, and the same parts as in FIG. 3 are given the same reference numerals.

In the present invention, the three-dimensional digitizer 6 described above is used. This three-dimensional digitizer 6 is composed of the source 7, sensor 8, and control circuit 9 described above.

The source 7 is fixed at a suitable position, and the sensor 8 is attached to a part of the observer's body, for example, on the head, for example, via a hat.

That is, this sensor 8 is attached so that it moves when the observer moves his or her head or body to change the position of the eyes, that is, the point of view W (view point) at which the screen 4 is viewed.

Viewpoint position information obtained from sensor 8 ↓ Signal processing unit 9
will be processed. As a result, the right eye position information signal SR and the left eye position information signal SL are provided from the signal processing section 9 to the image generation section 2. The image generation unit 2 immediately generates the signals S, SL
In response to the instructions from the host computer 1, a right eye image and a left eye image are created and sent to the receiver 3.

Therefore, when viewing the image displayed on the display screen 4 through the glasses 5, it is possible to observe a stereoscopic image that changes according to the movement of the viewpoint.

FIG. 2 shows an example of a stereoscopic image that can be viewed according to the present invention.
I can see 0. This stereoscopic image 10 has viewpoints (1)-(2)
- When moving to each point shown in (3), A of this 3D image
Point, B point and 0 point are respectively At→At =A,+,B+
It appears to move like →B2→B and C8→Cz-Cz. Therefore, it is possible to create a natural three-dimensional effect that is extremely close to reality.

〔Effect of the invention〕

Since each image for the right eye and for the left eye changes according to the movement of the observer's viewpoint, a more realistic and natural stereoscopic effect than conventional stereoscopic images can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing an example of stereoscopic image display according to the present invention, and FIG. 3 is a block diagram of a conventional stereoscopic image display device. Note that in the symbols used in the drawings, 2--
...--1-------------Display surface 5...
−−1−～・−・・−・−Stereoscopic glasses 6・−・・
------------ It is a three-dimensional digitizer.

Claims (1)

[Claims] An image for the right eye and an image for the left eye are displayed on a display surface, and the image for the right eye and the image for the left eye are displayed as the right eye and the left eye, respectively, using stereoscopic glasses. A three-dimensional image display configured to display the right eye image and the left eye image separately, detect the right eye position and the left eye position, and change the right eye image and left eye image according to this position information. Device.