Color television system for processing signals from a television

Details Color television system for processing signals from a television Color television system for processing signals from a television

1989-03-06

1991-02-19

Kostak, Victor R.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358105, 358 88, H04N 1500

Patent

active

049948989

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND OF THE INVENTION

1. Field of the Invention
This invention relates to the recording and reproduction of images. More particularly, the invention relates to the recording and reproduction of stereoscopic television or video images.
2. Description of Related Art
Stereoscopic or "3D" photographs and moving films have been known for many years. The photographs or films have been made by simultaneously photographing an object from two different aspects, through two lens systems separated horizontally or vertically from one another or by dividing a single lens system using mirrors, prisms etc. In the case of moving films, the usual technique has been to use different colour filters, for example red and green, with the two lens systems, or split lens system so that red and green images are formed simultaneously on each frame or alternate frames of the film. When the film is subsequently shown in the cinema or through a television transmission system, each member of the audience wears a pair of spectacles with complementarily coloured lenses, so that the two images on the screen are presented separately to the two eyes of the viewer, producing the illusion of a stereoscopic or three dimensional image. Disadvantageous of the known techniques are that they require specially built or specially adapted cameras which, because of the need for split or separate lens systems, are bulky and expensive, and that they produce a degraded or double image when the result is viewed without the appropriate spectacles.
Stereoscopic vision relies on the fact that each eye sees a different aspect of the same object. This stems not only from the different positions occupied by the two eyes, but from the fact that there is usually movement in the scene being viewed, or movement of the eyes themselves. A person's head is for a large part of the time in constant movement, as are the eyes within the head, as they constantly scan the scene they are looking at. This causes continuous change in the aspects of the scene being viewed by each eye, which is important in the perception by the brain of the "dimensionality" of objects in the scene. Any movement in the scene, even of a single moving object, will increase the stereoscopic effect, even if the eyes are kept stationary.
The present invention makes use of this effect in producing stereoscopic images in a television or video system.
Television or video systems use an electronic camera to generate, three electrical signals corresponding to the red, green and blue light from the scene being recorded. These signals are eventually reproduced in the television receiver to give rise to red, blue and green images which are in effect superimposed on the television screen to produce a full colour image. The images are produced in a sequence of "fields"; in a typical television system a field is produced by scanning approximately half the lines of the television picture, the remaining lines being scanned in the next field in a manner known as "interlacing", the two successive fields forming a complete frame of the picture.
There have been proposed systems for producing stereoscopic television or video images, in which the superimposed red, green and blue images on the television screen in each field correspond to images seen by the camera at times separated by predetermined intervals. Examples of such systems are shown in European patent Nos. 0 022 820B and 0 089 611B.
In these systems, the single colour images appearing on the television screen correspond to images of the scene taken at different times. Stereoscopic information about objects in the scene is effectively encoded in the disparity between the single colour images superimposed on the screen. However, this information will be different depending on the direction of movement of an object across the scene. For example, suppose an object is moving from left to right across the scene, and that two successive images are formed in red and cyan light and subsequently superimposed on the screen (a two colour system being considered f

REFERENCES:
patent: 4558359 (1985-12-01), Kuperman et al.
patent: 4704627 (1987-11-01), Yuyama et al.
patent: 4743985 (1988-05-01), Yamada et al.

Affiliated with

Also associated with

Rating

Color television system for processing signals from a television does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color television system for processing signals from a television, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color television system for processing signals from a television will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1148313