Computer graphics processing and selective visual display system – Plural physical display element control system – Display elements arranged in matrix
Patent
1996-11-25
1999-05-25
Lao, Lun-Yi
Computer graphics processing and selective visual display system
Plural physical display element control system
Display elements arranged in matrix
345154, 348586, 348650, G09G 504
Patent
active
059073152
ABSTRACT:
The invention utilizes the fact that anyone with normal color vision has the ability look at a scene on a video display and recognize a black area if one is present; a white area if one is present, and face or flesh areas if a person is present. It is also easy to recognize blond hair, subjects that are opaque, subjects that are semi-transparent, and subjects that are bright green. The aforesaid abilities to recognize luminance and color characteristics of elements within a video scene are used in conjunction with the invention to produce ideal composite images by utilizing of a set of equations that incorporate a knowledge of color science, of video and existing compositing techniques. These equations are used to make adjustment decisions to produce the best possible composite image. The equations are used to compute certain constant values utilized in the existing compositing techniques. The equations are also used to calculate exact values of B, G, R and gamma for balancing blacks, whites, and flesh tones as well as foreground and background video levels.
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Dadourian Arpag
Sauve George
Vlahos Paul
Lao Lun-Yi
Ultimatte Corporation
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