Method and apparatus for changing specified color in a color ima

Details Method and apparatus for changing specified color in a color ima Method and apparatus for changing specified color in a color ima

1996-03-20

1998-02-17

Burgess, Glenton B.

Television

Image signal processing circuitry specific to television

Selective image modification

348645, 348650, 348661, 345150, H04N 974, H04N 964

Patent

active

057196397

ABSTRACT:
A subject color and a non-subject color of color change operation are specified and then a first color vector representing the subject color and a second color vector representing the non-subject color are obtained. A substitute color for replacing a component of the subject color is further specified, and a color vector representing the substitute color is obtained. A third color vector independent of the first and second color vectors is further determined. A color of each pixel in an original color image is expressed by linear combination of the first through third color vectors, thereby obtaining first through third coefficients for the first through the third color vectors. If the first coefficient is positive, the first color vector is replaced by the substitute color vector. The pixel color after the color change operation is then determined by producing a composite vector using the first through the third coefficients.

REFERENCES:
patent: 4710800 (1987-12-01), Fearing et al.
patent: 4862251 (1989-08-01), Belmares-Sarabia et al.
patent: 4953008 (1990-08-01), Kaye
patent: 5487020 (1996-01-01), Long
patent: 5521615 (1996-05-01), Boyan

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