Method and apparatus for fast construction of color cubes

Details Method and apparatus for fast construction of color cubes Method and apparatus for fast construction of color cubes

2006-04-11

2006-04-11

Razavi, Michael (Department: 2672)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

Reexamination Certificate

active

07027068

ABSTRACT:
A method, apparatus, and article of manufacture defines one or more entries in a color cube. A first color cube is obtained that has color cube entries that each define a color region. In a first technique, a second smaller color cube is obtained and a list of two or more color indices are mapped to one or more of the second color cube entries. Each entry of the first color cube is compared to the list of colors from a corresponding second color cube entry. The first color cube entry is then mapped to the index representing the most similar color. In a second technique, each color index is mapped to first color cube entries based on a distance of the color region of the first color cube entry to the location, in the first color cube, of the color represented by the index.

REFERENCES:
patent: 5343311 (1994-08-01), Morag et al.
patent: 5568596 (1996-10-01), Cawley
patent: 5627950 (1997-05-01), Stokes
patent: 6011540 (2000-01-01), Berlin et al.
Techencyclopedia, “color palette,” http://www.techweb.com/encyclopedia ©1981-2001, pp. 2.
Techencyclopedia, “RGB,” http://www.techweb.com/encyclopedia © 1981-2001, pp. 1.
Techencyclopedia, “colors,” http://www.techweb.com/encyclopedia © 1981-2001, pp. 1.

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