Graded color acquisition method and apparatus in image processin

Details Graded color acquisition method and apparatus in image processin Graded color acquisition method and apparatus in image processin

1995-08-09

1999-03-09

Kemper, Melanie

Facsimile and static presentation processing

Natural color facsimile

Color correction

345199, G03F 308

Patent

active

058808604

ABSTRACT:
An acquisition color specifying section works within a computer system to process graded color. The number of individual gradation levels which may be acquired in color gradation or density gradation is limited by the computer system. To address this limitation, the acquisition color specifying section specifies graded colors to be acquired without modification or substitution in a case where the number of available colors of the color table of a system is equal to or larger than the number of graded colors to be originally acquired. In a case where the number of available colors of the color table is less than the number of graded colors to be originally acquired, a blank is present in the color table. In this case, the acquisition color specifying section specifies graded colors of a number corresponding to the blank of the color table such that the graded colors will be uniformly distributed in a gradation range to be acquired. An acquisition process controlling section acquires specified graded colors and registers the graded colors into a color table of a color table storing section. An allocation processing section then allocates acquired graded colors which are most approximately equal to the originally requested graded colors when the number of graded colors registered in the color table is less than a required number of representation colors.

REFERENCES:
patent: 4901258 (1990-02-01), Akiyama
patent: 5479272 (1995-12-01), Saito
patent: 5537579 (1996-07-01), Hiroyuki
patent: 5592312 (1997-01-01), Noguchi
patent: 5610732 (1997-03-01), Komatsu
patent: 5737101 (1998-04-01), Ito
patent: 5745103 (1998-04-01), Smith

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