Color selecting method

Details Color selecting method Color selecting method

1991-12-11

1997-06-24

Wu, Xiao

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

345155, G09G 506

Patent

active

056421370

ABSTRACT:
A method for color selection is proposed in which interchangeability between color palettes of a predetermined number of colors for color expressions of a color image and extended color palettes with an increased number of colors is maintained. A color space is divided into n regions D1 . . . Dn corresponding to the number of colors n of pre-extension color palettes for corresponding to n palette number groups of the extended color palettes. Each of these regions D1 . . . Dn is subdivided into m sub-regions D1(1) to D1(m), . . . , Dn(1) to Dn(m) corresponding to an extended color number mn for association with mn palette numbers of the extended color palettes.

REFERENCES:
patent: 4689669 (1987-08-01), Hoshino et al.
patent: 4697176 (1987-09-01), Kawakami
patent: 4772881 (1988-09-01), Hannah
patent: 4818879 (1989-04-01), Manson
patent: 4857901 (1989-08-01), Lathrop
patent: 4941038 (1990-07-01), Walowit
patent: 5089899 (1992-02-01), Nomura et al.

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