Recognition of image colors using arbitrary shapes in color spac

Details Recognition of image colors using arbitrary shapes in color spac Recognition of image colors using arbitrary shapes in color spac

1989-06-28

1992-02-11

Chin, Tommy P.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 27, 358 80, H04N 968

Patent

active

050879650

ABSTRACT:
In a color identification system in which a video signal is rendered into three mutually distinct color element signals, a set of defined colors is established. The disclosed invention defines each color in the set by three compound color components, each compound color component being defined by pairwise combination of color element magnitude ranges. As the color element signals change at the pixel rate of the video signal, the invention combines them into three compound signals, each compound signal resulting from combination of a respective two of the color signals. Each of these pairwise combinations is compared with compound color component sets to determine whether the current pixel embodies a color in the set of defined colors.

REFERENCES:
patent: 4430748 (1984-02-01), Tuhro et al.
patent: 4797738 (1989-01-01), Kashi et al.
patent: 4954881 (1990-09-01), Kaye
patent: 4991223 (1991-02-01), Bradley

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