Color image display with a limited palette size

Details Color image display with a limited palette size Color image display with a limited palette size

1989-11-03

1991-09-10

Wieder, Kenneth A.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 80, B04N 146

Patent

active

050478427

ABSTRACT:
A method for creating from a digitized color image, a tree structured partitioning of all pixels in the image into M disjoint sets, with the pixels in each set having similar color values, the method comprising the steps of: separating and assigning all pixels in the image into disjoint sets so as to minimize the difference between the respective pixel color values in each set; selecting one of the sets which has a greatest variation of color values of assigned pixels, and separating and assigning all pixels in the selected set into new, disjoint sets, with the pixels assigned so as to minimize the differences between their respective color values; continuing the selecting, separating and assigning steps for sets until a total of M sets have been derived; and then assigning to all pixels in each set, a mean color value calculated from all pixel colors in the set.

REFERENCES:
patent: 4244654 (1981-01-01), Asai et al.
patent: 4414635 (1983-01-01), Gast et al.
patent: 4654720 (1987-03-01), Tozawa
patent: 4689669 (1987-08-01), Hoshino et al.
patent: 4907075 (1990-03-01), Braudaway

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