Method and device for reducing image by palette modification

Details Method and device for reducing image by palette modification Method and device for reducing image by palette modification

2005-08-30

2005-08-30

Patel, Kanjibhai (Department: 2625)

Image analysis

Color image processing

Color correction

C382S251000, C345S593000, C345S589000, C358S527000

Reexamination Certificate

active

06937759

ABSTRACT:
A method and device for reducing an input image by modifying the palette used in image compression. The reduction process involves mapping one or more colors of the original palette to a single color in a new palette. The image size of the reduced image is estimated from the entropy of the input image and that of the modified palette. A scaling factor, which can be computed from the image statistics inherent to the input image, is also used for adjusting the estimated image size of the reduced image.

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patent: 5341464 (1994-08-01), Friedman et al.
patent: 5463702 (1995-10-01), Trueblood
patent: 6674907 (2004-01-01), Shum et al.
patent: 0737059 (1995-02-01), None
patent: 1306067 (1999-11-01), None

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