Method and apparatus for compressing and decompressing color vid

Details Method and apparatus for compressing and decompressing color vid Method and apparatus for compressing and decompressing color vid

1990-03-16

1991-09-03

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358 13, 358 78, 358133, G06K 936

Patent

active

050461192

ABSTRACT:
An adaptive compression/decompression method for color video data with an anti-aliasing mode. 4.times.4 blocks of pixel data are examined to determine which one of four compression techniques should be used on each block. User settable thresholds can be used to shift the types of compression used. Highest compression is obtained when more data is stored in run length blocks of single colors and lowest compression when more data is stored as two colors with a 32-bit bitmap for each 4.times.4 block. One type of compression used provides anti-aliasing.

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