Image analysis – Histogram processing – For setting a threshold
Patent
1991-08-09
1994-06-07
Boudreau, Leo H.
Image analysis
Histogram processing
For setting a threshold
382 49, 358432, G06K 936, G06K 946, G06K 954
Patent
active
053197240
ABSTRACT:
Transforms such as the DCT are useful for image compression. One close relative of the DCT is preferred for its arithmetic simplicity. A method and apparatus is described whereby the image compression is done with no multiplications while still compatible with a JPEG (Joint Photographic Experts Group) Transform. Other enhancements are made to improve image quality.
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Allen James D.
Blonstein Stephen M.
Boliek Martin P.
Boudreau Leo H.
Cammarata Michael
Ricoh & Company, Ltd.
Ricoh Corporation
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