Image analysis – Image compression or coding – Quantization
Patent
1997-01-16
1999-04-27
Shalwala, Bipin
Image analysis
Image compression or coding
Quantization
382171, 382195, 358457, 358429, G06K 936, G06K 938, G06K 946, G06K 966
Patent
active
058987967
ABSTRACT:
An input signal represented by values of many levels obtained by reading out an original image is applied to a pixel characteristic extracting unit for extraction of a characteristic of a pixel. Based on the extracted pixel characteristic, a gain calculating process is effected based on the pixel characteristic in a first gain calculating unit. An attribute flag showing an image characteristic extracted by the pixel characteristic extracting unit is added to the gain calculated error data which is stored. An area characteristic is determined in an area characteristic extracting unit based on the flag. Based on the determination result, error correction with high precision is carried out in a second gain calculating unit.
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Minolta Co. , Ltd.
Shalwala Bipin
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