Image analysis – Image compression or coding – Adaptive coding
Reexamination Certificate
2007-08-14
2007-08-14
Chen, Wenpeng (Department: 2624)
Image analysis
Image compression or coding
Adaptive coding
Reexamination Certificate
active
10230276
ABSTRACT:
From inputted multilevel image data it is generated, for each pixel, image area information constituted by an image area component indicating whether the pixel exists in a character•line drawing area or halftone area and an image area component indicating whether the pixel is chromatic or achromatic. The information is encoded by a lossless encoding unit on a block basis and stored, and an amount of code is monitored. When the amount of code exceeds a target amount, the lossless encoding unit performs encoding upon changing image area components, of subsequently input image area components, which coincide with a condition. The codes that have already been stored are temporarily decoded by a lossless code re-encoding unit, and the above image area components are changed. The resultant data is then re-encoded and stored.
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Ito Naoki
Kato Shin-ichi
Nakayama Tadayoshi
Ohta Ken-Ichi
Osawa Hidefumi
Chen Wenpeng
Fitzpatrick ,Cella, Harper & Scinto
Ge Yuzhen
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