Image analysis – Image compression or coding – Lossless compression
Patent
1996-10-03
1999-09-21
Coles, Edward L.
Image analysis
Image compression or coding
Lossless compression
382272, 382282, 382305, 348399, 348405, 348420, 358433, G06T 900
Patent
active
059564300
ABSTRACT:
An image information coding apparatus includes a block generator for dividing image information into pixel blocks, each of which consists of a predetermined number of pixels. A block selector selects a pixel block in a position different from that of a pixel block selected in a preceding block line in a main scanning direction from the pixel blocks generated by the block generator. A parameter setting device sets a coding parameter to a predetermined value. A first variable-length coding device conducts variable-length coding of the pixel block selected by the block selector using the coding parameter. A code amount controller changes a value of the coding parameter so that the code amount of the pixel block selected by the block selector and coded by the first variable-length coding device is not more than a predetermined code amount, and a second variable-length coding device conducts variable-length coding of all of the pixel blocks using a coding parameter changed by the code amount controller.
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Kamizawa Koh
Kimura Shun-ichi
Koshi Yutaka
Kunitake Setsu
Yokose Taro
Coles Edward L.
Fuji 'Xerox Co., Ltd.
Rosenblum David
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