Image analysis – Image compression or coding – Lossless compression
Patent
1997-07-03
1998-11-03
Coles, Edward L.
Image analysis
Image compression or coding
Lossless compression
382248, 382251, 358432, H04N 1415
Patent
active
058321284
ABSTRACT:
Picture signal encoding and decoding apparatus capable of realizing a satisfactory operation in encoding and decoding a picture image at a stable speed without being restricted to the upper limits of input and output speeds in a transfer path or a storage device for encoded data. In a picture signal encoding apparatus comprising a block divider, an orthogonal transformer, a quantizer and a variable length encoder, there are further included a band divider for dividing quantized coefficients into a plurality of mutually prime subsets, a plurality of variable length encoders for encoding the quantized coefficients of each subset to obtain encoded data of each subset, and a plurality of memories or transferrers for storing or transferring the encoded data of each subset individually.
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Coles Edward L.
Fuji 'Xerox Co., Ltd.
Lee Cheukfan
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