Image analysis – Image compression or coding – Quantization
Patent
1997-08-25
1998-10-13
Mancuso, Joseph
Image analysis
Image compression or coding
Quantization
358433, H04N 141
Patent
active
058224637
ABSTRACT:
An image transforming section subjects image data to compression processing. A quantizing section quantizes the transformed data using a quantization width. A variable-length coding section subjects the quantized data to variable-length coding. A code-amount computing section determines a total code amount by accumulating partial code amounts. A control section performs control based on the code amount. An estimating method selecting section adaptively selects a quantization width estimating method. A coded result storage section stores data of a code amount corresponding to the quantization width. First and second quantization width estimating sections have different quantization width estimating methods.
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patent: 5289289 (1994-02-01), Nagasaki
patent: 5412484 (1995-05-01), Yoshikawa
Andoh Akihiro
Kamizawa Koh
Kimura Shun-ichi
Koshi Yutaka
Kunitake Setsu
Fuji 'Xerox Co., Ltd.
Mancuso Joseph
Prikockis Larry J.
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