Image analysis – Image compression or coding – Quantization
Patent
1997-12-23
1999-10-12
Tran, Phuoc
Image analysis
Image compression or coding
Quantization
G06K 936, G06K 938
Patent
active
059664711
ABSTRACT:
The present invention relates to the field of vector quantization of transmitted imagery. In particular, the invention is a method for automatically generating a codebook for use in the transmitter and receiver components of an amplitude-adaptive normalized differential vector quantization system based upon a specified signal-to-noise ratio goal. In accordance with this method, the specified signal-to-noise ratio goal automatically derives the amplitude thresholds and other required data to determine the tradeoff between image quality and data compression for the transmitted imagery.
REFERENCES:
patent: 4862261 (1989-08-01), Tanaka
patent: 4933761 (1990-06-01), Murakami et al.
patent: 5021971 (1991-06-01), Lindsay
Bodson Charles D.
Fisher Sydney T.
Kirk Flayo O.
Tran Phuoc
United States of America
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