Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1991-05-17
1992-10-20
Kostak, Victor R.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358 13, 358136, H04N 713
Patent
active
051574888
ABSTRACT:
A system and method for masking adaptive quantization during compressed image data transmission by defining a scaling factor for the quantization tables of the multiple image components, wherein the scaling factor signals changes in quantization for successive blocks of the image data. The scaling factor is transmitted as a further component together with the image components to thereby signal adaptive quantization of the image data.
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"The JPEG Technical Specification" Rev. 8, Aug. 14, 1990, Computer and Business Equipment Manufacturers Association, 311 1st Street, N.W., Suite 500, Washington, D.C. 20001-2178.
International Business Machines - Corporation
Kostak Victor R.
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