Image processing method and device for the same

Details Image processing method and device for the same Image processing method and device for the same

1992-04-14

1995-11-07

Ip, Paul

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358432, 358458, 348384, H04N 141

Patent

active

054651646

ABSTRACT:
Disclosed is an image processing device which comprises a conversion means for converting an image data to a space frequency component, a quantization means for quantizing the space frequency component converted by the conversion means, and a control means for controlling the quantization means so that a quantization error produced when the converted space frequency component is quantized by the quantization means is diffused to nearby space frequency components.

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Leger et al., "Still Picture Compression Algorithms Evaluated for International Standardisation", IEEE Global Telecommunications Conference vol. 2, pp. 1028-1032 (Nov. 1988).
Groll et al., "Using the 8 bit CCIR Recommendation 601 Digital Interface", IBC Int'l, Broad Jayant et al., Digital Coding of Waveforms, Prentice Hall, pp. 351-371 (1984).

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