Image processing apparatus

Details Image processing apparatus Image processing apparatus

1992-04-22

1993-02-23

Brinich, Stephen

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358433, G06K 900

Patent

active

051895307

ABSTRACT:
The invention is intended to improve image quality in a process of image coding. In an apparatus for quantizing conversion data resulted from converting image information into frequency regions and then coding the quantized data, a coefficient to be multiplied by a chrominance quantizing matrix is set depending on a coefficient to be multiplied by a luminance quantizing matrix for an improvement in color reproducibility.

REFERENCES:
patent: 4797945 (1989-01-01), Suzuki et al.
patent: 4887151 (1989-12-01), Wataya
patent: 4974071 (1990-11-01), Maeda
patent: 5023919 (1991-06-01), Wataya
patent: 5060285 (1991-10-01), Dixit et al.

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