Edge processing system for color image processing system

Details Edge processing system for color image processing system Edge processing system for color image processing system

1989-10-19

1991-07-16

Coles, Sr., Edward L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358448, H04N 140

Patent

active

050329030

ABSTRACT:
An edge processing system for use in a color image processing device for reproducing images having a plurality of colors through its execution of repeated developing processes for the individual recording signals of the developed colors, comprises a low-pass digital filter for eliminating mesh dot components of the recording signals to smooth halftone images; a high-pass digital filter for detecting an edge part composed of high frequency components of the recording signals; a hue detector for detecting the hue of the recording signals to produce hue signals; an edge emphasizing signal generator for generating edge emphasizing signals according to the hue signals of the hue detecting means and the output signals of the high-pass digital filter; and a synthesizer for modulating and synthesizing the edge emphasizing signals and the output signals of the low-pass digital filter.

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patent: 4847654 (1989-07-01), Honma et al.
patent: 4887150 (1989-12-01), Chiba et al.
patent: 4901258 (1990-02-01), Akiyama

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