Facsimile and static presentation processing – Static presentation processing – Attribute control
Patent
1980-06-30
1982-03-09
Murray, Richard
Facsimile and static presentation processing
Static presentation processing
Attribute control
358 21R, 358 80, H04N 146
Patent
active
043192688
ABSTRACT:
A sharpness emphasizing method of a reproduction picture for use in a picture reproducing machine such as a color scanner or a color facsimile, wherein an original picture is scanned to pick up a picture signal which is separated into color separation picture element signals of primary colors, and wherein a reproduction picture is reproduced by using the color separation picture element signal, in which a main picture element signal whose sharpness is to be emphasized, and supplemental picture element signals positioned around the main picture element signal are picked up, in which the supplemental picture element signals picked up are weighted with factors in such a manner that the supplemental picture element signals positioned in the same distance away from the main picture element signal may be weighted with the same factor, and the supplemental picture element signals weighted are averaged to obtain a mean value signal, and in which the main picture element signal is emphasized according to the mean value signal.
REFERENCES:
patent: 2962548 (1960-11-01), Taudt
patent: 3153698 (1964-10-01), Hall et al.
patent: 3194882 (1965-07-01), Hall
patent: 3194883 (1965-07-01), Ross
patent: 3194884 (1965-07-01), Ross et al.
patent: 4058828 (1977-11-01), Ladd
Dainippon Screen Seizo Kabushiki Kaisha
Murray Richard
Painter Michael A.
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