Method and apparatus for adjusting color saturation in electroni

Details Method and apparatus for adjusting color saturation in electroni Method and apparatus for adjusting color saturation in electroni

1987-08-14

1989-03-14

Groody, James J.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 40, 358 75, G03F 308, H04N 146, H04N 964

Patent

active

048129020

ABSTRACT:
A method for adjusting the color saturation during electronic image processing, in which a two-dimensional original image is electro-optically scanned along rows and columns for three primary colors and the resulting image signals are transformed into a luminance signal Y and two color-difference or chrominance signals C1, C2. A pre-selected adjustment of color saturation is used, in which, in accordance with a non-linear characteristic curve, small chrominance signals C1, C2 are more amplified than larger chrominance signals C1, C2 corresponding to a higher degree of saturation.

REFERENCES:
patent: 3835243 (1974-09-01), Nagaoka
patent: 4058828 (1977-11-01), Ladd
patent: 4661843 (1987-04-01), Sekizawa et al.
patent: 4706111 (1987-11-01), Abe et al.
patent: 4731662 (1988-03-01), Uidagawa et al.
patent: 4768082 (1988-08-01), Hiratsuka et al.

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