Apparatus and method for enhancing color saturation in halftoned

Details Apparatus and method for enhancing color saturation in halftoned Apparatus and method for enhancing color saturation in halftoned

1994-10-11

1996-05-14

Rogers, Scott A.

Facsimile and static presentation processing

Natural color facsimile

Color correction

358520, 358530, 358534, H04N 156, H04N 160

Patent

active

055173357

ABSTRACT:
Adaptive preprocessing is performed on the three primary color signals generated during the scanning of a color image in order to enhance the perceived saturation of the dominant primary color. This preprocessing is performed by removing a small increment from the least intense primary color and adding the same increment to the most intense primary color. In this manner the overall brightness of the pixel is preserved, but the perceived saturation is increased. The increment that is effectively transferred from the least intense primary color value to the most intense primary color value is based on the relations of the three primary color values to each other in order to avoid visible color artifacts.

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