Method of and apparatus for correcting color

Details Method of and apparatus for correcting color Method of and apparatus for correcting color

1996-09-11

1999-12-14

Grant, II, Jerome

Image analysis

Image enhancement or restoration

Intensity, brightness, contrast, or shading correction

358520, 358529, H04N 146, G06S 1500

Patent

active

060028068

ABSTRACT:
Hue, lightness, and saturation signals are obtained from an input signal, and hue direction intensity signals with respect to respective unit colors are determined using color corrective intensity functions for respective hues which have been established based on measured values. These hue direction intensity signals are multiplied into corrected intensity signals with respect to the respective colors, which are multiplied by desired correction coefficients. Resulting product signals for the respective unit colors are added into corrected signals with respect to given color signals.

REFERENCES:
patent: 5003326 (1991-03-01), Suzuki et al.
patent: 5386305 (1995-01-01), Usami
patent: 5450500 (1995-09-01), Brett

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