Color image correction based on characteristics of a highlights

Details Color image correction based on characteristics of a highlights Color image correction based on characteristics of a highlights

1991-08-02

1993-01-19

Coles, Sr., Edward L.

Facsimile and static presentation processing

Static presentation processing

Attribute control

358 22, 3582611, H04N 974, G03F 308

Patent

active

051811057

ABSTRACT:
A color image processing apparatus comprises: a circuit to provide a color image signal consisting of a luminance signal and two color difference signals; a converter to convert the two color difference signals into the hue signal and saturation signal; a compressing circuit to independently compress the dynamic ranges of one of or both of the luminance signal and the saturation signal and to output; a memory to store the hue signal and the output of the compressing circuit; and a color printer to reproduce the color image on the basis of the hue signal, saturation signal, and luminance signal stored in the memory. The compressing circuit performs the compression on the basis of a frequency distribution of the input signal levels. With this apparatus, the color balance can be automatically adjusted by use of correction ROMs of a small memory capacity.

REFERENCES:
patent: 4668679 (1987-05-01), Jung
patent: 4733295 (1988-03-01), Hemsky et al.
patent: 4763186 (1988-08-01), Belmares-Sarabia et al.
patent: 4908701 (1990-03-01), Udagawa
patent: 5060060 (1991-10-01), Udagawa et al.
patent: 5081535 (1992-01-01), Kondo et al.
patent: 5099341 (1992-03-01), Nosaki et al.
patent: 5119180 (1992-06-01), Okamoto

Affiliated with

Also associated with

Rating

Color image correction based on characteristics of a highlights does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Color image correction based on characteristics of a highlights , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color image correction based on characteristics of a highlights will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-105140