Method for color saturation adjustment with saturation...

Details Method for color saturation adjustment with saturation... Method for color saturation adjustment with saturation...

2006-05-09

2006-05-09

Lee, Michael H. (Department: 2614)

Television

Image signal processing circuitry specific to television

Chrominance signal amplitude control

C348S647000, C348S648000

Reexamination Certificate

active

07042520

ABSTRACT:
A method for adjusting and limiting a color saturation level S of a color pixel of an input image includes steps of: obtaining a first chrominance value U and a second chrominance value V representing the color pixel of the input image; determining the color saturation level S in dependence on the first chrominance value U and the second chrominance value V; determining a saturation limiting parameter β in dependence on the color saturation level S; obtaining an adjusted first chrominance value by multiplying the first chrominance value U by the saturation limiting parameter β; obtaining an adjusted second chrominance value by multiplying the second chrominance value by the saturation limiting parameter β; and representing a color pixel of an output image with the adjusted first and second chrominance values. The process is repeated for each pixel of each image of the input video signal.

REFERENCES:
patent: 4633299 (1986-12-01), Tanaka
patent: 4812902 (1989-03-01), Fuchsberger
patent: 4953008 (1990-08-01), Kaye
patent: 4953011 (1990-08-01), Mori et al.
patent: 6177962 (2001-01-01), Rumreich et al.
patent: 1 017 241 (2000-07-01), None
patent: 1 326 425 (2003-07-01), None
Collins English dictionary, 1994, p. 1377, 3rded, HarperCollins Publishers, Great Britain.

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