Method and device for adaptive color correction

Details Method and device for adaptive color correction Method and device for adaptive color correction

2005-09-02

2009-12-15

Yenke, Brian P (Department: 2622)

Television

Image signal processing circuitry specific to television

Noise or undesired signal reduction

C348S631000, C348S645000, C348S674000, C348S679000, C358S520000, C386S349000

Reexamination Certificate

active

07633557

ABSTRACT:
The present invention relates to a method and a device for adaptive color correction by weighting procedure according to the pixel luminance so as to adjust the pixel chrominance. The present invention prevents color noise occurring in the dark pictures. The method for adaptive color correction, comprises steps of: providing a luminance value of a pixel: determining a weighting value corresponding to said luminance value of said pixel, wherein said weighting value substantially increases when said luminance value increases; and adjusting chrominance of said pixel according to said weighting value.

REFERENCES:
patent: 6137540 (2000-10-01), Desprez-Le Goarant et al.
patent: 6542187 (2003-04-01), Hamilton et al.
patent: 7154557 (2006-12-01), Itoh et al.
patent: 7193659 (2007-03-01), Huang et al.
patent: 7405771 (2008-07-01), Lee et al.
patent: 7453524 (2008-11-01), Lee et al.
patent: 2007/0041637 (2007-02-01), Matsushima
patent: 1514652 (2004-07-01), None

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