Method for color saturation adjustment in an RGB color system

Details Method for color saturation adjustment in an RGB color system Method for color saturation adjustment in an RGB color system

2006-05-09

2006-05-09

Natnael, Paulos M. (Department: 2614)

Television

Image signal processing circuitry specific to television

Chrominance signal amplitude control

C382S167000

Reexamination Certificate

active

07042521

ABSTRACT:
The present invention relates to a method for adjusting the saturation levels of the pixels of a time varying image being represented by RGB color sample vectors {right arrow over (C)} in an RGB color system. The method does not require the RGB color sample vectors {right arrow over (C)} to be converted into YUV samples in order to subsequently perform saturation adjustment. The method includes steps of: decomposing an RGB color sample vector {right arrow over (C)} into a white vector {right arrow over (w)} and a color tone vector {right arrow over (C)}T; obtaining a saturation adjusted color tone vector {right arrow over (CTo)} by multiplying the color tone vector {right arrow over (C)}Tby a saturation adjustment parameter; obtaining a saturation adjusted RGB color sample vector {right arrow over (C)}oby adding the white vector {right arrow over (w)} and the saturation adjusted color tone vector {right arrow over (CTo)}; and using the saturation adjusted RGB color sample vector {right arrow over (C)}oto represent a color pixel of an output image.

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