| 摘要 |
A low complexity apparatus ( 100 ) and method ( 200 ) for variable color saturation, performed in combination with RGB to YUV color space conversion, is used to direct input signal noise away from a luminance channel, to which the human eye is highly sensitive, and into chrominance channels. The apparatus ( 100 ) is adapted to perform color conversion and variable color saturation of input primary color signals red, green and blue to produce variable chrominance signals and luminance invariance. The apparatus includes a luminance composition module ( 105 ) dependent on non-varying luminance composition coefficients. A first chrominance composition module ( 110 ) is dependent on the non-varying luminance composition coefficients and includes a first variable saturation coefficient that is multiplied by the difference between low pass filtered red and green primary color signals. A second chrominance composition module ( 115 ) is also dependent on the non-varying luminance composition coefficients and includes a second variable saturation coefficient that is multiplied by the difference between low pass filtered blue and green primary color signals.
|
