increase image lightness
decrease image lightness
warmer colors
colder colors
| unprocessed image |
imageFilterGammaFast( $image, 1.3 ) increase image lightness |
imageFilterGammaFast( $image, 0.7 ) decrease image lightness |
|
imageFilterGamma( $image, 1.2, 1.0, 0.8 ) warmer colors |
imageFilterGamma( $image, 0.8, 1.0, 1.2 ) colder colors |