饱和均衡器- GIMP插件

Saturation equalizer lets you modify saturation of an image more precisely, f.e. enhance saturation of less saturated areas, but avoid oversaturation of more saturated pixels. In addition, you can modify brightness similarly as with "levels" tool and change temperature of an image. You can also auto-align colors to get rid of / mitigate color cast (wrong temperature, colored snow and so on). Plugin can freely switch among 5 color models / color spaces: two onw, HSV, HSL and YUV. Here (visit Downloads section) you can download source code with instalation instruction for linux. For windows binaries (not my work) look on this thread on gimpchat.com

satequalizer
saturate.c
README.txt