I'm working on an image-processing software on iPhone and get stuck in the selective color function as photoshop.
How to caculate new RGB values after selective color adjustment on a pixel via code?
I mean how to create a tool which has the same function as Photoshop's selective color(In Image->Adjustment->Selective Color).
Special thx!
Finally I sampled data of images which have be processed by photoshop, and got a quadratic curve with hue. But it is not exactly the same as photoshop's.