Color subtraction HELP needed

D
Posted By
Dario
Feb 21, 2006
Views
3233
Replies
0
Status
Closed
Hi, I am trying to figure out how to automatically subtract a color from an image. I created a model so that i can play with:
http://img49.imageshack.us/img49/5918/testremovecolor2wm.jpg The original solid ping wide rectangle was superimposed with a 50%transparent light blue rectangle.

Now, is there a tecnique to "subtract" the blue rectangle and get back the pink one? I am playing with Apply image and Calculation with no success.

Of course this is an artificial example, but if i understand this i can apply the method to othee real photos.

I use Photoshop CS2

thanks Dario

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