>> Are there any standard algorithms for this? It seems "reasonable" that
>> what it "should" do is look for a bright red colour and change that to
>> black. It might be easier to do that using luminance values though.
>> (And looking at the luminance and Cr / Cb values.)
Here is a possible process:
-look for the bright red colour
-remove the red layer from the image at this location
-keep the green/blue layers, and replace the red one by one of the other two.
Just an idea, I use this process (with a manual selection of the area
to treat)
to solve the problem, and usually it works very well.
François
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