Amplifying Rainbow?

[madness]

Hi all,
I've been playing around with avisynth recently I've been thinking about how would I go about amplifying rainbow to the video.
Any ideas how would I go about it?

Thanks

[rfmmars]

Ok, I will bite, are we talking rainbows in the sky or the color artifacts in video?

richard
www.photorecall.net

[Mug Funky]

hmm... usually if you can amplify just the rainbows, you could also remove them.

the problem is that rainbows are hard to detect.

if you want to make a simplistic method, an unsharp mask would amplify edges, and most rainbows are found there. if you were to subtract a blurred clip from a sharp clip, then only increase contrast on the chroma planes around the remainder, you would get a rainbow amp. there'd also be some detail amped as well though.