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Compare layers and subtract similarities? - Composting question.

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tomcarter
Compare layers and subtract similarities? - Composting question.
on May 11, 2006 at 1:25:42 am

Hey.

Say I have two stills of exactly the same interior (shot from on a tripod); one with it empty, the other with a figure stood in the middle. Is there anyway that I can use the empty layer as mask for the figure layer to subtract everything except the figure (ie everything that is the same in both, a bit like keying but without a greenscreen)? I've been through all the blending modes and none of them really do the trick.

Hope this makes sense - I need to find a technique to do this without having to manually mask every frame as there are quite a few in the series,

Thanks,
Tom

http://www.crate20.co.uk


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