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Green screen issue

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Dylan Hargreaves
Green screen issue
on Sep 13, 2010 at 2:41:15 pm

Hi all,

Encountered a little problem with keying out a green screen. Basically, as the talent approaches camera, the green of the floor is reflecting off her shin. As a result when i key out the green, a good portion of her leg disappears!

I've tried playing with the tolerances of the black and white clipping but of course, curing the leg leads to problems elsewhere.

I'd really rather not have to mask around her legs as I have around 20 different versions of the shot. (it was a fashion/catwalk thing)

Thanks in advance!

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Dave LaRonde
Re: Green screen issue
on Sep 13, 2010 at 2:53:39 pm

You may not need to do roto work. You may simply have to pull TWO keys using two layers, and animate a garbage matte to merge them.

A chroma key is rarely perfect. Multiple layers get used all the time.

Dave LaRonde
Sr. Promotion Producer
KCRG-TV (ABC) Cedar Rapids, IA

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