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Amiga Plus 1995 #5 & #6
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000514_owner-lightwave-l _Fri Apr 21 10:35:24 1995.msg
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From: alan.chan@oubbs.telecom.uoknor.edu
Message-ID: <9504200814.0BKOM00@oubbs.telecom.uoknor.edu>
Date: Thu, 20 Apr 95 08:14:20
Subject: RE: YET ANOTHER SUGGESTION N
To: lightwave-l@netcom.com
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> This is pretty terrible for blue screen work. Its only really
> suitable for
> working with digitally created or hand painted composites.
>
> > > Also there's a plug-in for PhotoShop by some company that also
> does this.
>
> The Cinefusion software from Ultimatte is one of the industry
> standards for
> desktop blue screening/mask extraction. It does an excellent job.
Is the algorithm patented? How does Ultimatte work? Would it be possible to
look at the blue values from the RGB files and turn it into an 8-bit
transparency? From what I saw at NAB, you simply turn a contrast knob to adjust
the keying factor, isn't it possible to write a program to extract the blue and
allow the user to tweak contrast on the (now-transparency) file?
Alan Chan
Vision Digital