Re: How to make Tiff with a mask?
Re: How to make Tiff with a mask?
- Subject: Re: How to make Tiff with a mask?
- From: Bertil Holmberg <email@hidden>
- Date: Thu, 24 Jan 2002 14:36:42 +0100
- Organization: MacMAS
I ran across the "unassociated alpha" warnings while wrestling with the
compositing enigma. As is often the case, the best documentation is to
be found in an obscure corner -
http://tuvix.apple.com/techpubs/macosx/ReleaseNotes/AppKitOlderNotes.html.
The short note about premultiplication guided me to "tiffutil" that
became my first command line adventure since 1984!
In addition, I found the "CompositeLab" example invaluable when trying
out my transparent image with the compositing methods.
I still don't fully understand how compositing works, however, and would
be very grateful for any suggestion for supplementary documentation or tutorials.
Thanks, Bertil