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November 2005

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2005.11.02 16:58 "Writing bilevel and transparent TIFFs efficiently", by Rupali Holmes
2005.11.03 15:44 "Re: Writing bilevel and transparent TIFFs efficiently", by Bob Friesenhahn
2005.11.03 17:06 "Re: Writing bilevel and transparent TIFFs efficiently", by Frank Warmerdam
2005.11.07 19:16 "Re: Writing bilevel and transparent TIFFs efficiently", by Joris Van Damme
2005.11.07 20:31 "Re: Writing bilevel and transparent TIFFs efficiently", by Bob Friesenhahn
2005.11.07 21:09 "Re: Writing bilevel and transparent TIFFs efficiently", by Joris Van Damme
2005.11.03 15:53 "Re: Writing bilevel and transparent TIFFs efficiently", by Gerben Vos

2005.11.07 20:31 "Re: Writing bilevel and transparent TIFFs efficiently", by Bob Friesenhahn

> > It is possible to use an associated alpha channel with palette
> > (PHOTOMETRIC_PALETTE) images,
>
> Is it? I'm not entirely convinced.

I did not see anything in the specification which specifically forbids 
it.  However, it is much easer to read such files than to write them 
since writing them requires computing a palette which is conjoined 
with the alpha channel.  A very ugly thing indeed.

Bob
======================================
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/