Re: Re: associated alpha

At 11:57 AM 2/5/2005 -0600, Bob Friesenhahn wrote:

>
>Presumably this would then work
>
>   gm convert -define tiff:alpha=unassociated old.tiff \
>              -define tiff:alpha=associated new.tiff

Suppose old.tiff has unassociated alpha that is mismarked
associated.  What happens?  old.tiff is read and the tag is
changed to unassociated. OK so far.  Then new.tiff is written
with the tag changed back to associated.  Eh?  This apparently
would write out an identical (wrong) new.tiff == old.tiff.

Glenn



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