[Image-SIG] [Zope] PIL and TIFF problem

[Chris Cogdon]

On Thursday, Sep 18, 2003, at 14:18 US/Pacific, Borja Prieto wrote:

> I have installed Easy Image and PIL 1.1.4 on my Zope 2.6.1 with Python 
> 2.1.3
> on Windows XP.
> It works well with jpg and other formats, but when I try to upload a 
> TIFF
> image (wich is precisely what I want) it gives me the error:
>
> IOError "decoder tiff_ccitt not available"
>
> I have followed the guide on Zope.org
> (http://www.zope.org/Members/SmileyChris/howto/pil_for_windows) to 
> install
> PIL, and I have no idea what can I be doing wrong. I will appreciate 
> any
> help you could give.

PIL doesn't support ccitt (group 3 or 4) decompression. Although it 
should not be that hard to write your own decoder and attach it into 
the PIL system. Group 3 (at least) encoding is fairly simple... I've 
done it previously with non-PIL applications.


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