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From Gary Gregory <>
Subject RE: 16-bit pgm images
Date Mon, 16 Dec 2013 04:27:02 GMT
Could you please create a JIRA issue to track this?

Thank you,

-------- Original message --------
From: Paul Dumais <> 
Date:12/13/2013  22:43  (GMT-05:00) 
Subject: 16-bit pgm images 

There seems to be a bug in the documentation at:
for the pgm format support. It claims full read support for pgm files.

Reading of 16-bit pgm images does not appear to be supported. When I
display the buffered image read via the Imaging class, I see a very
fuzzy image which I imagine is what you would see if you tried to read
in a 16 bit pgm via a loader that expects 8 bits (you get overflow on
the unsigned 8 bit ints.

I think documentation should explicitly note which bit depths are supported.


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