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September 2007

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2007.09.23 16:42 "G3 fax: EOL needed at the beginning of each strip?", by Comsquare Martin Osieka
2007.09.24 01:27 "Re: G3 fax: EOL needed at the beginning of each strip?", by Bob Friesenhahn
2007.09.24 05:56 "Re: G3 fax: EOL needed at the beginning of each strip?", by Joris Van Damme
2007.09.24 07:24 "Re: G3 fax: EOL needed at the beginning of each strip?", by Comsquare Martin Osieka
2007.09.24 07:51 "Re: G3 fax: EOL needed at the beginning of each strip?", by Joris Van Damme
2007.09.24 08:01 "Re: G3 fax: EOL needed at the beginning of each strip?", by Andy Cave
2007.09.24 08:32 "Re: G3 fax: EOL needed at the beginning of each strip?", by Joris Van Damme
2007.09.24 08:52 "Re: G3 fax: EOL needed at the beginning of each strip?", by Comsquare Martin Osieka
2007.09.24 08:58 "Re: G3 fax: EOL needed at the beginning of each strip?", by Andy Cave
2007.09.24 08:45 "Re: G3 fax: EOL needed at the beginning of each strip?", by Andy Cave
2007.09.24 09:03 "Re: G3 fax: EOL needed at the beginning of each strip?", by Joris Van Damme

2007.09.24 01:27 "Re: G3 fax: EOL needed at the beginning of each strip?", by Bob Friesenhahn

On Sun, 23 Sep 2007, ComSquare Martin Osieka wrote:

> I'm using libtiff 3.8.2 to decode tiffs containing fax images.
> Recently I received TIFFs showing white lines in the image.
> I decoded them and detected that only the first strip started with an EOL
> but not the others.
> The decoding of a strip always starts with SYNC_EOL() which eats up the
> first line of the strip if there's no EOL.
> The result is that at the end of the strip one line is missing, which is
> filled up with white pixels.

Are you able to make one of these problem images available for 
download from somewhere or send it in an email?

Libtiff is widely used, and while it definitely has bugs, a problem 
with image data access is usually quickly reported (as you have done) 
and fixed.

If you do believe that libtiff is doing something wrong, then you 
should post a formal bug report via the libtiff bug tracker.

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