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September 2008

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2008.09.30 19:42 "Rotating TIff Images", by Richard Nolde

I'm getting ready to upload an update to TIFFCROP in the hope that it 
will be distributed with the next major release. I note that the version 
in the 3.9.0 CVS tree is a year behind my most recent upload to the 4.0 
CVS tree so I want to get this into the distribution shortly. In testing 
and then fixing a few bugs that crawled into the code during my recent 
work, I thought about the my rotate image functions.  They work as 
advertised but they do not update the TIFFTAG_ORIENTATION tag in the 
image after the data has been rewritten. Would it be desirable for this 
tag to be updated when the image is rotated and does anyone know of TIFF 
readers that take it into account when displaying an image?

Richard Nolde
Tiffcrop author