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October 2008
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2008.10.02 02:42 "Re: Image Orientation tag and rotating images", by Bob Friesenhahn
On Wed, 1 Oct 2008, Richard Nolde wrote: > > Since my code works with 1,2,4,8, and 16 bit data, the only cases that I > suspect will be an issue are floating point images. If anyone has a small > image with floating point data, I would be interested in seeing what > adjustments are needed. Which viewers can be used to display TIFFs with > floating point data? There is a floating point image included in the libtiff sample images. GraphicsMagick is able to display it although it requires some manual parameters to get the levels right (the file ranges between 0.0 and 720.0 or so) and does not pay any attention to rotation requests. I did recently create a new collection of sample TIFF images, including floating point ones, and put them out for ftp as "ftp://ftp.graphicsmagick.org/pub/outgoing/tiff-sample-images.tar.bz2" or "ftp://ftp.graphicsmagick.org/pub/outgoing/tiff-sample-images.tar.gz". These ones are little endian. Bob ====================================== Bob Friesenhahn bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/