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April 2007
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2007.04.05 21:53 "Re: Floating point RGBA", by Bob Friesenhahn
On Thu, 5 Apr 2007, Joris wrote: > mark meijer wrote: >> Sample Format: IEEE floating point >> Compression Scheme: PackBits > > That seems like a very strange combination. If I remember correctly, > packbits is a byte-based RLE scheme. Applied to floating point data, > compression ought to be very inefficient. > > Is your image confidentiel? Can you send a copy my way? I probably won't be > able to help you right away, but gathering floating point images from > various sources now may be helpful at some point in the future. GraphicsMagick seems to read the image ok (using recent libtiff) so I think that the problem encountered is likely due to an issue with the application using libtiff, or perhaps an old libtiff is used that has a bug. Bob ====================================== Bob Friesenhahn bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/