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January 2008
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2008.01.10 21:40 "Re: LibTiff..Reading partial strips", by Nikhil Shirahatti
I havent tried it..but the cautionary note that " It is not always possible to do so due to decompression constraints" scares me. I also read on the archive that "that *strip* *chopping* only works for uncompressed IFDs.". How common(or uncommon) is this? When would one use compressed IFD's? The tiff's we get can be compressed or uncompressed formats and we have to support them all. :) Nikhil On Jan 10, 2008 1:33 PM, Bob Friesenhahn <bfriesen@simple.dallas.tx.us> wrote: > On Thu, 10 Jan 2008, Nikhil Shirahatti wrote: > > > > This is the problem I' trying to solve: > > to read a strip but not a whole strip but only part of it...reason: some > of > > I believe that libtiff has a strip-chopping build option. This may be > in the build defaults. The strip-chopping option should break long > strips into multiple small strips/scanlines if possible. It is not > always possible to do so due to decompression constraints. Does this > feature not work for you? > > Bob > ====================================== > Bob Friesenhahn > bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ > GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ > > -- ----------------------------------------------------------------- Nikhil V Shirahatti http://vision.cs.arizona.edu/nvs