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January 2008
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2008.01.10 19:03 "LibTiff..Reading partial strips", by Nikhil Shirahatti
Hello All, 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 the strips we deal with are huge(long) and hence by having the ability to break them down and process them allows me to parallel process. I hope to break them down to a mxn (no. rows x length) and store them as my data structure (called tiles - different from the tiff tiles). What I have tried: I have tried hacking the TIFFReadRGBAStrip() ..which involved changing the gtStripContig() so I have a gtStripContigWithOffsets(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h, uint32 wOffset /*= 0*/, uint32 hOffset /*= 0*/) but before I paste code and ask for scrutiny .... was wondering if someone else out there has tried it? Also, if someone has successfully streamed a tiff file and could point me in the right direction that would be helpful. I am using c#. and the libtiff has a managed wrapper. Cheers, Nikhil -- ----------------------------------------------------------------- Nikhil V Shirahatti http://vision.cs.arizona.edu/nvs