2006.03.13 16:19 "Re: [Tiff] CCITT Group 4 images", by Joris Van Damme
Philip,
I have CCITT Group 4 compressed images that are not contained within TIFF files. Can I use Libtiff to decompress the images?
It is possible, but it is not easy.
You can redefine the LibTiff IO routines. Thus, you can make 'm such that they 'read' a fake valid TIFF file header, a fake valid TIFF IFD, and your real CCITT group 4 data, all combined into a valid TIFF. LibTiff's output then is the decompressed data.
Similar techniques are used in the tiff2pdf contribution.
Joris Van Damme
info@awaresystems.be
http://www.awaresystems.be/
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