2005.03.03 15:56 "Re: [Tiff] Tiff G4", by Bob Friesenhahn

I' have a Tiff compressed with G4.

Is it possible to run tiffcp and re-compress it to save space (even with lossy compression)?

Except for re-sampling/filtering the data to contain less detail and re-saving using G4 (or even LZW) compression, the only alternative that would save even more space would be to use JBIG compression, and libtiff does not seem to support that.

There is a (GPLed) libjbig. I understand that there are patents which apply to JBIG.

Current PDF supports JBIG compression so you can obtain commercial software to support it.

Of course these solutions are not TIFF.

Bob

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Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/