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2006.03.04 03:33 "Re: LZW Compression with 16-bit TIFF", by Frank Peters
On Fri, 3 Mar 2006 21:12:17 -0600 (CST) Bob Friesenhahn wrote: > > 16 bit data can be difficult to compress. Have you tried enabling > horizontal differencing? > > TIFFSetField(tiff,TIFFTAG_PREDICTOR,2); Why should 16-bit data be any different in principle that 8-bit data? A change in data length should not have any bearing on compression (at least that's what I would first think). As for horizontal differencing, supposedly that's what the "-c lzw:2" option accomplishes. Is there another way to enable this by setting some parameter in the source code and then recompiling? Frank Peters