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October 2000
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2000.10.03 20:44 "Varying BitsPerSample", by Rick Lamont
There was a discussion on a newsgroup recently about having TIFF files with different data formats per channel. For example, 8-bit RGB with a 32-bit Z channel. Some thought that the TIFF format does not allow this but then Derek Kusiak wrote: > Unless I'm misunderstanding what the TIFF 6.0 spec says, that's not > true: > > "Note that this field [BitsPerSample] allows a different number of bits > per component for each component corresponding to a pixel. For example, > RGB color data could use a different number of bits per component for > each of the three color planes." (p.29) Is there a limitation in libtiff that prevents exploitation of this section of the spec? I'm interested in interpretations of the spec, pros/cons of this feature, limitations and workarounds. Thanks, Rick LaMont Dot C Software, Inc.