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September 1994
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1994.09.22 10:13 "A note on (group4) compatibility issues", by Fredrik Lundh
(from the "TIFF CIEL*a*b* Question (with Answer)" thread) > Fredrik Lundh writes: > >But don't ship such files outside your office... When using > >Compression=3 or 4, I'd stick to SamplesPerPixel=1, > >PhotometricInterpretation=0, and RowsPerStrip=ImageLength! > +++++++++++++++++++++++++ > Karsten Spang writes: > WHAT? You can't be serious! What if your ImageLength and ImageWidth is > 10000, 20000, or more? For G3 compression you should stick to the "8k" rule > for RowsPerStrip. [...] True. But as long as I have to cope with the universe of broken TIFF G3/G4 readers out there, I'll stick to my own rule. Some readers messes up on Photometric=1, some on striped files, some on files where the TIFF directory is larger than 1024 bytes, some on compression=2 but not on compression=3, some on... Guess too many TIFF hackers test their readers only with output from their writers. And here I am, stuck in the middle... But yes, things are getting better :-) /F