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November 1999
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1999.11.30 23:07 "Re: libtiff 3.5.3 release.", by Martin Bailey
At 17:23 30/11/99 -0500, Michael L. Welles wrote: >Unfortunatly, the compression removal means that saved image size has >grown dramatically. Without a change in the TIFF spec to support >another lossless compression format, this is unavoidable. > >The library can use zip for lossless compression (thanks, Sam!), but >as this is not part of the spec, TIFFs using zip compression may not >work with other software. At present the only specification for ZIP in TIFF would appear to be the code in LibTIFF, so only applications built around LibTIFF will support ZIP. If somebody were to produce a text specification, akin to the draft tech note 2 that defined the used of Compression=7 for new format JPEG, then it's possible that more software would be written to support ZIP in TIFF. I realise that this reinforces a two-level specification, which is not a good thing, but it may also provide a little pressure in the right places for things to be moved on in a more 'official' way. Regards Martin Bailey ------------------------------------------------------------- Senior Technical Consultant martinb@harlequin.com Digital Print & Publishing +44 1223 873800 Harlequin http://www.harlequin.com ------------------------------------------------------------- If my views didn't usually coincide with those of my employer I probably wouldn't work here, but I am not a spokesman for Harlequin and the buck stops with me for what I say. -------------------------------------------------------------