[gs-bugs] [Bug 691175] Multi-strip TIFF files cause problems with fax software

bugzilla-daemon at ghostscript.com bugzilla-daemon at ghostscript.com
Tue May 4 18:22:19 UTC 2010


http://bugs.ghostscript.com/show_bug.cgi?id=691175

--- Comment #6 from Hin-Tak Leung <hintak at ghostscript.com> 2010-05-04 18:22:18 UTC ---
(In reply to comment #5)
> From where do you conclude that the maximum size of an 11x17" page at 200 dpi
> is 1MB?  Data compression varies with the data itself, and if we're talking
> about G4/MMR compression there are some images which actually encode *worse*
> than leaving them uncompressed (so encoding them actually increases the data
> space used).

I can't comment on the rest of your questions, but 11x 17 at 200dpi (at 1 bit)
comes to 0.935 MiB exactly, and with overheads, would be under 1MB. I don't
remember the details of the worse case scenario for G4, but I think it is
possibly adding 1/8 on top. Any "normal" work load never get anywhere near the
worst-case compression scenario. e.g. if you have 1/8 of areas as white
borders, which compresses very well, would compensate for the rest of the page
being white-noise.

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