Re: [hylafax-users] tif file sizes.

["Bodo Noering" <bn@urania.com>]

Richard,

> Does anyone know why hylafax keeps the tiff sizes so small.
> Images that we scan in as tiffs at 300dpi resolution with
> our document scanner are up to 10 times the size of the
> hylafax's incoming faxes. can anyone suggest how I can get
> the size of these files more in-line with those tiffs that
> hylafax creates?

G3/G4 TIFFs are only black&white images, resolution is 204 x 98 dpi
(normal resolution) or 204 x 196 dpi (high resolution). A scan of
300 x 300 dpi is 2-4 times larger. AFAIK, scanning software doesn't
support G3/G4 format, but only LZW compression or no compression at
all. If you scan a document using 8 Bit grayscale, size increases by
~8 times again. The only way I can think of, is to reduce resolution
to 200 x 200 dpi, because your scanning software won't support
different resolution at width and height, I guess. You might use
libtiff to create G3/G4 faxes with the same size, you may download
it somewhere at SourceForge (sorry can't remember the link). This is
also available for Windows.


Best Regards
Bodo

--
___________________________________________
Bodo Noering Consulting
Zur Alten Faehre 23 . D-45219 Essen
Phone +49-2054-971790 . Fax +49-2054-971791
bn@urania.com . http://www.urania.com

Highend Fax: HylaFAXR (www.hylafax.org)
and Cypheus (www.cypheus.de)
___________________________________________



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