🚀 go-pugleaf

Hi folks,

     Perhaps this belongs in the X newsgroup, but I don't feel
real at home there -- PostScript is more my thing.  I support a
PostScript interpreter for the V-Systems VSI*FAX product, and
a customer has reported a problem converting X window dump files
into the .fax format.

     The window dump is all grayscale, with white letters, and
the problem is the grayscale background -- it's a 50% halftone.
Those of you familiar with the T.4 encoding scheme know that this
is about the theoretically worst possible pattern to send, and
we're seeing 15- and 20-minute transmission times for a single
page.

     Normally I would just set a different screen or modify the
transfer function, but it seems that xpr is converting the
halftone into the ultimate on-and-off bits -- we get a one-bit
deep image with no useful grayscaling information to shortcut
around.

     I am not real motivated to learn X, and if somebody else
has already gone down this road, it would help me a lot.  In
the meantime, I'll be trudging through the source to xpr...

     Stephen

-- 
Stephen J Friedl | Software Consultant | Tustin, CA |     +1 714 544-6561
3b2-kind-of-guy  | I speak for me ONLY |   KA8CMY   | uunet!mtndew!friedl
 
Attorneys are paranoid because they assume everybody else is dishonest too