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From: gilge@ICSI.Berkeley.EDU (Michael Gilge)
Newsgroups: comp.lang.postscript,comp.dcom.fax
Subject: Compression of image matrices
Keywords: images, data compression,
Message-ID: <11757@pasteur.Berkeley.EDU>
Date: 7 Mar 91 20:37:06 GMT
Sender: news@pasteur.Berkeley.EDU
Organization: International Computer Science Institute, Berkeley, CA
Lines: 21

We are often faced with the problem of transmitting large image matrices 
to a postscript printer, e.g. sampled images or screen captures from X.
This causes large transmission times and we are thinking about compressing
the binary data before transmission. Together with the data, a postscript 
decompression program is also send to the printer. The printer applies 
the program to the data and kind of unfolds the original image matrix.

Before we start writing anything, has anybody ever done something like that?
Especially is there a postscript program to decode fax Group3 encoded
bitmaps?

Any hints are greatly appreciated.

Heinz W. Schmidt, hws@icsi.berkeley.edu
Michael Gilge,    gilge@icsi.berkeley.edu

International Computer Science Institute
1947 Center Street, Suite 600
Berkeley, California 94704
Phone: 1-415-642-4274-134
Fax:   1-415-643-7684