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Path: utzoo!watmath!clyde!rutgers!lll-crg!seismo!rochester!ritcv!ref0070
From: ref0070@ritcv.UUCP (Robert E. Fortin)
Newsgroups: net.micro.atari16
Subject: Re: New way to post binaries - discussion on format
Message-ID: <150@ritcv.UUCP>
Date: Sun, 26-Oct-86 21:01:03 EST
Article-I.D.: ritcv.150
Posted: Sun Oct 26 21:01:03 1986
Date-Received: Mon, 27-Oct-86 05:24:15 EST
References: <2035@dalcs.UUCP> <2844@watmath.UUCP> <1275@batcomputer.TN.CORNELL.EDU>
Reply-To: ref0070@ritcv.UUCP ()
Distribution: net
Organization: Rochester Institute of Technology, Rochester, NY
Lines: 25
Keywords: compression

In article <1275@batcomputer.TN.CORNELL.EDU> braner@batcomputer.UUCP (braner) writes:
>[]
>
>I've been thinking recently about transferring ST screen-dumps (32K
>bit-maps, one bit deep in "hires" (monochrome) mode) over the modem
>(to a VAX running UNIX, to print the graphics on a laser-printer).
>
>Since my applications are concerned with B&W line drawings which are
>mostly white space, it would be very inefficient to send the whole
>32K.  Also I'd like some compression method to compress it before I
>ever save it on the ST disk.
>

I have the C - source for a compression algorithm that reduces files to
about 20-30% of their original size. It uses the LZW algorithm (if you
know what that is - I don't). It would be great to compress your files,
but you might want to uuencode them before transmitting them. The only
problem is that I don't have a C-compiler yet. If anyone is interested,
I could get it to work on Unix 4.3 and then someone could translate it
to the ST. You would need to keep the uncompress algorithm on your host
system anyway.


Bob Fortin
{allegra seismo decvax}!rochester!ref0070