Compressing alt.sex.pictures files
Peter da Silva
peter at sugar.hackercorp.com
Wed Aug 29 23:00:55 AEST 1990
In article <1990Aug28.192024.22435 at zorch.SF-Bay.ORG> xanthian at zorch.SF-Bay.ORG (Kent Paul Dolan) writes:
> Hmmm. Good idea. Here's one suggestion for an experiment. Somewhere on
> the net, a month or two back, there was a suggestion that a good way to
> compress realistic images was to XOR scan lines after the first with their
> predecessor line, then LZW compress the output.
I believe that XORing alternate scan-lines and run-length-encoding the result
would do a better job. I've heard of this algorithm being pretty effective
in past discussions. Should one do this with the image bitplane-mapped or
pixel-mapped?
--
Peter da Silva. `-_-'
<peter at sugar.hackercorp.com>.
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