[REBOL] Re: compression
From: greggirwin:starband at: 12-Sep-2001 13:50
Hi Hallvard,
<< I believe there are some restrictions for use of the LZW algorithm, and I
think that's why the PNG format was developed. So it might just be that
making an LZW compression function simply isn't legal without purchasing
some sort of a licence... I don't know. If I should decide to convert my
old java classes into some stammering rebol code, I'll check it out before
posting anything to the rebol community. Or does anyone know (for sure)
something contrary? >>
I don't know if Unisys is still pursuing things actively or not. If you
don't need GIF compatibility, I'd just go with PNG. If you just published an
implementation of LZW in REBOL "for academic purposes", you shouldn't get in
any trouble. The catch would come when you use it in an application. That
said, there are a number of commercial GIF tools out there (Alchemy
Mindworks has a couple I use), so maybe those guys could give you some
advice if necessary.
--Gregg
