[Freegis-list] Re: ECW and MrSID and JPEG2K

[Bernhard Reiter]

On Tue, Jun 18, 2002 at 01:30:11PM -0600, Roger Bedell wrote:
> Both Lizardtech (MrSID) and ErMapper have patents on their compression
> technology. MrSIDs patents were from LANL, ErMapper did their own. They
> both use Wavelet compression technology. Another technology that no one
> uses (but should!) is Jpeg2000 which is an open format using wavelet
> compression. I've done some trials using it which show similar
> compression results to the others. There are some open source
> implementations of Jpeg2K as well.

I've heard that jpeg2000 is also patent encumbered.
	http://www.advogato.org/article/327.html

This would mean unless the patent is licensed to everybody
unlimited without royalties (basically completely rendering the
patent useless) Free Software implementations cannot exist.

You always would have restriction on the freedom to use the software
for all purposes.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 248 bytes
Desc: not available
Url : http://www.intevation.de/pipermail/freegis-list/attachments/20020618/5cace997/attachment.bin