comp.lang.idl-pvwave archive
Messages from Usenet group comp.lang.idl-pvwave, compiled by Paulo Penteado

Home » Public Forums » archive » LZW in IDL
Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend 
Switch to threaded view of this topic Create a new topic Submit Reply
LZW in IDL [message #39746] Wed, 09 June 2004 10:50
Jonathan Joseph is currently offline  Jonathan Joseph
Messages: 69
Registered: September 1998
Member
While checking in on the whole LZW issue recently, I read the following
on an RSI website (http://www.rsinc.com/services/techtip.asp?ttid=3543)

"The LZW compression patent held by Unisys, which is the basis for their
claims surrounding the GIF file format, expired in the U.S. on June 20,
2003, however Unisys� patents in Japan, and Europe expire June 20, 2004,
and expire in Canada on July 7, 2004."

With the last of these patents expiring this summer, can we look forward
to using LZW encoding again in the next release of IDL, or is that a
pipe-dream? I don't have much dezire to create GIF images, but I do
create TIFFs, and in recent images I have found that using the packbits
compression actually creates larger files than when I use no compression.

-Jonathan
  Switch to threaded view of this topic Create a new topic Submit Reply
Previous Topic: .dat file size
Next Topic: Contour Plotting

-=] Back to Top [=-
[ Syndicate this forum (XML) ] [ RSS ] [ PDF ]

Current Time: Wed Oct 08 13:07:19 PDT 2025

Total time taken to generate the page: 0.00616 seconds