- From: Glenn Randers-Pehrson <glennrp@home.com>
- Date: Thu, 04 Oct 2001 08:35:14 -0400
- To: www-patentpolicy-comment@w3.org
Chris Lilley wrote: >Go read the patent, please. They have patented using a pair of color >images as alpha channels. This might or might not have prior art (it >might well, and I would encourage people to report it) but it is not the >same as 'patenting bitbasks' OK, look at pnmcomp.c, dated 1992, in the NetPBM tools. It does precisely what Apple's abstract says, using a separate file for the alphamap. Glenn
Received on Thursday, 4 October 2001 08:38:02 UTC