Re: [Gegl-developer] Color temperature correction GeglOperation

2008-04-26 Thread Øyvind Kolås
On Fri, Apr 25, 2008 at 6:52 PM, Jan Heller [EMAIL PROTECTED] wrote: I wrote it to better familiarize myself with Gegl and I am posting it here in hope it will be useful for others. I think it is a good operation to have, so I have commited a slightly modified version to svn. GEGL and babl

Re: [Gegl-developer] Color temperature correction GeglOperation

2008-04-26 Thread Jan Heller
Hi, On 11:09, Sat 26 Apr 08, Øyvind Kolås wrote: On Fri, Apr 25, 2008 at 6:52 PM, Jan Heller [EMAIL PROTECTED] wrote: I wrote it to better familiarize myself with Gegl and I am posting it here in hope it will be useful for others. I think it is a good operation to have, so I have

Re: [Gegl-developer] Color temperature correction GeglOperation

2008-04-26 Thread Kevin Cozens
Jan Heller wrote: On 11:09, Sat 26 Apr 08, Øyvind Kolås wrote: It would also be nice to replace the planckian locus lookup table with a function that approximates it. I played with MATLAB for a while and came up with rational functions of degree 5 that approximate the Planckian locus