Hi, On 18:36, Sat 26 Apr 08, Kevin Cozens wrote: > 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 > > dataset reasonably well. Attached is a modified version of > > the operation using these approximations. > > I haven't looked at the code yet, but I would have thought execution would be > faster using the lookup table than having to calculate values using a formula > especially given that the formula only approximates the values of the table. > In the previous version of the code the values outside the lookup table got interpolated anyway. The approximating functions are really quite good and pretty fast. Since this computation only takes place only at the beginning of the operation and not per pixel basis, the speed impairment is really negligible. Regards, Jan _______________________________________________ Gegl-developer mailing list Gegl-developer@xxxxxxxxxxxxxxxxxxxxxx https://lists.XCF.Berkeley.EDU/mailman/listinfo/gegl-developer
