Re: Question about IIF config
Jeremy Selan <jeremy...@...>
Marie,toggle quoted message Show quoted text
Thanks for catching this! The currently shipping IIF configuration
is based on an older specification (I forget the exact version, but
it's around 8 months old), so my hope is the versions will explain the
differences you are seeing. We've wanted to update to the latest RRT
for awhile now, so let us take a stab at it and we'll see if it fixes
everything. We will also take care to note in the profile which RRT
version it is specifically, to help avoid ambiguity in the future.
The noise (discontinuity) you are seeing in the 3d RRT lut is an
artifact of how we originally generated this table, we'll make sure
it's all fixed in the updated version.
The AllocationTransform you mention describes a linear -> log
transform (a perfect mathematical log operator), where the range from
( 2^-10.4739 , 2^5.52607) is rolled into (0.0-1.0) for sampling with
a 3d lut. The lut was generated by taking a 3d lattice image (0-1) ,
unwarping it through the inverse of the transform, and then applying
the analytical rrt.
2011/10/4 Marie Fétiveau <m...@...>:
Hello all !