@Wilbert,
Fizick's FFT3DFilter (Version 1.3 - July 20, 2005) has reached a point where it may be better at denoising and preserving detail than PixieDust:
http://forum.doom9.org/showthread.ph...122#post689122
Since your comparison results are "based on our visual inspection", would you & Ivo (i4004) be willing to put this filter through your test?
North