[Rawstudio-dev] Any efforts to control moiré?
klauspost at gmail.com
Sun Jul 18 12:46:41 CEST 2010
> Well, there's a clear difference in files processed with Rawstudio and
> Raw Therapee respectively. Damn, by comparison RS is slow and, at least
> the 3.0 alpha, unstable. But then it also seems that RT applies many
> more different filters.
Yes - that seems quite nasty. In general the demosaic does a pretty
good job, but it does seem to break down on high-detail/aliased areas,
when the camera itself does little to prevent aliasing.
I have filed a bug a while ago for a better high-quality demosaic
routine, which you can follow:
We cannot copy the Rawtherapy demosaic routine due to license issues
(GPLv2 vs GPLv3) - but I'd like to re-implement it anyway to see if we
can squeeze more speed out of it.
> I've uploaded a raw (moire-test.nef) and RT's output
> (moire-test-rawtherapee.jpg). I chose this particular picture because
> RT's output shows very little moiré while Rawstudio's output has quite a
Thanks - it is always good to have good test images! No test chart can
beat real-world examples :)
Regards, Klaus Post
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