On 2010-07-18 12:46, Klaus Post wrote:
>> 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'll take your word for it. My understanding of demosaic algorithms is 
pitiable.

> I have filed a bug a while ago for a better high-quality demosaic
> routine, which you can follow:
>
> http://bugzilla.rawstudio.org/show_bug.cgi?id=290
>    

Wonderful! I'll check in from time to time.

> 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.
>    

Too bad. If you ask the author, maybe he'll consider relicensing it. 
Considering what you've accomplished with RawSpeed, though, I see good 
reason to be optimistic about your ability to squeeze more speed out of 
it, but until you do, having something that works would be better than 
nothing.

RT is bloody slow compared to Rawstudio. Granted, I haven't used it 
much, but I wouldn't want to use it for high-volume work. On first 
impression it seems much more advanced than Rawstudio, and is probably 
superiour for tweaking individual images. However, such basic things as 
copy-paste of settings across a number of images and being able to make 
several versions of the same image, not to mention the speed, of course, 
makes Rawstudio the clear winner for me. I have a feeling, though, that 
I'll start to use RT for those few pictures that warrant all my love. :-)

> Thanks - it is always good to have good test images! No test chart can
> beat real-world examples :)
>    

I'm happy to help. Anything to avoid hacking C(++)! :-)


Martin

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