[Rawstudio-dev] Sharpen take 1

Martin Egger martin.egger at gmx.net
Tue Dec 11 09:23:05 CET 2007


> I've committed convolition and a sharpen function - here is a patch to
> test it and see the results.
>
> http://rawstudio.org/files/patches/akv/rev1521_sharpen_slider_take_1.patch

Thanks!

> Any comments? Like/dislike?

I just did some *very* quick tries and have the following observations:

- Speed :-( It's not very fast ...
- Sharpening looks *great* in image parts with lots of details
- Color noise is sharpened too much with a sharpening setting of 3+ for ISO100 or 2+ for ISO1600. Maybe some more selectable parameters are needed here (like radius and threshold in USM)? Or include some logic with modifies such parameters based on the ISO?

Martin


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