[Digikam-devel] [Bug 195561] Implement a selective saturation filter
Julien at narboux.fr
Sun Jun 7 13:58:59 BST 2009
--- Comment #1 from Julien Narboux <Julien narboux fr> 2009-06-07 14:58:58 ---
Created an attachment (id=34345)
A patch to add a slider called "selective saturation" in hsl plugin
This patch adds a slider in hsl tool. The new slider is supposed to add
saturation mostly to pixels whose saturation is low.
This intent is to have something similar to the so called "vibrance" setting in
some other software.
Preserving skin tones can not be done easily without changing deeply the
current implementation of hsl, because the implementation is such that when
changing saturation we do not have access to hue directly.
I did not commit this patch because I am not satisfied with the results. The
algorithm needs a deeper study.
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