On Thu, Apr 18, 2019, at 14:16, Heiko Bauke wrote:
> I think, however, deconvolution might also be used as a---let's
> say---artistic tool to counteract all the interpolation and averaging
> effects that happen along the pixel pipe (demosaic, lens correction, etc.).
In that case, maybe immed
On Thu, Apr 18, 2019, at 13:00, Aurélien Pierre wrote:
> The sharpening module happens too late in the pipe (after tone curves)
> and works in Lab, which is nonsensical (Lab == perceptual model built
> upon human vision : that means nothing in optics). I would squeeze it
> right after the denoi
Dear Aurélien
Am 18.04.19 um 21:59 schrieb Aurélien Pierre:
please don't do a deconvolution in the Lab color model. Natural blur is
a phenomenon happening to photons and described by a convolution
product. If you want to revert it, you need to use a physically
meaningful color space, e.g. a li
Dear Pascal,
Am 17.04.19 um 23:46 schrieb Pascal Obry:
Let's go with that if we are sure the algo are equivalent. Code
duplication is not good in the long run.
the two implementations of the Gaussian filter work rather differently.
Both are certainly not equivalent to each other in a mathemat
Hi,
please don't do a deconvolution in the Lab color model. Natural blur is
a phenomenon happening to photons and described by a convolution
product. If you want to revert it, you need to use a physically
meaningful color space, e.g. a linear one as close as possible to the
spectral space.
That w
Hi,
suggestion: add more options for the blur. In the following video
"Matter machen/surface blur" is used for "perfect sharpening".
https://www.youtube.com/watch?v=70eCvD4_aaE
Chris
Am 17.04.2019 um 20:16 schrieb Heiko Bauke:
I just started to implement a simple (non-blind) deconvolution fi
Hello Heiko,
> Looking at the code of the current unsharp mask method I realized that
> the module uses its own implementation of a gaussian blur filter. Is
> there any reason not to employ the one in src/common/gaussian.[ch]? Are
> there any concerns against simplifying the sharpening modu
