This is really cool Heiko! Thanks for your efforts in this direction.
-Jason On 2017-03-23 09:55 AM, Heiko Bauke wrote:
Hi, in Darktable masks can be blurred by a Gaussian filter. I have implemented an experimental feature to modify parametric and drawn masks by another kind of filter called guided filter. Such a guided filter blurs the mask but also takes into account the structure of the image. It is guided by the image. When a drawn or parametric mask is filtered by the guided filter it tends to have edges where also the image has edges. The guided filter is similar to a bilateral filter but is less prone to cause halo effects at edges. The effect of the guided filter is also illustrated in the attached figures. The theory behind this filter is described in http://kaiminghe.com/publications/eccv10guidedfilter.pdf http://kaiminghe.com/eccv10/index.html If you want to play with this new feature checkout the guided_filter branch in my darktable repository on github. Feedback will be welcome. https://github.com/rabauke/darktable Warning: Make sure that the modified version of darktable does not overwrite your working data base, e.g. use the --configdir option. Otherwise you may experience problems when going back to Darktable 2.2.3. Heiko
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