I have used very often the contrast mask method to improve the resolution of dark and bright areas in my pictures. I'am very satisfied with this method - with one exception:
Between areas with high luminescence differences there are very ugly halos (see attached example file). As far as I can analyse it, the reason is the behavior of the Gaussian Blur Filter, which is the essential tool for this technique. This filter delivers in the center of dark or bright areas an equally distributed mask surface. But near to borders to inverse areas the filter produces gradients which are causing the halos.
Is there an alternative filter or technique, to blur dark and bright areas homogenous all over their range?
Regards
Joachim
Between areas with high luminescence differences there are very ugly halos (see attached example file). As far as I can analyse it, the reason is the behavior of the Gaussian Blur Filter, which is the essential tool for this technique. This filter delivers in the center of dark or bright areas an equally distributed mask surface. But near to borders to inverse areas the filter produces gradients which are causing the halos.
Is there an alternative filter or technique, to blur dark and bright areas homogenous all over their range?
Regards
Joachim