On Fri, Nov 05, 2010 at 09:59:40PM -0600, Michael Torrie wrote: > After learning a few tips at the excellent UUG meeting on thursday, I > thought many of you might be interested in this tip on sharpening > pictures with less noise. If you decompose the picture into the HSV > layers as he described last night, if you click on the "value" layer, > you can run a sharpen or unsharpen mask operation on this layer only, > without affecting the colors or saturation. This will sharpen your > image with much less noise than you would get sharpening the usual way. > Just recompose the image as we did last night. You can do this > operation as well as fixing the saturation curve before recompositing.
Interesting. I'll have to try this. I also read somewhere that HSV has a better model for saturation, while HSL has a better model for lightness. I wonder how sharpening on the lightness layer in HSL might compare with sharpening on the value layer in HSV. There's lots to try. -- Andrew McNabb http://www.mcnabbs.org/andrew/ PGP Fingerprint: 8A17 B57C 6879 1863 DE55 8012 AB4D 6098 8826 6868 -------------------- BYU Unix Users Group http://uug.byu.edu/ The opinions expressed in this message are the responsibility of their author. They are not endorsed by BYU, the BYU CS Department or BYU-UUG. ___________________________________________________________________ List Info (unsubscribe here): http://uug.byu.edu/mailman/listinfo/uug-list
