On Mon, Feb 15, 2010 at 11:37 AM, Pascal de Bruijn <pmjdebru...@pcode.nl> wrote: > Indeed. Another problem is: what does the user actually want... > > 1. Real sharpening > 2. Enhance visual acutance > http://en.wikipedia.org/wiki/Acutance > 3. Local contrast enhancement (very usefull for black & white) > > Refocus does 1, Unsharp mask does 2 and 3. I guess most people > actually want 2 and/or 3.
I use UFraw as an alternative to Adobe Camera Raw and my camera's provided software. I think this is probably true for most users of UFraw. So keeping that in mind, a sharpening feature that gives results similar to those types of applications would provide users with "expected" results. I'm not sure what sharpening technique those software packages use. Also, many cameras include a "Sharpness" setting for the JPG/TIF output. For example, my Pentax K-7 offers 2 options for in-camera sharpening: a "Sharpness" slider that goes from -4 to +4, and a "Fine Sharpness/Fine Sharpness 2" setting which can be enabled independently from the slider. Again, I'm not sure what sharpening methods are used by the camera's firmware, and I'm not familiar with other camera brands and models, but it would probably be best to try and match the results that users expect from their own cameras if possible. Often, the camera's results tend to match the included software's results too. > Again, preferably we'd like to offer the user a million different > sharpening techniques... But I'm guessing most folks want the unsharp > mask for it's versatility. I stopped using unsharp a while back because of the annoying white outline that can develop when applying higher levels of unsharp. I've been pleasantly surprised by the "Smartsharp/Smart Sharpen" types of masks, which I think incorporate unsharping as a part of their method. It's a filter available by default in Photoshop CS2 (called Smart Sharpen), and there's a similar plugin available for Gimp (called, Smartsharp). -- Frank Gore Project Manager www.projectpontiac.com ------------------------------------------------------------------------------ SOLARIS 10 is the OS for Data Centers - provides features such as DTrace, Predictive Self Healing and Award Winning ZFS. Get Solaris 10 NOW http://p.sf.net/sfu/solaris-dev2dev _______________________________________________ ufraw-devel mailing list ufraw-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ufraw-devel
