On Thu, Dec 27, 2012 at 6:19 AM, Pascal Obry <[email protected]> wrote: > > I have tested the new denoise module a bit more deeply today. I feel > that there is something wrong with it. > > To me the denoise module does too much smoothing of the image and we are > loosing lot of details.
it's optimizing peak signal to noise ratio, not subjective detail. i like noise, so i think especially for still images, a little noise contributes to the perceived detail in the image. > I'm wondering if this is not because it applies > on the chromatic and on the luminance noises. The former is probably ok, > but the later is often the cause of details loosing. > > In fact I'm able to get far better (read here something that is close to > what LR4 does) results with the equalizer using only the chroma curve. > > Would it be possible for the denoise module to do something similar? not really, it reverses the physical noise on the three sensors (which are camera linear rgb, not Lab). it's probably possible to do some luma/chroma blending after denoising with some custom color space conversion in the module. j. ------------------------------------------------------------------------------ Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript, jQuery and much more. Keep your Java skills current with LearnJavaNow - 200+ hours of step-by-step video tutorials by Java experts. SALE $49.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122612 _______________________________________________ darktable-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-devel
