traditionally black patches are either out of memory (very large patches) or NaN pixels caused by something and then propagated further, e.g. throughout the wavelet support in the equalizer.
so i guess there are two possibilities: dithering causes the NaN, or it propagates it to the full patch.. -jo On Sun, Jan 6, 2013 at 5:53 AM, Pascal Obry <[email protected]> wrote: > > In a set of picture I have some of them with big (sometime 80% of the > picture is covered) black (fully black) patch. These patches are also on > the exported images. I have bisected the issue to: > >> commit d41531d53f9045e31c8a2c713b0f1363c47cb5de >> Author: Ulrich Pegelow <[email protected]> >> Date: Thu Jan 3 18:06:16 2013 +0100 >> >> dithering: automatic dithering according to output format with module >> being auto-applied >> > > And indeed when I deselect the dither iop the black patch goes away. I > have no picture that reproduce this that I can share at the moment. I'll > keep an eye on this and will contribute a reproducer when I can. Or > maybe someone knows pretty well this module and can have a look? I'm > ready to do some testing... > > -- > Pascal Obry / Magny Les Hameaux (78) > > The best way to travel is by means of imagination > > http://v2p.fr.eu.org > http://www.obry.net > > gpg --keyserver keys.gnupg.net --recv-key F949BD3B > > ------------------------------------------------------------------------------ > Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, > MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current > with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft > MVPs and experts. SALE $99.99 this month only -- learn more at: > http://p.sf.net/sfu/learnmore_122912 > _______________________________________________ > darktable-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/darktable-devel ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. SALE $99.99 this month only -- learn more at: http://p.sf.net/sfu/learnmore_122912 _______________________________________________ darktable-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/darktable-devel
