I have this exact same speckles problem in Arch Linux. It seems to be worse as images scale up in size. And as you've pointed out, sections of photo that are close to black exhibit the worst of it. It's possible these speckles span into the lighter sections of a photo too but get masked? I've noticed that most panos I stitch have a flat appearance and am curious if your OP discovery is finally the reason why. I had asked the same question around on reddit <https://www.reddit.com/r/postprocessing/comments/6nmmbj/panoramas_are_difficult_to_edit/?st=j5vcn4ac&sh=d165fb9f>but made little progress there.
On Wednesday, August 2, 2017 at 11:14:12 AM UTC-7, dkloi wrote: > > Not sure whether this particular bug has been fixed, but I have had a > problem with coloured speckled pixels in dark areas of the blended output > (the speckled pixels weren't present in the remapped input images). An > example is attached. This disappears when using the --no-ciecam option. > This is with the enblend included in the 64bit Windows version of 2017.0.0. > > On Wednesday, 2 August 2017 18:50:34 UTC+1, mh00h wrote: >> >> Does this problem persist in enblend 4.2? >> >> On Tuesday, October 8, 2013 at 2:39:40 PM UTC-7, dex Otaku wrote: >>> >>> Further info in case it may be of use: >>> >>> I'm shooting raw with a Sony alpha 55 and a sigma 10-20mm @10mm for >>> panos. >>> >>> The camera is set to use the AdobeRGB profile. I usually use Lightroom >>> [4.x] to make 16-bit TIFFs of the images with some basic exposure >>> processing. Sometimes I use RawTherapee instead [it has finer control over >>> noise reduction]. My displays are profiled using Dispcalgui/Argyll CMS >>> [under Windows, yes]. >>> >>> Previews using the 16bpc TIFFs display as expected, but no renders >>> expose correctly, regardless of image content. >>> >>> Using enblend with --no-ciecam gives "expected" results. Without it, >>> images are always as described by the OP. >>> >>> Using the sRGB profile instead of AdobeRGB from the camera makes no >>> difference. Rendering my intermediates as sRGB [converting colour spaces >>> before Hugin] also makes no difference. >>> >> -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/d68691e9-3286-4940-b5dd-41284bec2800%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
