Masks are recognised by both Enblend and Enfuse, so if you don't apply your mask to all layers in a stack Enfuse may well produce a set of intermediate images which are difficult to Enblend (and vice versa). Enfuse doesn't really recognise "the properly exposed" layer of a stack the way you and I do; it takes (by default) a whole bunch of subtle parameters into account when choosing which pixel values to use in the fused output. By including only one layer, you are forcing Enfuse to find a solution for this stack which might be quite different from the solution it finds for the adjacent stacks (where all 7 layers are included) - you are in fact hindering rather than helping Enfuse to do its thing.
When the rendering process fails before completing the task, the log file *should* be automatically saved (as output_prefix.txt) in the project directory. If - for some reason - you don't keep your input, intermediate, output and PTO files in the same directory ... try looking in whatever you specified as output directory first, then try the temp directory, then the input directory. If the process terminates prematurely without saving the log file, I would say you've definitely found a bug. To hide all traces of your tripod, using one *include* mask on the nadir stack is much less laborious than making a dozen *exclude* masks :-) I'm very disappointed to hear that the zenith stack include mask didn't work ... in theory this should be an extremely elegant workaround for Enblend's inability to read across the poles :-( best, John On Apr 3, 10:58 pm, Calvin McDonald <c...@ckmcdonald.com> wrote: > On Saturday, March 31, 2012 6:15:46 AM UTC-6, zarl wrote: > > > Hi Calvin, > > > Calvin McDonald schrieb am 30.03.12 21:32: > > > Just wanted to ask the group if the Hugin behavior I'm seeing is > > > expected and if not, get some feedback on workarounds for the problems > > > I'm having. > > > > Here's the configuration: 3x12+1N+1Z - all but the nadir are stacks of 7 > > > exposure bracketed shots (total 260 images). Each stack of 7 is position > > > Linked. There is just one nadir shot - which is properly exposed. The > > > CP's are inserted only between the middle image of the 7 in each stack. > > > The exposure fusing is working nicely in general and I'm getting a > > > really good stitch alignment-wise, but, I'm having unusual problems with > > > the nadir and zenith. > > > > ZENITH: > > > Below is a pic of the zenith. I've never seen this before. Why is Hugin > > > doing this and what can I do to fix it? > > > This is an enblend problem, the panotools wiki has a tutorial that deals > > with it: > > >http://wiki.panotools.org/How_to_remove_blending_error_caused_by_enbl... > > > Another option could be to force hugin to use the "sky" parts of your > > zenith shot with an "include" mask. And since you're using stacks you > > should define the mask to include every other image in the same stack > > (there's a drop down list for that in the mask tab). > > It seems non-intuitive to me to set an include mask on all images in the > stack to solve the problem. It would seem that setting an include mask on > the one stack image with the properly exposed sky would be right. However, > I tried both ways (mask on 1 image, mask on all 7 in the stack) and neither > worked. Both produced the same bad result as pictured in my first post. > > I'll go read up on and try the panotools method.... > > > > NADIR: > > > Several of the 12 groups of 7 images of the bottom row include the feet > > > of my tripod. This is very typical for me and I've never had Hugin not > > > remove them for me with no intervention when including and blending in > > > the nadir. This is the first time I've done exposure stacks on the > > > bottom row. For some reason Hugin is leaving in the tripod feet. I've > > > included an image of this below. > > > > So I went in and masked them out. But this makes Hugin crash. > > > Can you reproduce that crash and is there an error message? Consider > > filing a bug report together with a detailed description of what leads > > to that crash. > > I didn't try to reproduce it. With a 4 hour build time I'm not very > motivated to run a lot of experiments. There was no gui error message, > Hugin just terminate. The tools might have left a log file around but I > don't know them well enough to know what to look for. > > I do know that changing from 3-4 masks in each stack (on individual images) > to a single mask on all 7 images in the stack made the crash go away. > > > > > > > > > > > > I note that when cropping, Hugin will allow multiple images to be > > > cropped at once, but when masking, it will only allow one image > > > selection at a time. When I masked the tripod feet out I had to do it > > > one image at a time. To save time I only masked the images with > > > exposures close to correct. So of the group of 7, I only masked 3 from > > > each of the 12 sets. Hugin crashes when I do this. It crashes when doing > > > the build. > > > First of all there are two different types of cropping: you can crop > > input images (individually or with the same coordinates if you use the > > "load lens parameters" button in the "camera and lens" tab), but you can > > also crop the output image (See the "fast preview" window's "crop" tab). > > All images that use the same stack (manually: in "images" tab select all > > images of one stack and click "new stack", repeat this for all other > > stacks) you can now set a mask to include (or exclude) taht area in > > every image of the same stack. > > > Hugin (2011.2 and later) also lets you copy/paste masks. Before you had > > to save/load a mask for a similar workflow. > > > There's another option: tiffs (instead of e.g. jpgs as input image file > > format) can include masks directly in the files (as alpha masks). > > > > If I have the stacked images Linked, does the mask affect all 7 images, > > > or just the one's masked? Could this be what's causing Hugin to crash? > > > Do I need to mask all 7? Just one? Is there a way to select all 7 and > > > apply a mask to all 7 at once? > > > Mask behaviour is defined in the "mask" tab, see above. > > > It should make no difference how you use masks. Both ways make sense: > > when you stack different exposures from the same raw file you'd usually > > use the same mask for every image in that stack. When you combine > > bracketed shots there might be e.g. a camera strap or a bird in > > different positions in each frame, so you'd use individual masks (or > > none if the bird doesn't appear in a peculiar frames). > > When I converted to 1 mask per stack on the tripod feet - that fixed the > problem nicely. > > > Does that help? > > Yes, and thanks for taking the time to help me. > > Calvin -- You received this message because you are subscribed to the Google Groups "Hugin and other free panoramic software" group. 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