Thanks as always for the excellent help -- I got the images to align by doing as you said: paying more attention to the CPs. align_image_stack was finding bad matches, but I was getting fooled when I was checking the points. Closer inspection revealed that they were bad. I ended up having to make manual points for the 1-63 pair, as well as a few internal pairs (1-21, 21-42, 42-63). I then optimized the 1-21-42-63 set (with Positions/Barrel/View, as Bruno suggested), then I did a custom optimization with 1-21-42-63 fixed, and the result wasn't perfect, but it was close enough to get the job done.
It's good to know about the ability to optimize/align subsets of images, thanks for that! -c On Tuesday, July 24, 2018 at 9:56:43 AM UTC-7, T. Modes wrote: > > > > Am Montag, 23. Juli 2018 22:31:25 UTC+2 schrieb clepsydrae: >> >> Maybe it is sufficient to connect all images sequentially and then run >> align_image_stack only on the first and last image to connect them. >>> >>> (align_image_stack can only cope with a limited amount of movement. It >>> this is too big between first and last image you can do it e.g. to link >>> only every tenth image - connect images 0, 10, 20, 30, 40, 50 and 60) >>> >> >> Thanks -- I tried that (1-63 as well as connecting 1-7, 7-14, 14-21, etc, >> plus 2-62) -- it might have helped a little bit, but didn't really make a >> difference. The statistical pull of each immediate image connection seems >> too strong. >> > Have you checked the cp between the first and the last image? Are the ok? > Or have the many stars fouled align_image_stack and it has selected a > neighbor star? How big is the error between the first and the last? > Maybe optimize first only the first and the last image. Then leave them > fixed and optimize the other images. > > >> (I used the Fast Preview window to add these control points -- I assume >> that was your meaning.) >> > No, I meant to select only a subset of the images in the images tab and > run then align_image_stack on the subset. > > -- 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 hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/44232960-d797-46e5-b348-09dbcbc8b43d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
