The problem with matching hundreds of photos sequentially is that the view drifts over time, so if you want perfectly stable output you need to keep referring back to an anchor.
align_image_stack has the same interface as cpfind, but only works where the images are nearly aligned already, this is not a issue with webcam footage that is already closely aligned. The main difference here is that cpfind characterises and compares features, which works best when the photos were all taken at the same time, since this characterisation is very sensitive to changes in lighting conditions. align_image_stack just compares the pixel data for any feature that looks like a 'corner' and shuffles the alignment to find the least-worst match, this is much more robust when comparing photos taken over a period of weeks or between night and day. Perl is pretty similar to python if you ignore all the ::->~= stuff. -- Bruno On 18 May 2021 04:48:09 BST, jasper mackenzie wrote: >Thanks @Bruno, > It looks like your script aligns each image to the anchor rather than >sequentially, so... damn, I may have to go with my clunky approach. >I guess most of the magic is done for you with 'align_image_stack'. >Perl scares me TBH, so not sure if I will be able to extend 'nona-deshake' >for my use case 8( > >So many of the original questions remain unfortunately 8( > >Ideas? > >On Sunday, 16 May 2021 at 19:58:45 UTC+12 bruno wrote: > >> There is a tool in the Panotools::Script Perl module called >`nona-deshake` >> that does most of this, see this thread: >> https://groups.google.com/g/hugin-ptx/c/yFE6VF-mtGk/m/CCErzyeGDwAJ >> >> You basically create a Hugin project with a single photo, straighten, >> crop, change projection, whatever. Then this is used as an anchor to align >> all the other photos in the sequence. >> >> I planned on extending it to support multiple photos in this anchor >> project (so you could represent all different lighting conditions) but this >> hasn't happened yet. >> >> There has been at least one attempt to create a python equivalent of >> Panotools::Script, I don't have any links :( -- 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/1A215370-D83D-48C4-8541-2DE7ADB4BD62%40postle.net.
