Thank you Florian; I can see a logic in your statement. However, I still think there is something odd with this. It may be a particular result of working with mosaic stitching in very controlled conditions; the images making up my panoramas are laid out on a regular grid and my control points are often repeated between multiple images.
My "errors" always tend to be the control points towards the edges, those which are only in two images. My best CPs are always those towards the centre of any four images. This is because, I believe, the optimisation prioritises points equally across the panorama/mosaic. However, if one set of points is repeated many times, the model will tend to exaggerate the correctness of those points over the equally important points at the edge. I think your weighting feature in Hugin++ could be very helpful. On Friday, 6 May 2022 at 18:14:44 UTC+1 Florian Königstein wrote: > Since every control point connects only two images, it's normal and > reasonable that you have more CPs in the intersection of 4 images. Every CP > generates constraints on the relative position of two images. > > In Hugin++ you could set weights for control points. However, this should > in most cases only be necessary when you have "good" CPs and "bad" CPs > (e.g. due to moving objects) and you have no other choice but keeping some > of the "bad" CPs. Then you can assign higher weights for good CPs and/or > lower weights for bad CPs. > [email protected] schrieb am Freitag, 29. April 2022 um 14:54:49 UTC+2: > >> Is there not a bias in the way Hugin optimises; that control points at >> the intersection of four images will be weighted three more times than >> those at the intersection of the pair of images above or below? The larger >> error in control points always tend to be the furthest from the centre. >> >> Without manually adding control points away from the 4-way intersection >> (or removing those in the centre), is there some way to compensate for this >> with cpfind or autooptimiser? >> >> (Hoping the attached image posts) >> > -- 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/00f4f2e9-8eb8-46c1-9433-3ee363670591n%40googlegroups.com.
