On Sep 16, 10:38 pm, Jan Martin <janmar...@diy-streetview.org> wrote: > Do I need to change hugin preferences anyhow? > If so how?
If your fisheye is straight up, the parts of the fisheye shot which could match the 8 images around is quite distorted. The control point generator (CPG) might not be able to find the matches. The matching becomes even more difficult if the images around are made with a different lens. You can sometimes still succeed by increasing the image size the CPG is made to look at, by adding a --maxdim argument to the command line for the CPG (go to settings - control point generators; autopano-sift-c will tell you what parameters it accepts if you call it without any) and try a number larger than your image's largest dimension. In my experience though, autopano-sift-c isn't necessarily the best CPG to use to match images with very dissimilar optical properties. As a second measure, try using alternative CPGs. I find that autopano often finds control points where the others don't. I often start out with panomatic, since that is quite fast, and then use autopano and/or autopano-sift-c if I dont have a convincing result from panomatic alone. Also, if you can repeat the take, try tilting the fisheye shot so it has parts matching your images around which aren't so distorted to help the CPGs. It's usually also a good idea to take the shot so that the part of the ground that (by tilting it) is less distorted, contains a part of the scene which is likely to succeed with the CPGs, so avoid very dark, very bright, low contrast and repetitive patterns. Finally, if all else fails, the control point editor allows you to quite easily create control points manually. You don't need that many to get a decent result, I'd say a good half dozen should be enough. Don't forget to tell hugin the zenith shot is fisheye (in case it hasn't found that from the EXIF data). -- You received this message because you are subscribed to the Google Groups "Hugin and other free panoramic software" group. A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ To post to this group, send email to hugin-ptx@googlegroups.com To unsubscribe from this group, send email to hugin-ptx+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/hugin-ptx
