Hallöchen! I own a nearly-stereographic fisheye (Samyang 8mm). I calculated its distortion parameters a, b, c with Hugin. If I map the photos to rectilinear, everything is fine.
Now I did some experiments by generating photos of a checkerboard with a computer program, taken with a stereographic lens with the above a, b, c distortion parameters. To my suprise, they are properly corrected in Hugin only if I apply distortion *before* I switch to the stereographic projection. This means that the anti-distortion polynomial does not apply to the original sensor image but the remapped one. This also means that if I want to have a *perfect* stereographic picture, Hugin needs to map to rectilinear, apply a, b, c, and map back to stereographic. This would be rather wasteful. Can anybody confirm or dispute this? Thank you! Bye, Torsten. -- Torsten Bronger Jabber ID: [email protected] or http://bronger-jmp.appspot.com -- 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/87zjoomv06.fsf%40physik.rwth-aachen.de. For more options, visit https://groups.google.com/groups/opt_out.
