Projective 3-Point Algorithm using Grunert's Method (Cyrill Stachniss)

Projective 3-Point Algorithm, also called Spatial Resectioning, using Grunert's Method of 1841
Slides: www.ipb.uni-bon...
Cyrill Stachniss, Spring 2020

[@hongkyulee9724]

Thank you Prof. Cyrill! This video really helps for me to understand what P3P algorithm is.

[@aliahmad8940]

best explanation I've found on internet

[@gdmsave]

Thank you!

[@jusgru4121]

Hello Mr. Stachniss, very good video and comprehensible explanation! One question on solving for u in minute 23:20. I get a quadratic equation when solving for u therefore 2 solutions. When inserting these solutions into the last equation of the system of equations I would have to do a differentiation of cases?! Thereby obtaining 2 fourth-degree polynomials?

[@ubertian1949]

Hello Professor Cyrill! Wonderful lecture, and I learned a a lot! But I have a problem... At 30:24, when the point X1 is lifted upwards, how can the distance between X1 and X2 stays c? It is the same problem with other two situations. Thank you so much!

[@unambiguousoxymoron4552]

For anyone confused at 34:51, see Least-Squares Rigid Motion Using SVD igl.ethz.ch/projects/ARAP/svd_rot.pdf

[@CyrillStachniss]

Thanks for the link. There is also a video for the Absolute Orientation Problem, including a full derivation here: ruclips.net/video/K5WG40gMlz8/видео.html

[@barath_]

Can this technique be used for camera lidar calibration?!

[@victorsheverdin3935]

Thank u!!!