Robust Optimal Pose Estimation

  • Authors:
  • Olof Enqvist;Fredrik Kahl

  • Affiliations:
  • Lund University, Lund, Sweden 22100;Lund University, Lund, Sweden 22100

  • Venue:
  • ECCV '08 Proceedings of the 10th European Conference on Computer Vision: Part I
  • Year:
  • 2008

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Abstract

We study the problem of estimating the position and orientationof a calibrated camera from an image of a known scene. A commonproblem in camera pose estimation is the existence of falsecorrespondences between image features and modeled 3D points.Existing techniques such as RANSAC to handle outliers have noguarantee of optimality. In contrast, we work with a naturalextension of the L∞ norm to the outlier case. Usinga simple result from classical geometry, we derive necessaryconditions for L∞ optimality and show how to usethem in a branch and bound setting to find the optimum and todetect outliers. The algorithm has been evaluated on synthetic aswell as real data showing good empirical performance. In addition,for cases with no outliers, we demonstrate shorter execution timesthan existing optimal algorithms.