Better correspondence by registration

  • Authors:
  • Shufei Fan;Rupert Brooks;Frank P. Ferrie

  • Affiliations:
  • Center for Intelligent Machines, McGill University, Montreal, Canada;National Research Council Canada, Industrial Materials Institute, Montreal, Canada;Center for Intelligent Machines, McGill University, Montreal, Canada

  • Venue:
  • ACCV'09 Proceedings of the 9th Asian conference on Computer Vision - Volume Part III
  • Year:
  • 2009

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Abstract

Accurate image correspondence is crucial for estimating multiple-view geometry In this paper, we present a registration-based method for improving accuracy of the image correspondences We apply the method to fundamental matrix estimation under practical situations where there are both erroneous matches (outliers) and small feature location errors Our registration-based method can correct feature locational error to less than 0.1 pixel, remedying localization inaccuracy due to feature detectors Moreover, we carefully examine feature similarity based on their post-alignment appearance, providing a more reasonable prior for subsequent outlier detection Experiments show that we can improve feature localization accuracy of the MSER feature detector, which recovers the most accurate feature localization as reported in a recent study by Haja and others As a result of applying our method, we recover the fundamental matrix with better accuracy and more efficiency.