Generalized projection based M-estimator: Theory and applications

  • Authors:
  • S. Mittal;S. Anand;P. Meer

  • Affiliations:
  • ECE Dept., Rutgers Univ., Piscataway, NJ, USA;ECE Dept., Rutgers Univ., Piscataway, NJ, USA;ECE Dept., Rutgers Univ., Piscataway, NJ, USA

  • Venue:
  • CVPR '11 Proceedings of the 2011 IEEE Conference on Computer Vision and Pattern Recognition
  • Year:
  • 2011

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Abstract

We introduce a robust estimator called generalized projection based M-estimator (gpbM) which does not require the user to specify any scale parameters. For multiple inlier structures, with different noise covariances, the estimator iteratively determines one inlier structure at a time. Unlike pbM, where the scale of the inlier noise is estimated simultaneously with the model parameters, gpbM has three distinct stages-scale estimation, robust model estimation and inlier/outlier dichotomy. We evaluate our performance on challenging synthetic data, face image clustering upto ten different faces from Yale Face Database B and multi-body projective motion segmentation problem on Hopkins155 dataset. Results of state-of-the-art methods are presented for comparison.