Signature extraction using mutual interdependencies

  • Authors:
  • Heiko Claussen;Justinian Rosca;Robert Damper

  • Affiliations:
  • Siemens Corporation, Corporate Research, 755 College Road East, Princeton, NJ 08540, USA and University of Southampton, School of Electronics and Computer Science, Highfield, Southampton SO17 1BJ, ...;Siemens Corporation, Corporate Research, 755 College Road East, Princeton, NJ 08540, USA;University of Southampton, School of Electronics and Computer Science, Highfield, Southampton SO17 1BJ, UK

  • Venue:
  • Pattern Recognition
  • Year:
  • 2011

Quantified Score

Hi-index 0.01

Visualization

Abstract

Recently, mutual interdependence analysis (MIA) has been successfully used to extract representations, or ''mutual features'', accounting for samples in the class. For example, a mutual feature is a face signature under varying illumination conditions or a speaker signature under varying channel conditions. A mutual feature is a linear regression that is equally correlated with all samples of the input class. Previous work discussed two equivalent definitions of this problem and a generalization of its solution called generalized MIA (GMIA). Moreover, it showed how mutual features can be computed and employed. This paper uses a parametrized version GMIA(@l) to pursue a deeper understanding of what GMIA features really represent. It defines a generative signal model that is used to interpret GMIA(@l) and visualize its difference to MIA, principal and independent component analysis. Finally, we analyze the effect of @l on the feature extraction performance of GMIA(@l) in two standard pattern recognition problems: illumination-independent face recognition and text-independent speaker verification.