Intelligent pixels of interest selection with application to facial expression recognition using multilayer perceptron

  • Authors:
  • Taner Danisman;Ioan Marius Bilasco;Jean Martinet;Chabane Djeraba

  • Affiliations:
  • Lille University of Science and Technology, CNRS UMR 8022, Parc Scientifique de la Haute Borne, 50 Avenue Halley, 59655 Villeneuve D'Ascq, France;Lille University of Science and Technology, CNRS UMR 8022, Parc Scientifique de la Haute Borne, 50 Avenue Halley, 59655 Villeneuve D'Ascq, France;Lille University of Science and Technology, CNRS UMR 8022, Parc Scientifique de la Haute Borne, 50 Avenue Halley, 59655 Villeneuve D'Ascq, France;Lille University of Science and Technology, CNRS UMR 8022, Parc Scientifique de la Haute Borne, 50 Avenue Halley, 59655 Villeneuve D'Ascq, France

  • Venue:
  • Signal Processing
  • Year:
  • 2013

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Abstract

This paper presents an automatic way to discover pixels in a face image that improves the facial expression recognition results. Main contribution of our study is to provide a practical method to improve classification performance of classifiers by selecting best pixels of interest. Our method exhaustively searches for the best and worst feature window position from a set of face images among all possible combinations using MLP. Then, it creates a non-rectangular emotion mask for feature selection in supervised facial expression recognition problem. It eliminates irrelevant data and improves the classification performance using backward feature elimination. Experimental studies on GENKI, JAFFE and FERET databases showed that the proposed system improves the classification results by selecting the best pixels of interest.