Enhancing the texture attribute with partial differential equations: a case of study with Gabor filters

  • Authors:
  • Bruno Brandoli Machado;Wesley Nunes Gonçalves;Odemir Martinez Bruno

  • Affiliations:
  • Institute of Mathematical Sciences and Computing;Physics Institute of São Carlos, University of São Paulo, SP - Brazil;Institute of Mathematical Sciences and Computing and Physics Institute of São Carlos, University of São Paulo, SP - Brazil

  • Venue:
  • ACIVS'11 Proceedings of the 13th international conference on Advanced concepts for intelligent vision systems
  • Year:
  • 2011

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Abstract

Texture is an important visual attribute used to discriminate images. Although statistical features have been successful, texture descriptors do not capture the richness of details present in the images. In this paper we propose a novel approach for texture analysis based on partial differential equations (PDE) of Perona and Malik. Basically, an input image f is decomposed into two components f = u + v, where u represents the cartoon component and v represents the textural component. We show how this procedure can be employed to enhance the texture attribute. Based on the enhanced texture information, Gabor filters are applied in order to compose a feature vector. Experiments on two benchmark datasets demonstrate the superior performance of our approach with an improvement of almost 6%. The results strongly suggest that the proposed approach can be successfully combined with different methods of texture analysis.