Rotation invariant texture characterization using a curvelet based descriptor

  • Authors:
  • F. Gómez;E. Romero

  • Affiliations:
  • CimaLab, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá DC, Colombia and Coma Science Group, Cyclotron Research Center, University of Liège, Liège, Belgium;CimaLab, Faculty of Medicine, Universidad Nacional de Colombia, Bogotá DC, Colombia

  • Venue:
  • Pattern Recognition Letters
  • Year:
  • 2011

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Abstract

This paper introduces a highly discriminative, precise and simple descriptor of natural textures, based on the curvelet transform. The proposed descriptor is calculated from the statistical pattern of the curvelet coefficients. The image is mapped to the curvelet space, where a statistical parametric model approaches the data distribution for each of the sub-bands. Once these parameters are estimated, they are subband-energy sorted out, achieving thereby the invariance to planar rotations. Finally, the Kullback-Leibler divergence between the statistical parameters is used to estimate a distance between images. We demonstrated the effectiveness of the proposed descriptor for classification and retrieval tasks.