On the impact of anisotropic diffusion on edge detection

  • Authors:
  • C. Lopez-Molina;M. Galar;H. Bustince;B. De Baets

  • Affiliations:
  • -;-;-;-

  • Venue:
  • Pattern Recognition
  • Year:
  • 2014

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Abstract

Content-aware, edge-preserving smoothing techniques have gained visibility in recent years. However, they have had a rather limited impact on the edge detection literature compared to content-unaware (linear) techniques, often based on Gaussian filters. In this work, we focus on Anisotropic Diffusion, covering its initial definition by Perona and Malik and subsequent extensions. A visual case study is used to illustrate their features. We perform a quantitative evaluation of the performance of the Canny method for edge detection when substituting linear Gaussian smoothing filters by Anisotropic Diffusion.