Chapter

Computer Vision and Computer Graphics. Theory and Applications

Volume 24 of the series Communications in Computer and Information Science pp 123-134

Image Filtering Based on Locally Estimated Geodesic Functions

  • Jacopo GrazziniAffiliated withSpatial Data Infrastructures Unit, Institute for Environment and Sustainability, Joint Research Centre - European Commission
  • , Pierre SoilleAffiliated withSpatial Data Infrastructures Unit, Institute for Environment and Sustainability, Joint Research Centre - European Commission

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Abstract

This paper addresses the problem of edge-preserving smoothing of natural images. A novel adaptive approach as a preprocessing stage in feature extraction and/or image segmentation. It performs a weighted convolution by combining both spatial and tonal information in a single similarity measure based on the local calculation of geodesic time functions. Two different strategies are derived for smoothing heterogeneous areas while preserving relevant structures.