Adaptive Anisotropic Morphological Filtering Based on Co-Circularity of Local Orientations
Samy Blusseau, Santiago Velasco-Forero, Jesús Angulo, Isabelle Bloch
published
2022-04-25
reference
Samy Blusseau, Santiago Velasco-Forero, Jesús Angulo, and Isabelle Bloch, Adaptive Anisotropic Morphological Filtering Based on Co-Circularity of Local Orientations, Image Processing On Line, 12 (2022), pp. 111–141. https://doi.org/10.5201/ipol.2022.397

Communicated by Bertrand Kerautret
Demo edited by Bertrand Kerautret

Abstract

The algorithm presented in this paper is an application of a general framework for morphological processing of signals on weighted graphs. Here we apply it to images by defining what we call a co-circularity graph. In this graph, the vertices are the pixels and the weighted edges depend on a consistency criterion (co-circularity) between local orientations estimated from the structure tensors. This graph induces anisotropic adaptive morphological operators which are related both to anisotropic diffusion in images and path optimality in graphs. We present several applications such as the enhancement of fiber-like structures, completion of interrupted edges and the regularization of grayscale images. We also discuss the parameters setting depending on the application.

Download