Bilateral Distance Based Filtering for Polarimetric SAR Data

Remote Sensing

Alberto Alonso-González¹  Carlos López-Martínez²  Philippe Salembier² 

[1] Department of Signal Theory and Communications (TSC), Technical University of Catalonia (UPC), E-08034 Barcelona, Spain;

关键词: SAR polarimetry;    speckle;    filter;   

DOI  :  10.3390/rs5115620

来源: mdpi

【 摘 要 】

This paper introduces a non-linear Polarimetric SAR data filtering approach able to preserve the edges and small details of the data. It is based on exploiting the data locality in both, the spatial and the polarimetric domains, in order to avoid mixing heterogeneous samples of the data. A weighted average is performed over a given window favoring pixel values that are close on both domains. The filtering technique is based on a modified bilateral filtering, which is defined in terms of spatial and polarimetric distances. These distances encapsulate all the knowledge in both domains for an adaptation to the data structure. Finally, the proposed technique is employed to process a real RADARSAT-2 dataset.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland