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oai:recercat.cat:2117/105642026-02-02T09:07:02Zcom_2072_1033col_2072_452950

Exploitation of the additive component of the polarimetric noise model for speckle filtering Foucher, Samuel Farage, Grégory López Martínez, Carlos Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Radar Synthetic aperture radar PolSAR Radar d'obertura sintètica Ratio filters for speckle noise reduction in SAR imagery are recursive filters where the image structure is iteratively recovered from an initial oversmoothed image. We show that the MBPolSAR filter could be interepreted as a ratio filter applied to the off-diagonal terms of the covariance/coherency matix. From this observation, we propose a new polarimetric ratio filter allowing us to recover the image structure from all the terms of the covariance matrix. In addition, we briefly look at how the additive noise component could also be exploited for the image structure extraction. Filtering results on both simulated and real PolSAR images are shown. Peer Reviewed Postprint (published version) 2010 Conference report Foucher, S.; Farage, G.; López-Martinez, C. Exploitation of the additive component of the polarimetric noise model for speckle filtering. A: IEEE International Geoscience and Remote Sensing Symposium. "2010 IEEE International Geoscience & Remote Sensing Symposium: July 25-30, 2010, Honolulu, Hawaii, U.S.A.: proceedings". Honolulu: 2010, p. 312-315. 978-1-4244-9566-5 https://hdl.handle.net/2117/10564 10.1109/IGARSS.2010.5648901 eng https://ieeexplore.ieee.org/document/5648901 Open Access 4 p. application/pdf