Estimation and segmentation in non-Gaussian POLSAR clutter by SIRV stochastic processes

Gabriel Vasile 1 Jean-Philippe Ovarlez 2 Frédéric Pascal 3
1 GIPSA-SIGMAPHY - SIGMAPHY
GIPSA-DIS - Département Images et Signal
2 ONERA - The French Aerospace Lab [Toulouse]
3 SONDRA - Sondra, CentraleSupélec, Université Paris-Saclay
Abstract : In the context of non-Gaussian polarimetric clutter models, this paper presents an application of the recent advances in the field of Spherically Invariant Random Vectors (SIRV) modelling for coherency matrix estimation in heterogeneous clutter. The complete description of the POLSAR data set is achieved by estimating the span and the normalized coherency independently. The normalized coherency describes the polarimetric diversity, while the span indicates the total received power. Based on the SIRV model, a new maximum likelihood distance measure is introduced for unsupervised POLSAR segmentation. The proposed method is tested with airborne POLSAR images provided by the RAMSES system.
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Conference papers
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https://hal-supelec.archives-ouvertes.fr/hal-00446355
Contributor : Anne-Hélène Picot <>
Submitted on : Tuesday, January 12, 2010 - 3:31:50 PM
Last modification on : Friday, June 21, 2019 - 11:18:21 AM

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CNRS | ONERA | SUPELEC | GIPSA-DIS | GIPSA-SIGMAPHY | GIPSA | UGA | UGA-TEST-TER | SUP_SONDRA

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Gabriel Vasile, Jean-Philippe Ovarlez, Frédéric Pascal. Estimation and segmentation in non-Gaussian POLSAR clutter by SIRV stochastic processes. IEEE International Geoscience And Remote Sensing Symposium 2009 (IGARSS 2009), Jul 2009, Le Cap, South Africa. ⟨10.1109/IGARSS.2009.5417935⟩. ⟨hal-00446355⟩

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