Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/50285
Title: Fast matrix inversion and determinant computation for Polarimetric Synthetic Aperture Radar
Authors: Coelho, D. F.G.
Cintra, R. J.
Frery, A. C. 
Dimitrov, V. S.
UNESCO Clasification: 1203 Ciencia de los ordenadores
Keywords: Determinant
Fast algorithms
Matrix inversion
PolSAR
Issue Date: 2018
Journal: Computers and Geosciences 
Abstract: This paper introduces a fast algorithm for simultaneous inversion and determinant computation of small sized matrices in the context of fully Polarimetric Synthetic Aperture Radar (PolSAR) image processing and analysis. The proposed fast algorithm is based on the computation of the adjoint matrix and the symmetry of the input matrix. The algorithm is implemented in a general purpose graphical processing unit (GPGPU) and compared to the usual approach based on Cholesky factorization. The assessment with simulated observations and data from an actual PolSAR sensor show a speedup factor of about two when compared to the usual Cholesky factorization. Moreover, the expressions provided here can be implemented in any platform.
URI: http://hdl.handle.net/10553/50285
ISSN: 0098-3004
DOI: 10.1016/j.cageo.2018.07.002
Source: Computers & Geosciences [ISSN 0098-3004] , v. 119, p. 109-114
Appears in Collections:Artículos
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