Title :
A Bayesian approach based on modified Markov random fields for microwave tomography
Author :
Ferraiuolo, G. ; Pascazio, V.
Author_Institution :
Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Univ. di Napoli, Italy
Abstract :
The application of a Markov random field (MRF) based maximum a posteriori (MAP) estimation method for microwave imaging, in a non-linear framework, is presented. The adopted MRF family is characterized by a quadratic energy function, and is "modified" such that it statistically represents complex profiles. This approach simultaneously allows, in many cases, well posedness and robustness against local minima occurrence.
Keywords :
Bayes methods; Markov processes; microwave imaging; tomography; Bayesian approach; MAP method; complex profiles; local minima occurrence; maximum a posteriori estimation method; microwave tomography; modified Markov random fields; nonlinear microwave imaging; posedness; quadratic energy function; robustness; tomographic imaging; Bayesian methods; Dielectric measurements; Least squares approximation; Markov random fields; Maximum likelihood estimation; Microwave imaging; Microwave theory and techniques; Permittivity measurement; Scattering; Tomography;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2002. IGARSS '02. 2002 IEEE International
Print_ISBN :
0-7803-7536-X
DOI :
10.1109/IGARSS.2002.1027193
