Title :
A qualitative two-step inversion approach for the reconstruction of subsurface defects
Author :
Donelli, Massimo ; Benedetti, Manuel ; Lesselier, Dominique ; Massa, Andrea
Author_Institution :
Dept. of Inf. Eng. & Comput. Sci., Univ. of Trento, Trento, Italy
Abstract :
In this work, the problem of the localization and shaping of buried objects or voids is addressed considering an innovative two steps strategy in order to enhance the reconstruction accuracy. In particular, at the first step the approach is aimed at firstly estimating the region-of-interest where the defect is supposed to be located. Then at the second step, the qualitative imaging of the object is improved through a level-set based shaping procedure. In order to assess the effectiveness of the proposed approach, selected numerical results concerned with different scenarios and noisy data are presented and discussed.
Keywords :
geophysical image processing; image reconstruction; microwave imaging; nondestructive testing; level-set based shaping procedure; microwave imaging; noisy data; nondestructive evaluation; nondestructive testing; qualitative imaging; qualitative two-step inversion approach; reconstruction accuracy; region-of-interest; stochastic algorithms; subsurface defect reconstruction; Buried object detection; Computer science; Electromagnetic fields; Electromagnetic scattering; Electronic mail; Image reconstruction; Inverse problems; Landmine detection; Microwave imaging; Shape; Level-Set; Microwave Imaging; NDE/NDT; Stochastic Algorithms;
Conference_Titel :
Geoscience and Remote Sensing Symposium,2009 IEEE International,IGARSS 2009
Conference_Location :
Cape Town
Print_ISBN :
978-1-4244-3394-0
Electronic_ISBN :
978-1-4244-3395-7
DOI :
10.1109/IGARSS.2009.5417331
