Article Dans Une Revue Inverse Problems Année : 2016

Introducing shape constraints into object-based traveltime tomography

Résumé

Traveltime tomography is a diffcult, ill-posed reconstruction problem due to the nonlinearity of the forward model and the limited number of measurements usually available. In such an adverse situation, pixel-based regularization methods are generally unable to provide satisfactory reconstructions. In this paper we propose a novel object-based reconstruction method that introduces prior information about the shape of the structures to be reconstructed, which yields high quality geoacoustic inversion. The proposed method approaches the forward model by a series of linear problems, leading to a sequence of minimizations during which the shape prior isintroduced. The method is demonstrated on synthetic and real data, collected on a specic bench dedicated to non-destructive testing of civil engineering structures.

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hal-02177235 , version 1 (05-02-2025)

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Gil Gaullier, Pierre Charbonnier, Fabrice Heitz, Philippe Côte. Introducing shape constraints into object-based traveltime tomography. Inverse Problems, 2016, 32 (9), pp.095002. ⟨10.1088/0266-5611/32/9/095002⟩. ⟨hal-02177235⟩
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