Carpio Rodríguez, Ana María and Rapún , M.L.
(2008)
*Topological Derivatives for Shape Reconstruction.*
Inverse problems and imaging, 1943
.
pp. 85-133.
ISSN 0075-8434

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## Abstract

Topological derivative methods are used to solve constrained optimization reformulations of inverse scattering problems. The constraints take the form of

Helmholtz or elasticity problems with different boundary conditions at the interface between the surrounding medium and the scatterers. Formulae for the topological derivatives

are found by first computing shape derivatives and then performing suitable asymptotic expansions in domains with vanishing holes. We discuss integral methods for the numerical approximation of the scatterers using topological derivatives and implement a fast iterative procedure to improve the description of their number, size, location and shape.

Item Type: | Article |
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Uncontrolled Keywords: | Inverse obstacle scattering; Boundary inegral-equations; Level set methods; Transmission problems; Helmholtz-equation; Anisotropic elasticity; Sampling method; Tomography; Waves; Optimization |

Subjects: | Sciences > Mathematics > Differential equations |

ID Code: | 14944 |

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Deposited On: | 24 Apr 2012 10:51 |

Last Modified: | 06 Feb 2014 10:12 |

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