Pseudo-time marching schemes for inverse problems in structural health assessment and medical imaging
Data(s) |
25/10/2009
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Resumo |
We propose a self-regularized pseudo-time marching strategy for ill-posed, nonlinear inverse problems involving recovery of system parameters given partial and noisy measurements of system response. While various regularized Newton methods are popularly employed to solve these problems, resulting solutions are known to sensitively depend upon the noise intensity in the data and on regularization parameters, an optimal choice for which remains a tricky issue. Through limited numerical experiments on a couple of parameter re-construction problems, one involving the identification of a truss bridge and the other related to imaging soft-tissue organs for early detection of cancer, we demonstrate the superior features of the pseudo-time marching schemes. |
Formato |
application/pdf |
Identificador |
http://eprints.iisc.ernet.in/25026/1/20.pdf Varma, HM and Banerjee, B and Nandakumaran, AK and Vasu, RM and Roy, D (2009) Pseudo-time marching schemes for inverse problems in structural health assessment and medical imaging. In: Current science, 97 (8). pp. 1220-1226. |
Publicador |
Indian Academy of Sciences |
Relação |
http://www.ias.ac.in/currsci/oct252009/contents.htm http://eprints.iisc.ernet.in/25026/ |
Palavras-Chave | #Instrumentation and Applied Physics (Formally ISU) #Civil Engineering #Mathematics |
Tipo |
Journal Article PeerReviewed |