PHASELESS DIFFRACTION TOMOGRAPHY WITH REGULARIZED BEAM PROPAGATION

Abstract : In recent years, researchers have obtained impressive reconstructions of the refractive index (RI) of biological objects through the combined use of advanced physics (nonlinear forward model) and regularization. Here, we propose an adaptation of these techniques for the more challenging problem of intensity-only measurements. It involves a difficult nonconvex optimization problem where phase and distribution of the RI must be jointly estimated. Using an adequate splitting, we leverage recent achievements in phase retrieval and RI reconstruction to perform this task. This yields an efficient reconstruction method with sparsity constraints.
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Communication dans un congrès
IEEE International Symposium on Biomedical Imaging (ISBI), 2018, Washington, United States
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https://hal.archives-ouvertes.fr/hal-01978525
Contributeur : Ferréol Soulez <>
Soumis le : vendredi 11 janvier 2019 - 15:35:13
Dernière modification le : jeudi 7 février 2019 - 15:31:51

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  • HAL Id : hal-01978525, version 1

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Thanh-An Pham, Emmanuel Soubies, Joowon Lim, Alexandre Goy, Ferréol Soulez, et al.. PHASELESS DIFFRACTION TOMOGRAPHY WITH REGULARIZED BEAM PROPAGATION. IEEE International Symposium on Biomedical Imaging (ISBI), 2018, Washington, United States. 〈hal-01978525〉

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