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Nonlocal Differential Operators Improve Image Reconstruction in Diffuse Optical Tomography

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Abstract

We propose a nonlocal Tikhonov regularization to the inverse model in diffuse optical tomography, using a spatial gradient operator defined on irregular meshes. Numerical experiments show that the proposed method is able to achieve better depth localization and higher image contrast than standard methods.

© 2018 The Author(s)

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