Versatile reconstruction framework for diffraction tomography with intensity measurements and multiple scattering.
Versatile reconstruction framework for diffraction tomography with intensity measurements and multiple scattering.
复制标题
用于衍射断层扫描的多功能重建框架，具有强度测量和多重散射。
作者：
Thanh;Emmanuel Soubies;A. Goy;Joowon Lim;F. Soulez;D. Psaltis;M. Unser
得益于最近在全息测量的相位恢复和折射率估计方面的进展，我们提出了一个统一的框架来从仅强度的测量中重建它们。我们的方法依赖于反问题的通用和通用的公式，并包括稀疏约束。它的模块化使各种正演模型的使用成为可能，从简单的线性模型到更复杂的非线性模型，以及各种正则化。我们提出了采用光束传播法或迭代Lippmann-Schwinger模型并结合全变分正则化的重建方法。他们认为，我们提出的(仅限强度)方法可以达到与从全息(复杂)数据重建相同的性能。从实用的角度来看，这是特别有意义的，因为它允许简化采集设置。
Taking benefit from recent advances in both phase retrieval and estimation of refractive indices from holographic measurements, we propose a unified framework to reconstruct them from intensity-only measurements. Our method relies on a generic and versatile formulation of the inverse problem and includes sparsity constraints. Its modularity enables the use of a variety of forward models, from simple linear ones to more sophisticated nonlinear ones, as well as various regularizers. We present reconstructions that deploy either the beam-propagation method or the iterative Lippmann-Schwinger model, combined with total-variation regularization. They suggest that our proposed (intensity-only) method can reach the same performance as reconstructions from holographic (complex) data. This is of particular interest from a practical point of view because it allows one to simplify the acquisition setup.