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arXiv 1402.0550math.OCphysics.opticsstat.ME
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交替投影、重叠关联成像和相位同步

Alternating Projection, Ptychographic Imaging and Phase Synchronization

Stefano Marchesini, Yu-Chao Tu, Hau-tieng Wu

摘要:

我们证明了交替投影算法的局部收敛到一个唯一的解决方案的全局相位因子的充要条件和充分条件。此外,对于重叠关联成像问题,我们讨论了相位同步和图连接拉普拉斯算子,并展示了如何构建一个准确的初始猜测,以加快收敛速度,以处理即将到来的新光源时代的大成像数据。

英文摘要:

We demonstrate necessary and sufficient conditions of the local convergence of the alternating projection algorithm to a unique solution up to a global phase factor. Additionally, for the ptychography imaging problem, we discuss phase synchronization and graph connection Laplacian, and show how to construct an accurate initial guess to accelerate convergence speed to handle the big imaging data in the coming new light source era.

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