Fast quality-guided phase unwrapping algorithm through a pruning strategy: applications in dynamic interferometry

Lopez-Garcia Lourdes; Garcia-Arellano Anmi; Cruz-Santos William

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Fast quality-guided phase unwrapping algorithm through a pruning strategy: applications in dynamic interferometry

机译：通过修剪策略的快速质量引导淘汰算法：动态干涉测量中的应用

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The quality-guided phase unwrapping algorithm is one of the most employed spatial algorithms due to its computational efficiency and robustness. It uses a quality map to guide the unwrapping process such that pixels are processed according to their quality values from highest to lowest. Several improvements have been proposed during the last few years with the purpose of using it in time-demanding applications. However, many of the proposals depend on the distribution of the values on the given quality map. In this paper, a novel pruning strategy based on a red - black tree data structure is proposed, whose complexity time is independent of the distribution of the given quality map. We take advantage of the partial ordering of the branches in a red - black tree together with a pruning strategy to speed up the unwrapping process. Experimental results, using real and simulated data, show that the complexity time of our proposal improves the existing quality-guide-based algorithms. Also, a series of interferometric patterns of a time-varying phase distribution experiment have been processed showing that our proposal can be used for real-time applications. The source code of the implemented algorithms is publicly available. (C) 2018 Optical Society of America.

机译：质量引导的相位展开算法是由于其计算效率和稳健性导致的最多使用的空间算法之一。它使用质量贴图来指导展开过程，使得根据其质量值从最高到最低的质量值进行处理。在过去几年中提出了几种改进，目的是在苛刻的应用中使用它。然而，许多提案取决于给定质量图上的值的分布。在本文中，提出了一种基于红黑树数据结构的新型修剪策略，其复杂性时间与给定质量图的分布无关。我们利用了一棵红黑树中分支的部分排序，并加快了修剪策略来加快展开过程。实验结果，使用真实和模拟数据，表明我们提案的复杂时间提高了现有的基于质量指导算法。此外，已经处理了一系列时变相分布实验的干涉模式，表明我们的提案可用于实时应用。可公开可用的实现算法的源代码。（c）2018年光学学会。

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《Applied optics》 |2018年第12期|共8页
作者
Lopez-Garcia Lourdes; Garcia-Arellano Anmi; Cruz-Santos William;
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CU UAEM Valle de Chalco Hermenegildo Galeana 3 Valle De Chalco 56615 Estado De Mexic Mexico;

CONACYT ECOSUR Unidad Chetumal Av Centenario Km 5-5 Chetmal 77014 Quintana Roo Mexico;

CU UAEM Valle de Chalco Hermenegildo Galeana 3 Valle De Chalco 56615 Estado De Mexic Mexico;

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Fast quality-guided phase unwrapping algorithm through a pruning strategy: applications in dynamic interferometry

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