Reconstruction algorithms applied to in-line Gabor digital holographic microscopy
Reconstruction algorithms applied to in-line Gabor digital holographic microscopy
复制标题
应用于在线 Gabor 数字全息显微镜的重建算法
DOI：
10.1016/j.optcom.2009.11.012
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发表时间：
2010
影响因子：
2.4
通讯作者：
T. Naughton
中科院分区：
文献类型：
--
作者：
Karen M. Molony;B. Hennelly;D. Kelly;T. Naughton
本文研究了基于菲涅耳的数值算法在重建伽柏同轴全息图中的应用。重点介绍了两种应用最广泛的菲涅耳近似算法：直接法和角谱法。这两种算法都涉及计算菲涅耳积分，但它们以根本不同的方式实现。不同的物理参数，如距离，CCD像素大小，等，算法执行不同，我们调查的约束条件时，适用于线Gabor数字全息显微术的算法。我们展示了为什么算法在某些情况下失败，以及如何改变它们，以获得有用的图像的显微标本。我们使用光学捕获的数字全息图验证改变的算法。
This paper investigates the application of Fresnel based numerical algorithms for the reconstruction of Gabor in-line holograms. We focus on the two most widely used Fresnel approximation algorithms, the direct method and the angular spectrum method. Both algorithms involve calculating a Fresnel integral, but they accomplish it in fundamentally different ways. The algorithms perform differently for different physical parameters such as distance, CCD pixel size, and so on. We investigate the constraints for the algorithms when applied to in-line Gabor digital holographic microscopy. We show why the algorithms fail in some instances and how to alter them in order to obtain useful images of the microscopic specimen. We verify the altered algorithms using an optically captured digital hologram.