An improved phase retrieval method based on Hilbert transform in interferometric microscopy
An improved phase retrieval method based on Hilbert transform in interferometric microscopy
复制标题
干涉显微镜中基于希尔伯特变换的改进相位恢复方法
DOI：
10.1016/j.ijleo.2012.05.029
复制
发表时间：
2013-01-01
期刊：
影响因子：
3.1
通讯作者：
Li, Zhenhua
中科院分区：
文献类型：
--
作者：
Wang, Shouyu;Xue, Liang;Li, Zhenhua
提出了一种改进的基于希尔伯特变换的相位恢复方法，用于定量计算微干涉图样的相位分布。利用希尔伯特变换具有π/2相移和损失直流偏移量的特性，从离轴干涉图中去除直流分量，得到相位分布。与传统的Hilbert方法相比，该方法省去了傅里叶变换，避免了频率泄漏问题，提高了计算效率。在显微干涉测量的基础上，采用改进的方法对兔红细胞的相位分布进行了反演。实验结果表明，该算法具有较高的计算效率和保留样本细节的能力。(C)2012 Elsevier GmbH. All rights reserved.
An improved phase retrieval method based on Hilbert transform is introduced to quantitatively calculate the phase distribution from a micro-interferometric pattern. The property of Hilbert transform, losing DC offsets and owning pi/2 phase shifting, is used to remove the DC component and obtain the phase distribution from an off-axis interferogram. Compared with traditional Hilbert method, the Fourier transform is omitted that can avoid the questions of frequency leakage and improve the computational efficiency. Based on the micro-interferometric measurement, the improved method is used to retrieve the phase distribution of rabbit red blood cells. And the corresponding results show that it owns high calculation efficiency and the ability of reserving details of samples. (C) 2012 Elsevier GmbH. All rights reserved.