An evaluation method for phase shift extraction algorithms in generalized phase-shifting interferometry
An evaluation method for phase shift extraction algorithms in generalized phase-shifting interferometry
复制标题
广义相移干涉测量中相移提取算法的评估方法
DOI：
10.1088/2040-8978/15/10/105408
复制
发表时间：
2013-09
影响因子：
2.1
通讯作者：
Qingpu Wang
中科院分区：
文献类型：
--
作者：
Yurong Wang;Xiangfeng Meng;Xiulun Yang;Qingpu Wang
提出了一种定量评价广义相移干涉术（GPSI）中相移提取算法性能的方法。重建信噪比（R-SNR）作为评价指标。以重建的目标图像为信号，DC项和共轭图像的残差为噪声，定义了R-SNR。相移提取的精度越高，直流项和共轭像的残留量越小，则获得的R-SNR越高。为了避免DC项和共轭像与物像的重叠，采用了离轴数字全息结构。计算机仿真和光学实验均验证了该方法的正确性和有效性。所提出的方法的主要优点是，它利用实验检测数据，而不仅仅是计算机模拟结果。
A method to evaluate quantitatively the performance of the phase shift extraction algorithms in generalized phase-shifting interferometry (GPSI) is proposed. A parameter named as reconstruction signal-to-noise ratio (R-SNR) is used as the evaluation measure. The R-SNR is defined with the reconstructed object image as the signal and the residual of the DC term and conjugate image as noise. The more accurate the extracted phase shift is, the less residual of the DC term and conjugate image there is, and then the higher R-SNR is obtained. To avoid the overlap of the DC term and conjugate image and the object image, the off-axis digital holography configuration is adopted. The correctness and effectiveness of the proposed method have been verified by both computer simulation and optical experiments. The major advantage of the proposed method is that it utilizes the experimental detectable data and not only the computer simulation results.
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影响因子：
4.6
作者：
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通讯作者：
Hongwei Guo;Zhang Zhao;Mingyi Chen
影响因子：
4.6
作者：
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影响因子：
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影响因子：
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通讯作者：
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影响因子：
2.4
作者：
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通讯作者：
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