Phase-step insensitive algorithms for phase-shifting interferometry
Phase-step insensitive algorithms for phase-shifting interferometry
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DOI：
10.1088/0957-0233/5/6/003
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发表时间：
1994-06
影响因子：
2.4
通讯作者：
C. T. Farrell;M. Player
中科院分区：
文献类型：
--
作者：
C. T. Farrell;M. Player
描述了两种新的相位提取算法，其中步长不需要已知或相等。一种算法需要至少五个干涉图，根据该干涉图计算每个像素处的强度偏移和强度调制，并且计算所有像素相对于参考像素的相对相位。另一种算法需要两个相移机构和至少十个干涉图。在每个像素上计算亮度特性和参考相位步长，并使用先前公布的算法进行最终相位计算。
Two novel phase extraction algorithms, in which step sizes need not be known or equal, are described. One algorithm requires a minimum of five interferograms from which intensity offset and intensity modulation are calculated at each pixel and the relative phase is calculated for all pixels with respect to a reference pixel. The other algorithm requires two phase stepping mechanisms and a minimum of ten interferograms. The intensity characteristics and reference phase step are calculated at each pixel and a previously published algorithm is used for the final phase calculation.