Phase recovery from a single undersampled interferogram
Phase recovery from a single undersampled interferogram
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DOI：
10.1364/ao.42.006846
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发表时间：
2003-12-01
期刊：
影响因子：
1.9
通讯作者：
Páez, G
中科院分区：
文献类型：
--
作者：
Muñoz, J;Strojnik, M;Páez, G
本文介绍了一种从欠采样干涉图中确定相位的新方法。从混叠测量数据的相邻像元处得到了两个与正交方向相位差对应的低条纹密度合成干涉图。唯一的假设是，照明背景，调制强度和搜索相位是光滑和连续的函数。合成干涉图通过使用标准频率或空域程序解调来获得相位差。然后用最小二乘法对相位差积分恢复相位。结果表明，该方法具有良好的耐噪性。(C) 2003年美国光学学会。
A new method of phase determination from a single undersampled interferogram is described. Two low-fringe-density synthetic interferograms corresponding to the phase differences along orthogonal directions are obtained from neighboring pixels of the aliased measured data. The only assumption is that the illumination background, the modulation intensity, and the searched phase are smooth and continuous functions. The synthetic interferograms are demodulated by use of either standard frequency or spatial-domain procedures to obtain the phase differences. The phase is then recovered by integration of the phase differences with a least-squares method. The proposed method is demonstrated to be noise tolerant. (C) 2003 Optical Society of America.