标题：Effective Algorithm for Detection and Correction of the Wave Reconstruction Errors Caused by the Tilt of Reference Wave in Phase-shifting Interferometry
作者：Xu, Xianfeng; Cai, Luzhong; Li, Dailin; Mao, Jieying
作者机构：[Xu, Xianfeng; Li, Dailin; Mao, Jieying] China Univ Petr East China, Coll Phys Sci & Technol, Y Dongying 257061, Shandong, Peoples R China.; [Cai, L 更多
会议名称：International Conference on Advanced Phase Measurement Methods in Optics and Imaging
会议日期：MAY 16-21, 2010
来源：INTERNATIONAL CONFERENCE ON ADVANCED PHASE MEASUREMENT METHODS IN OPTICS AN IMAGING
关键词：Phase shift; Holographic interferometry; Image reconstruction; Phase; retrieval; Image processing
摘要：In phase-shifting interferometry (PSI) the reference wave is usually supposed to be an on-axis plane wave. But in practice a slight tilt of reference wave often occurs, and this tilt will introduce unexpected errors of the reconstructed object wave-front. Usually the least-square method with iterations, which is time consuming, is employed to analyze the phase errors caused by the tilt of reference wave. Here a simple effective algorithm is suggested to detect and then correct this kind of errors. In this method, only some simple mathematic operation is used, avoiding using least-square equations as needed in most methods reported before. It can be used for generalized phase-shifting interferometry with two or more frames for both smooth and diffusing objects, and the excellent performance has been verified by computer simulations. The numerical simulations show that the wave reconstruction errors can be reduced by 2 orders of magnitude.