【摘要】 提出了一种基于时域傅里叶变换的广义相移相位恢复方法。该方法不需要对相移量进行特殊标定,就可从一系列相移量单调变化的干涉条纹图中快速地恢复出物体的相位。由于所提方法是运用傅里叶变换逐点从频域提取物体的相位,所以该方法不仅具有良好的抗干扰性能,而且对干涉图中的条纹数目没有要求,可以从条纹数少于1的相移干涉图中精确地恢复相位。数值模拟与实验结果均表明所提方法具有操作简单、方便、快速、精度高等优点。更多还原

【Abstract】 An generalized phase-shifting phase retrieval approach based on time-domain Fourier transform(TFT)is proposed. There is no the special requirement for the phase shift calibration, and the measured phase can be retrieved quickly from a sequence of interferograms whose phase shifts are changed monotonously. By using Fourier transform to obtain the object’s phase point-by-point from the frequency domain, the proposed method not only has good anti-interference performance, but also the fringe number of the interferogram is not required. Even in the case that the fringe number of the interferogram is less than one, the proposed approach still works well. Both the numerical simulation and experimental results show that the proposed approach is simple, convenient, fast and high precision.更多还原