噪音相位图中强莫尔条纹密度和方位的研究

Study of strong Moire-fringe density and direction in noisy phase maps

本文采用一种自动条纹分析的预处理方法,对噪音相位图中的莫尔条纹密度和方向的估计进行了分析研究。这些信息能用来构造相位-跳转-保存-过滤方法,提高二维展开相位法的性能以及可以使用坚固片断的相位数据。这种方法的特点是:对噪音反应非常灵敏,测试和参数的估算都要在傅里叶范围内进行并可以做成模型用于估算研究。

In this paper, strong Moire- fringe density and direction are studied in noisy phase mans using a preprocessing method of automatic Moire- fringe analysis. 3his information can be used to improve the performance of 2 - D phase unwrapping methods, to construct phase - jump - preserving filtering strategies, and also to perform robust segmentadon of phase data. The method is highly insensitive to noise, is model based and performs the studies in the Fourier domain.