动态过程的三维面形测量

本文提出了一种基于付里叶变换轮廓术的动态三维面形测量方法，通过ＣＣＤ快速摄像得到物体处于动态过程中的一系列变形条纹，利用计算机做付里叶变换、频谱滤波、逆付里叶变换，得到一有三维空间分布的位相场。通过在ｘ，ｙ，ｔ三个方向上进行位相展开和位相－高度映射关系，可恢复出处于动态过程的物体的一系列面形，能再现物体的变化过程。本文给出了理论分析、实验研究及计算机模拟结果。

Dynamic 3-D Shape Detected

A new method is proposed to detect the dynamic 3-d shape of object,which is based on FFT method.A sequence of deforming fringe-images can be saved on disk by CCD snap. By FFT algorithm a sequence of phase-maps can be obtained,Encoding these phase-maps in 3-D(x,y,t) field,we can get the shape of object at different time.In this paper, we present the thoretical analysis and the results of simulation caculation and experiment.