基于圆形条纹径向空间载波相移的三维动态测量技术

3-D Dynamic Shape Measurement Based on Radial Spatial Carrier Phase Shifting from Circular Fringe Pattern

本文提出一种利用径向空间载波相移算法实现动态三维轮廓测量。本文主要使用DLP投影模块将圆条纹连续投影到运动物体上,通过CCD相机记录畸变的条纹图案获取物体信息进行三维运算。在3-D重建过程中,通过采集得到的一幅变形图形进行数字径向移动得到另外两幅相移图像,与原始图像构成新的三幅具有相移量的变形条纹图。本文通过仿真和实验验证了所提方法的正确性。

In this paper,we propose a method to realize real-time three-dimensional(3-D)measurement with a radial spatial carrier phase shifting algorithm.The circular fringe patterns are continuously projected onto the moving object by DLP;the distorted fringe patterns are recorded by CCD.In the 3-D reconstruction process,three patterns consisting by one recorded image and two artificial phase shifting fringe patterns are used to implement phase shifting,where the two artificial patterns are formed by numerically shifting the recorded image along the radial direction.This article verifies the correctness and accuracy of the proposed method through simulation and experiment.As a real-time quantitative dynamic measurement method,it can be applied in various fields.