基于投影法检测光学元件面形的图形处理算法

基于线结构光扫描测量和立体视觉测量相结合的三维检测方法——投影法,能够快速准确地实现光学元件面形的在线检测,通过对采集图片的图像预处理,区域立体匹配分析,曲线拟合及面形实验等算法还原被测光学元件面形模型。实验结果表明,将这种方法用于检测光学元件可以真实还原光学元件三维外貌特性,具有实际应用价值。

Research on image processing algorithms for detecting the surface profile of optical component based on projection method

The projection method, that is a method of 3D surface profile detection based on the combination of linear structured light scanning measurement and stereoscopic vision measurement, can detect the surface profile of optical component online quickly and accurately. In this paper,an image processing algorithm is presented including pre-processing, area-based stereo matching, curve fitting and surface characterization testing, to recover the surface profile model of optical component. The results of the experiments show that this method can reconstruct the three-dimensional exterior characteristics of the optical component truly and accurately. Therefore, the research is feasible and has research value.