面向高光金属表面的激光三维检测算法 three-dimensional laser detection algorithm for highlight on metal surface.pdfVIP

第28 卷第6 期 光电技术应用 Vol.28 ，No.6 2013 年12月 ELECTRO-OPTIC TECHNOLOGY APPLICATION December ，2013 ·信号与信息处理· 面向高光金属表面的激光三维检测算法 张 磊，程筱胜，崔海华，戴 宁，裴 旭 (南京航空航天大学机电学院，江苏 南京 210016) 摘 要：针对激光三维检测过程中金属表面高光现象对后续检测带来的干扰问题，提出一种峰值连续性检测的方法。首先 根据灰度图像的灰度信息提取每一列的灰度峰值；其次依据激光条纹连续性判断峰值信息的有效性，将有效峰值保留，去除干扰 波峰，实现高光现象的去除；最后通过检测标准台阶块，对实验结果进行验证。结果表明，相对于一般细化处理的重建结果，高光 处理后的重建精度可提高近50% ，同时也证明了该方法的有效性。 关键词：测量；高光消除；峰值连续性检测；三维检测 中图分类号：TH741 文献标识码：A 文章编号：1673-1255（2013 ）-06-0044-05 Three-dimensionalLaserDetectionAlgorithmforHighlightonMetalSurface ZHANG Lei, CHENG Xiao-sheng, CUI Hai-hua, DAI Ning, PEI Xu (College of Mechanical and Electrical, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China) Abstract:Focusing on the interference problem of subsequent detection from highlight on metal surface in the process of 3D laser detection, a peak continuity detection method is proposed. Firstly, gray peak in each column is extracted according to the gray information in gray images. Then, the peak validity is estimated based on laser stripe continuity to remove false peak and maintain the valid, and the effect of highlight can be removed. Finally, experi⁃ mental results are verified by detecting standard step block. The results show that the reconstruction accuracy after highlight processing is enhanced nearly 50% corresponding to the reconstruction results of common refinement treatment, and the validity of the method is verified. Keywords:measurement; highlight eliminating; peak continuity detection; 3D detection [1-2] 低。Klinker 根据两色反射模型[5] 在激光三维检测 过程中，当激光条纹投射到 对漫反射和高光像 漫反射的物体表面时，会产生稳定的光条纹；而投射 素进行分析，从而移除高光，该方法存在计算复杂不 到镜面反射[3] 的金属表面时，则会因为镜面反射导致 适合实时处