应用科学学报 ›› 2017, Vol. 35 ›› Issue (1): 107-116.doi: 10.3969/j.issn.0255-8297.2017.01.012

• 信号与信息处理 • 上一篇    下一篇

用井字结构光对规则部件进行三维测量

蔡晨, 潘斌, 刘振宁   

  1. 武汉大学 遥感信息工程学院, 武汉 430079
  • 收稿日期:2015-09-30 修回日期:2016-04-09 出版日期:2017-01-30 发布日期:2017-01-30
  • 作者简介:潘斌,教授,研究方向:雷达遥感,E-mail:panbin@whu.edu.cn

3D Measurement of Regular Components Base on Structured Light with an Intersecting-Parallels Shape

CAI Chen, PAN Bin, LIU Zhen-ning   

  1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China
  • Received:2015-09-30 Revised:2016-04-09 Online:2017-01-30 Published:2017-01-30

摘要:

提出一种利用井字结构光对规则部件进行三维视觉测量的方法.将井字结构光投射到标定板上并采集图像,对其进行图像处理,标定井字结构光测量系统.再将井字结构光投射到规则部件上并采集图像.经图像处理提取光条中心,获得物体三维坐标信息.实验表明,该测量方法的测量范围为700~1 000 mm时,测量误差小于0.5 mm.

关键词: 三维测量, 计算机视觉, 交比不变性, 结构光

Abstract:

This paper proposes a method using structured light with an intersectingparallels shape to carry out three-dimensional (3D) vision measurement for regular components.This structured light is projected onto a calibration plate.Images are acquired and processed to calibrate the measurement system.The light is then projected on the component and images are captured and processed in order to extract the centers of the light strips.Combined with the calibration and light strip data, 3D coordinates of the object are calculated precisely.Experimental results show that the measure mentrange is between 700 mm and 1 000 mm, with errors less than 0.5 mm.

Key words: computer vision, 3D measurement, structured light, cross ratio invariability

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