摘要
研究工业设备检测问题,为提高工业检测的效率,研究了激光线扫描与双目视觉相结合的零件测量方法。测量系统中两台摄像机成一定角度布置,线结构光投射到工件表面产生变形的激光条纹,作为形状表面测量标志线。为提高设备检测精度,系统标定中采用普通的电脑液晶显示屏作为标定模板,液晶屏中显示按规律变换位置的平行直线束图像,摄像机进行同步拍摄获取液晶屏图像序列。精确提取光条中心线,利用激光光条本身的成像特点与极线约束准则来进行对应点的匹配。完成测量点的三维坐标重构,进行仿真。实验结果表明了方法具有一定的可行性和有效性,在工业检测领域有较好的应用前景。
To improve efficiency of industry detection and measurement,measuring method of part shape which combines laser linear scan and binocular vision is researched.In this system,two cameras are located at certain angle,and linear structured light is projected onto the part surface to produce distorted laser stripe,which is used as measure feature curve.Image sequences of moving planar target are used during the whole calibration process,and both calibration of individual camera and binocular vision are carried out simultaneously.Ordinary computer LCD screen is used as calibration plate in system calibration,images of serial parallel lines bundle whose position is changed by control are displayed on it,which are shot simultaneously by the camera to produce image series.Center points of light stripe are accurately extracted,and then matching of corresponding points is realized by using of imaging character and epipolar constraint criteria.Based on above works,reconstruction of 3D coordinate is completed successfully.Experimental result shows the feasibility and effectiveness of the method,thus good prospect can be expected with it.
出处
《计算机仿真》
CSCD
北大核心
2011年第2期373-377,共5页
Computer Simulation
关键词
双目视觉
摄像机标定
激光线扫描
极线约束
三维重构
Binocular vision
Camera calibration
Laser line scan
Epipolar constraint
3D reconstruction
