摘要
结构光三维测量系统的参数标定是获取三维数据的重要步骤之一,其中包括摄像机的参数标定和结构光平面的参数标定。为了解决传统光平面标定算法复杂、检测实时性低的问题,提出了一种基于定向移动平面标靶的光平面间接标定法,首先利用特征加窗提取技术和形态学细化算法对标靶平面上的光条进行中心线提取,进而获取光条中心线上的图像像素坐标点;其次结合已经标定好的摄像机参数和光平面所在的坐标分量的坐标值反解求出标定特征点的三维世界坐标;最后利用最小二乘法对求得的三维坐标点进行光平面拟合,从而实现对光平面的标定过程。采用Matlab GUI界面编程方法实现对光平面参数标定试验以及三维测量试验,验证了该方法的有效性和优越性。
The parameter calibration of the structured light three-dimensional measurement system is one of the important steps for obtaining three-dimensional data, including the parameter calibration of the camera and the parameter calibration of the structured light plane. in order to solve the complex problem of traditional optical plane calibration algorithm and low real-time detection, this paper proposes an indirect optical plane calibration method based on directional moving plane targets. Firstly, feature windowing extraction technology and morphology refinement algorithm are used to target the target. The light bar in the plane carries out the center line extraction, and then obtains the image pixel coordinate point on the center line of the light bar.Secondly, the three-dimensional world coordinates of the calibration feature points are obtained by inversely combining the coordinate values of the camera parameters and the coordinate components of the optical plane. Finally, the three-dimensional coordinate points of the obtained three-dimensional coordinate points are fitted by theleast squares method, thereby realizing The calibration process of the light plane. The Matlab Gui interface programming method is used to realize the calibration test of the optical plane parameters and the three-dimensional measurement test, which verifies the effectiveness and superiority of the method.
作者
罗凯璐
惠记庄
刘琼
杨永奎
Luo Kailu;hui Jizhuang;Liu Qiong;YANG Yongkui(Chang’an university,Xi’an 710064)
出处
《现代制造技术与装备》
2018年第7期17-21,共5页
Modern Manufacturing Technology and Equipment
