摘要
为实现单目摄像机的三维空间测量,引入近景摄影测量技术,提出了三维DLT算法的单目摄像机空间测量方法,研究相机参数标定、图像畸变校正、控制点靶标布设、DLT线性变换求解等关键流程,建立了像平面坐标和物方空间坐标之间的几何关系,最终实现目标的距离和高度等三维空间尺寸测量。实验结果表明,基于三维DLT算法的单目摄像机空间测量相对误差小于5%,满足现场勘查和检验鉴定的精度要求,具有较强的可操作性和通用性。
In order to realize the 3D spatial measurement of the monocular camera,the paper introduces the close-up photogrammetry technology and proposes the 3D DLT algorithm for the monocular camera spatial measurement method.By studying key processes of camera parameter calibration,image distortion correction,control point target deployment,DLT linear transformation,etc.,the geometric relationship between image plane coordinates and object space coordinates is established,thus,the 3D spatial dimension such as the distance and the height of the target is measured.The experimental results show that the relative error of monocular camera spatial measurement based on 3D DLT algorithm is less than 5%,which can meet the accuracy requirements of site investigation and identification and is strongly operable and versatile.
出处
《道路交通科学技术》
2021年第3期23-26,共4页
Road Traffic Science & Technology
关键词
DLT算法
单目视觉
空间定位
近景摄影测量
三维重建
DLT algorithm
monocular vision
spatial positioning
close-up photogrammetry
3D reconstruction
