Eric Wu | 河海大学 智能建造 & AI

《A Versatile Camera Calibration Techniaue for High-Accuracy 3D Machine Vision Metrology Using Off-the-shelf TV Cameras and Lenses》

一个使用现成的TV摄像机和柔性焦距透镜组的用于高精确率3D机器视觉度量的多功能相机标定技术

versatile 英 [ˈvɜːsətaɪl]美 [ˈvɜːrsət(ə)l] adj. 多才多艺的，有多种技能的；多用途的，多功能的

calibration 英 [ˌkælɪˈbreɪʃn]美 [ˌkælɪˈbreɪʃn] n. 标定，校准；（测量器具上的）刻度 [ 复数 calibrations ]

metrology 英 [məˈtrɒlədʒi] 美 [məˈtrɑːlədʒi] n. 度量衡；度量衡学

Off-the-shelf 现成的

lenses 英 [ˈlensɪz] 柔性焦距透镜组

Abstract

Abstract-A new technique for three-dimensional (3D) camera calibration for machine vision metrology using off-the-shelf TV cameras and lenses is described. The two-stage technique is aimed at efficient computation of camera external position and orientation relative to object reference coordinate system as well as the effective focal length, radial lens distortion, and image scanning parameters. The two-stage technique has advantage in terms of accuracy, speed, and versatility over existing state of the art. A critical review of the state of the art is given in the beginning. A theoretical framework is established, supported by comprehensive proof in five appendixes, and may pave the way for future research on 3D robotics vision. Test results using real data are described. Both accuracy and speed are reported. The experimental results are analyzed and compared with theoretical prediction. Recent effort indicates that with slight modification, the two-stage calibration can be done in real time.

摘要-本文介绍了一种利用现成电视摄像机和镜头进行三维（3D）相机校准的新型技术。该两阶段技术旨在高效计算相机外部位置和相对于物体参考坐标系的方向，以及有效焦距、径向镜头畸变和图像扫描参数。这个两个阶段技术在精度、速度和多功能性方面优于现有技术。开头对该技术的最新状况进行了批判性回顾。建立了理论框架，并由五个附录中详实的证明支持，可能为未来三维机器人视觉的研究铺平道路。使用真实数据的测试结果在文章中被描述。报告中既有准确度衡量，也有速度的衡量。实验结果会被分析并与理论预测进行比较。最新研究显示，只需稍作修改，两阶段校准即可实时完成。