摘要
基于影像几何原理,推导了无人机(UAV)进行桥梁检测中物高、物距、焦距和像高之间的关系。提出了适用于桥梁检测的无人机图像传输系统。通过对照试验分别探究相机的测量精度和测量距离之间的关系,测量精度和测量角度之间的关系,以及测量精度和本身裂缝大小之间的关系。经测试,文中提出的无人机图像系统能够满足桥梁裂缝测量的要求。
Based on the theory of geometric imaging, the relationship between object distance, focal length, image height and object height is derived for the bridge inspection by means of unmanned aerial vehicle. The system of image transmission that is suitable for bridge inspection is put forward. Accord- ingly, controlled trials are carried out, exploring the relationship between measurement accuracy of cam- era and measuring distance, between measurement accuracy of camera and measuring angle, and be- tween measurement accuracy and crack size. As a conclusion, the image system of UAV present in the paper meets the requirements of bridge cracks detection in practice.
作者
陈旭芳
袁栋
郁乐乐
CHEN Xufang YUAN Dong Yu Lele(College of Civil Engi. and Architecture, HangZhou 310058, China)
出处
《低温建筑技术》
2017年第4期28-30,共3页
Low Temperature Architecture Technology
关键词
无人机
影像几何原理
桥梁检测技术
图传系统
UAV
image geometry
bridge detection technology
image transmission system
