摘要
提出一种基于二维轮廓数据的旋转扫描系统标定方法。分别对每个传感器采集的二维轮廓数据提取关键特征,通过建立特征间的匹配关系来实现多传感器相对位姿的精确标定;利用激光平面、标靶和转轴三者的几何约束关系来求解转轴的初始解,同时根据标靶的几何尺寸建立目标优化函数,迭代求解出转轴的精确解。实验结果表明,系统测量精度可达0.08 mm,测量时间为20 s,所提方法不仅可替代人工检测,实现车轮尺寸的在线测量,还可以推广应用到其他大型回转体三维测量中。
A calibration method for a rotary scanning system is proposed based on two-dimensional profile data. Firstly, key features of two-dimensional profile data collected by each sensor are extracted, and the accurate calibrations for relative poses of multiple sensors are achieved by establishing the matching relationship of the obtained features. Secondly, initial solution of the rotating axis is estimated based on the geometric constraint among the laser plane, target, and rotating axis. Meanwhile, the target optimization function is established based on the target radius size, and the precise pose of the rotating axis can be solved iteratively. Experimental results show that the measurement accuracy reaches 0.08 mm, and the measurement time is 20 s. The proposed method can replace the manual detection, achieve on-line measurement of wheel size, and be applied to 3D measurements for other large rotators.
作者
陈瀚
张思瑾
高见
王涛
马德清
李中伟
钟凯
王从军
史玉升
Chen Han;Zhang Sijin;Gao Jian;Wang Tao;Ma Deqing;Li Zhongwei;Zhong Kai;Wang Congjun;Shi Yusheng(State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Hubei, Wuhan 430074, China;Xinyang Amsted Tonghe Wheels Co. , Ltd. , Henan, Xinyang 464100, China)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2019年第7期191-197,共7页
Chinese Journal of Lasers
关键词
测量
尺寸检测
线激光传感器
多视拼合
转轴标定
measurement
dimension inspection
line-laser sensor
multi-view registration
axis calibration
