摘要
提出了一种基于平面网格靶标的视觉传感器的标定方法。首先利用平面网格靶标来获取标定点,同时利用交比不变原理不断修正镜头的畸变参数,从而提高了标定点的精度,然后根据这些标定点利用RAC算法对视觉传感器的内外参数进行标定。试验结果表明,基于共面法的视觉传感器的标定方法操作简便,切实可行,具有较高的精度。
A calibration method of vision sensors based on a planar gridding target was presented. By using a planar gridding target calibration points could be achieved, and the precision of these calibration points were improved through revising the distortion coefficients of lens according to the principle of cross ratio invariability. Then RAC arithmetic was applied to calibrate intrinsic and extrinsic parameters of the vision sensor. Experimental results show that this method is simple and practical with high precision.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2006年第16期1690-1693,共4页
China Mechanical Engineering
关键词
视觉传感器
畸变参数
标定
交比不变
RAC
平面网格靶标
vision sensor
distortion coefficients
calibration
cross ratio invariability
radial alignment constraint
planar gridding target
