摘要
棋盘格模板角点的定位是摄像机定标过程中的重要环节,定位的正确与否直接关系到定标的成败.提出了一种利用棋盘格模板图像中的消失点和栅格线特征以及局部灰度特征,实现棋盘格模板角点自动定位的方法.结果表明,与手动定位相比,该方法明显地减少了定位过程所用的时间,提高了工作效率,尤其适合于利用多幅棋盘格模板图像对摄像机进行自动化定标.
The loc.ation of the internal comers of a planar checkerboard pattern image is very important to camera calibration. An effective approach is proposed to automatically loc.ate the internal target corners of a planar checkerboard pattern image, based on the characteristics of the vanishing point, the grid line architecture and the local gradation. Experimental results showed that the approach can obviously save the time required for camera calibration and speed up the calibration process. Especially, it is adapted to the automatic multi-image calibration.
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第9期949-952,共4页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(60475036)
关键词
棋盘格模板
摄像机定标
角点定位
消失点
栅格线
checkerboard pattern
camera calibration
comer location
vanishing point
grid line
