摘要
在测量系统中,对摄像机进行标定是有效提高系统测量精度方法之一。通过借助1个2D的平面靶标,降低了标定时所需靶标的制作难度,使得靶标更易于携带。利用张正友的方法,首先,采用Matlab工具箱分别对CCD摄像机的内部、外部参数进行标定,获取CCD摄像机与世界坐标系的几何关系;其次,通过立体标定得到2台CCD摄像机之间的位置关系;最后,对1个标准的台阶模型进行测量,该模型的左侧由多个平行平面组成,相邻平行平面之间的间距均为1.00 mm,右侧为一斜面。通过实验实际测量,相邻平行平面间距离为0.99 mm。
The camera calibration is an effective way to improve the precision of measuring system. A 2D planar target is introduced to simplify the complicated target for calibration. The intrinsic and extrinsic parameters of the CCD camera are calibrated by the Matlab toolbox. The position relation between two CCD cameras is gained by stereo-calibration. Finally, a model consisted of four steps with a neighboring height of l. 00ram and an inclined plane was also measured. The measured average height between neighboring steps is 0.99mm.
出处
《实验室研究与探索》
CAS
北大核心
2013年第6期37-39,共3页
Research and Exploration In Laboratory
关键词
机器视觉
双目视觉测量系统
摄像机标定
machine vision
stereo-vision measuring system
camera calibration
