摘要
提出了一种全自动、基于纯平液晶显示器(LCD)平面格网、非参数畸变差和有限元内插模型的相机标定方法。由于相机内参数自身,以及内参数与绕LCD屏幕垂轴旋转的旋转角之间严重相关,特别引入了另外两类条件方程,使得参数之间的相关性得到削弱。实验证明了该方法的可行性,并且其精度高于一般的基于参数畸变差的标定方法。
A new camera calibration method is presented based on completely flat liquid crystal display （LCD） and the interpolation model of digital elevation model （DEM） by finite elements, which belongs to non-parametric distortion calibration model. Firstly, the proposed calibration method is presented detailedly. And then, two other kinds of conditional equations are imported after correlativity analysis. A simple and automatic calibration algorithm is designed. Good results and comparisons with the method of normal parametric distortion model show that its accuracy is better than that of the latter.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2007年第5期394-397,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(40337055
40301041
40371099)。
关键词
LCD平面格网
有限元内插
非参数畸变差
相机标定
planar grid
interpolation by finite elements
non-parametric distortion
camera calibration
