基于LCD平面格网和有限元内插模型的相机标定

基金项目: 国家自然科学基金资助项目(40337055,40301041,40371099)。

详细信息

Camera Calibration Based on LCD Planar Grid and Interpolation by Finite Elements

¹ School of Remote Sensing and Information Engineering, Wuhan University, 129 Luoyu Road, Wuhan 430079, China

Funds: 国家自然科学基金资助项目(40337055,40301041,40371099)。

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。
- LCD平面格网 /
- 有限元内插 /
- 非参数畸变差 /
- 相机标定
Abstract: 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.
- planar grid /
- interpolation by finite elements /
- non-parametric distortion /
- camera calibration