论文标题
使用主要线条可视化和减轻径向失真对摄像机校准的影响
Visualizing and Alleviating the Effect of Radial Distortion on Camera Calibration Using Principal Lines
论文作者
论文摘要
为相机校准准备适当的图像对于获得准确的结果至关重要。在本文中，通过研究通过以下研究来开发用于使用主要线条进行校准程序的径向扭曲程序的不利影响的新建议：因此，建议主点的估计应基于几乎平行的主线的线性独立对，每对中的一个成员对应于另一个接近180度的旋转（在图像平面中）。实验结果表明，与著名的代数方法相比，实际上可以获得上述估计的更稳定和一致的校准结果，这些代数方法明确估算了失真参数。
Preparing appropriate images for camera calibration is crucial to obtain accurate results. In this paper, new suggestions for preparing such data to alleviate the adverse effect of radial distortion for a calibration procedure using principal lines are developed through the investigations of: (i) identifying directions of checkerboard movements in an image which will result in maximum (and minimum) influence on the calibration results, and (ii) inspecting symmetry and monotonicity of such effect in (i) using the above principal lines. Accordingly, it is suggested that the estimation of principal point should based on linearly independent pairs of nearly parallel principal lines, with a member in each pair corresponds to a near 180-degree rotation (in the image plane) of the other. Experimental results show that more robust and consistent calibration results for the foregoing estimation can actually be obtained, compared with the renowned algebraic methods which estimate distortion parameters explicitly.
