鱼眼镜头径向畸变的校正方法
发布时间：2018-10-05 16:45
【摘要】：针对鱼眼图像存在的径向畸变,提出了一种通过计算鱼眼镜头径向畸变函数来校正鱼眼图像的方法。首先,根据鱼眼镜头本身的特性运用Hough变换获取鱼眼图像的圆心以及校正半径;运用所提出的圆柱形棋盘格模版来完成径向畸变的标定,通过多项式拟合出鱼眼图像直径上采样点到圆心的距离和实际该采样点像点对应的物点所在视角之间的关系,从而将鱼眼图像恢复到球形投影面上;最后运用平面投影模型矫正出符合人类视觉感官的平面透视图像,并用一个圆柱形的投影面校正出了360°全景图。最后的实验结果证明了此方法的有效性。
[Abstract]:Aiming at the radial distortion of the fish-eye image, a method is proposed to correct the fish-eye image by calculating the radial distortion function of the fish-eye lens. First of all, according to the characteristics of the fish-eye lens itself, the center of the fish-eye image and the correction radius are obtained by Hough transform, and the radial distortion is calibrated by using the proposed cylindrical checkerboard template. The relation between the distance from the sampling point to the center of the circle on the fish-eye image diameter and the angle of view of the object point corresponding to the actual image point is fitted by polynomial, so that the fish-eye image can be restored to the spherical projection plane. Finally, the plane perspective image which accords with the human visual sense is corrected by the plane projection model, and the 360 掳panorama is corrected by a cylindrical projection plane. The experimental results show the effectiveness of the method.
【作者单位】： 北京信息科技大学自动化学院;
【基金】：国家自然科学基金(11672044,11172047)项目资助
【分类号】：TB851;TP391.41
本文编号：2254124
[Abstract]:Aiming at the radial distortion of the fish-eye image, a method is proposed to correct the fish-eye image by calculating the radial distortion function of the fish-eye lens. First of all, according to the characteristics of the fish-eye lens itself, the center of the fish-eye image and the correction radius are obtained by Hough transform, and the radial distortion is calibrated by using the proposed cylindrical checkerboard template. The relation between the distance from the sampling point to the center of the circle on the fish-eye image diameter and the angle of view of the object point corresponding to the actual image point is fitted by polynomial, so that the fish-eye image can be restored to the spherical projection plane. Finally, the plane perspective image which accords with the human visual sense is corrected by the plane projection model, and the 360 掳panorama is corrected by a cylindrical projection plane. The experimental results show the effectiveness of the method.
【作者单位】： 北京信息科技大学自动化学院;
【基金】：国家自然科学基金(11672044,11172047)项目资助
【分类号】：TB851;TP391.41
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