一种基于畸变等效曲面的图像畸变校正

An equivalent surface model of image distortion and the correction algorithm

介绍了一种图像畸变的等效曲面模型,用于修正由于光学系统或图像传感器产生的畸变。分析了球形畸变模型的原理,推导出基于球形模型的畸变校正公式,并给出了基于球形模型的畸变校正的具体实现方法,通过实验对这种畸变校正的效果进行了验证。这种曲面畸变模型的校正具有实现简单,不需求解方程组等优点,并可以推广到其他曲面,具有比较广泛的实用性。

An equivalent surface model of image distortion is presented. The Model can be used to correct the image distortion coming from the optical system or the image sensor. The principle of an equivalent surface model of image distortion is analyzed. The formulas of distortion correction based on the model are deduced. The algorithm and realizing method for distortion rectification based on the model are presented. The results of experiments to prove the effect of the correction are shown. This correction method of image distortion has great advantages that is easy to realize, doesn't need resolving the simultaneous equations, and this method can be extended to non-spherical surface. So the method presented can be widely applied.