基于渐变方程的鱼眼图像校正方法

由于具有短焦距、大视场等特点,近年来鱼眼镜头被广泛应用于不同领域。但同时也存在鱼眼图像畸变较严重的问题,针对这一问题,提出了一种基于渐变方程和经纬映射模型的图像校正算法。利用经纬映射模型导出鱼眼图像中的相互关系,提取校正前后坐标的关系方程,然后引入渐变方程,实现图像校正。实验结果表明,该算法具有良好的校正效果。

Fisheye Image Correction Method Based on Gradient Equation

The fisheye lens is widely used in many fields because of the characteristics of short focus and wide field of view,but with serious image distortion.In order to solve this problem,we propose a correction algorithm of image gradient equation based on the latitude and longitude mapping model.The relationship between latitude and mapping model is derived,the equation between fisheye images before and after correction coordinates are extracted,and then the gradient equation is introduced for image correction.The experimental results show that the algorithm has good correction effect.