一种基于斜率的摄像机畸变校正方法

普通 CCD摄像机在成像时都存在畸变成像误差 ,在机器人视觉检测及自动装配中 ,有效地进行误差校正对准确确定物体的位置具有重要的意义 .本文采用带有一阶径向畸变的小孔摄像机模型 ,提出一种基于线段斜率的方法 ,对摄像机镜头的径向畸变进行校正 ,不必标定太多的摄像机的外参数 ,方法简洁 ,适合于视觉系统中对摄像机畸变的实时校正 ,或对摄像机捕获的图像进行几何校正 .实验表明 ,具有很强的鲁棒性和较高的校正精度

Error Correction Method Based on Slope for Camera Radial Distortion

There is lens distortion when 3D object in apace is projected in 2D image with CCD camera. In several cases, the optics introduces image distortions that become evident at the periphery of the image, or even elsewhere using optics with large fields of view. It is necessary and important to correct the distortion in machine vision such as detecting robots in MIROSOT. Based on the pin hole camera modal with one order radial lens distortion, a image distortion correction method for radial lens distortion with segment slope is described in this paper. It needn't calculate too many parameters, which is different from other methods and makes it simple and rapid. In this paper, the pin hole camera modal with one order radial lens distortion is described at first, followed by the image distortion correction method based on segment slope. At last, both simulated image and real image are given to denote that this correction method is robust and accurate. This method makes it convenient for vision system to correct distortion real time, and can also be used to correct the distorted image captured by CCD camera.