一种简单而精确的径向畸变标定方法 通过标准栅格，对摄像机拍摄的畸变图像进行空间位置校正，主要校正对机器时期视觉影像很大的径向畸变。-Through the standard grid, the distortion of the camera image space location of correction, the major correction during the visual images on the machine a lot of radial distortion.