基于径向尺寸约束的CCD摄像机的标定实现

摘要

提出了基于径向尺寸约束的CCD摄像机图像模型参数的标定方法.利用Harris算法检测标定模板各角点图像坐标,稳定性和可靠性得到保证.基于径向尺寸约束原理,进行RAC(radial alignment constraint)两步法标定,提高了摄像机模型参数的标定精度.Matlab仿真表明所述方法标定精度高,显著降低了误差对标定的影响.%Based on the radial dimension constraint,this paper puts forward the CCD camera model parameters calibration method.The template angular point image coordinates are corrected by using the Harris algorithm,to ensure the stability and reliability.Based on the principle of radial dimension constraint,the image coordinates of each angular point are calibrated by using RAC (radial alignment constraint) two step method,to improve the accuracy of the calibration parameters of the camera model.Matlab simulation results show that this method has high calibration accuracy,significantly reduces the impact of errors on calibration.