基于RAC标定法的CCD摄像机参数标定技术研究

传统的摄像机标定是在一定的摄像机模型下,基于特定的实验条件,如形状、尺寸已知的标定物,经过对其进行图像处理,求取摄像机模型的内部参数和外部参数。标定摄像机参数的方法很多,大多数采用变焦距法、径向准直法及根据透射成像原理进行标定,针对摄像机的像面中心的标定。文中建立CCD摄像机透视成像的数学模型,运用RAC标定法建立求解摄像机外部参数方程组,从而推导出在径向畸变模型下求解摄像机内部参数的方程。该方法采用CCD能很好地提高精度。实验结果表明,该方法计算量小,标定精度较高。

Research on camera parameter calibration CCD technology with calibration method based on RAC

The traditional camera calibration in certain camera model,based on the specific experimental conditions,such as shape,size of known calibration object,after the image processing,get the camera model of internal and external parameters.There are many methods to get camera calibration parameters,most of the zoom method,radial alignment method and according to the transmission principle of imaging for the camera calibration,the image plane center of calibration,this paper establishes the CCD camera perspective imaging model,use RAC calibration method was established for camera external parameters of equations,and derives the radial distortion model solving the equation of internal parameters of camera.The method uses CCD can well improve the precision,the experimental results show that,this method can achieve higher precision with relative less amount of calculation.