网络摄像头的标定

摄像机定标是获取摄像机几何和光学参数的过程,也是获得摄像机在外部参考坐标系中的三维位置和面向.本文利用针孔模型对网络摄像头进行定标,该方法是基于标定物上已知参考点的三维坐标和参考点在图像上投影像素坐标之间对应关系,它分为两步,先利用线性模型对摄像机投影矩阵进行估计,然后基于投影矩阵分解出摄像机内外部参数.利用真实标定物图像进行实验和计算,得到较好的结果.

Web Camera Calibration

Camera Calibration is the process that allow to set numerical values for the geometrical and optical parameters of the camera and the external 3D position and orientation of the camera frame relative to an external coordinate system.In this paper,the web camera is been calibrated with pinhole-model.The method is based on the observation of an object for which the 3D coordinates of reference points are known,the projections of these points are measured in the image and yield pixel coordinates.The method can be thought of as a two-stage process: estimating camera project matrix using the linear model,and estimating the intrinsic and extrinsic parameters from project matrix.Finally,real calibration object image has been used to carry on the experiment and computation for the calibration parameter,and very good results have been obtained.