Stereo Camera Calibration Based on Rectification Error
The process of stereo calibration is to determine the intrinsic parameters of each camera and the relative parameters between stereo cameras.It is an important stage in stereo reconstruction,the quality of calibration has a direct impact on the quality of reconstructed results.A new stereo calibration algorithm based on rectification error is presented here.The algorithm first calibrates intrinsic parameters of each camera by traditional method based on reprojection error,then,solves the relative parameters by using rectification error.Since rectification error can be calculated only by intrinsic parameters and relative parameters of the stereo cameras,the accuracy of stereo calibration can be improved by avoiding using camera extrinsic parameters which are difficult to be calibrated accurately.Experiments show the efficiency of the proposed method to improve the accuracy of stereo calibration.