一种应用于双目相机标定的三角形球标定物OA

In order to solve the problems of poor calibration accuracy and large calibration errors in the calibration of binocular cameras in practical applications,a triangular sphere calibration object that can be applied to binocular camera calibration is proposed.The calibration object uses a sphere as the calibration stereo and a triangle as the base element for binocular camera calibration.The internal and external param-eters as well as distortion parameters of the binocular camera are calculated through steps such as ellipse fitting,Cholesky decomposition,homography matrix solving,and nonlinear optimization.This method sim-plifies the correspondence between primitives and enables simultaneous calibration of multi viewpoint cam-eras.It is suitable for solving binocular camera parameters for two monocular cameras with different struc-tures,as well as for calibrating binocular cameras composed of two image sensors within the same struc-ture.Through experiments,it has been proven that the binocular camera using this calibration object out-performs traditional algorithms in terms of calibration accuracy,left and right camera calibration errors,and robustness.The comprehensive evaluation of the algorithm has been significantly improved.