Abstract
A new two stage camera calibration based on Zhang Zhengyou method is proposed to solve the distortion of fish eye lens.Initial parameters are solved as a closed form solution,which are further refined by using non linear least square method,the extrinsic and intrinsic parameters are got,the robustness of initial value can be improved and the tangential distortion is taken into considertion.The proposed method compares with the Zhang's method converges fast and has anaccuracy of 1.2σ.
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