5Ying X,Hu Z,Zha H.Fisheye lenses calibration using straight-line spherical perspective projection constraint[C] //ACCV,2006,Proc.of 7th Asian Conf.on Computer Vision.India:Hyderabad,ACCV,2006:591-600.
6Mundhenk T N,Rivett M 3,Liao X A.Techniques for fisheye lens calibration using a minimal number of measurements[C] //SPIE,2000,Proc.of Intelligent Robotics and Computer Vision Conference.Boston:SPIE,2000:181-190.
7Shishir shah, J K Aggarwal. Intrinsic parameter calibration procedure for a (high-distortion) fish-eye lens camera with distortion model and accuracy estimation [J]. pattern Recognition, 1996, 29 (11):1175～1178.
