Fisheye Lenses Calibration Using Straight-Line Spherical Perspective Projection Constraint.

Xianghua Ying Zhanyi Hu Hongbin Zha Fisheye Lenses Calibration Using Straight-Line Spherical Perspective Projection Constraint. 61-70 2006 conf/accv/2006-2 ACCV (2) http://dx.doi.org/10.1007/11612704_7 db/conf/accv/accv2006-2.html#YingHZ06