Xinguo Yu Nianjuan Jiang Loong Fah Cheong Accurate and Stable Camera Calibration of Broadcast Tennis Video. 93-96 2007 ICIP (3) http://dx.doi.org/10.1109/ICIP.2007.4379254 conf/icip/2007 db/conf/icip/icip2007-3.html#YuJC07