Okihisa Utsumi Koichi Miura Ichiro Ide Shuichi Sakai Hidehiko Tanaka An object detection method for describing soccer games from video. 45-48 2002 ICME (1) http://dx.doi.org/10.1109/ICME.2002.1035714 conf/icmcs/2002-1 db/conf/icmcs/icme2002-1.html#UtsumiMIST02