Arnaud Le Troter Sébastien Mavromatis Jean Sequeira Soccer Field Detection in Video Images Using Color and Spatial Coherence. 265-272 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3212&spage=265 2004 conf/iciar/2004-2 ICIAR (2) db/conf/iciar/iciar2004-2.html#TroterMS04