David Demirdjian Konrad Tollmar Kimberle Koile Neal Checka Trevor Darrell Activity maps for location-aware computing. 70- 2002 conf/wacv/2002 WACV http://doi.ieeecomputersociety.org/10.1109/ACV.2002.1182159 db/conf/wacv/wacv2002.html#DemirdjianTKCD02