@inproceedings{AhmadDL2009, title = {Background Subtraction Based on Rank Constraint for Point Trajectories}, author = {Ahmad, A and Del Bue, A and Lima, P}, pages = {1-3}, month = oct, year = {2009}, doi = {}, url = {http://www.kyb.tuebingen.mpg.defileadmin/user_upload/files/publications/RecPad-2009-Ahmad.pdf}, month_numeric = {10} }