10.1371/journal.pone.0106506.g007 Zhi-Ming Qian Zhi-Ming Qian Xi En Cheng Xi En Cheng Yan Qiu Chen Yan Qiu Chen Trajectory linking based on time and distance. Public Library of Science 2014 swarm behavior detection fish school method Track Multiple Fish Swimming fish head region problem 2014-09-10 03:08:33 Figure https://plos.figshare.com/articles/figure/_Trajectory_linking_based_on_time_and_distance_/1167006 <p>Trajectory linking based on time and distance.</p>