Yang Mi Lihang Liu Weiyao Lin Weiyue Wang 0002 Extracting Recurrent Motion Flows from Crowded Scene Videos: A Coherent Motion-Based Approach. 371-376 2015 BigMM https://doi.org/10.1109/BigMM.2015.20 https://doi.ieeecomputersociety.org/10.1109/BigMM.2015.20 conf/bigmm/2015 db/conf/bigmm/bigmm2015.html#MiLLW15