?url_ver=Z39.88-2004&rft_id=10.1109%2FICIAS.2016.7824064&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Kajo&rft.au=Kajo%2C+I.&rft.aufirst=I.&rft.date=2017&rft.title=An+evaluation+of+optical+flow+algorithms+for+crowd+analytics+in+surveillance+system&rft.isbn=9781509008452&rft.genre=proceeding