8Shao Bin, Xin Hongwei. A real-time computer vision assessment Computers and Electronics in Agriculture, 2008, 62 (2) : 15 -21.
9Ahrendt P, Gregersen T, Karstoft H. Development of a real-time computer vision system for tracking loose-housed pigs [ J 1. Computers and Electronics in Agriculture, 2011 , 76 (2) : 169 - 174.