Pointwise Motion Image (PMI): A Novel Motion Representation and Its Applications to Abnormality Detection and Behavior Recognition.

Qiulei Dong Yihong Wu Zhanyi Hu Pointwise Motion Image (PMI): A Novel Motion Representation and Its Applications to Abnormality Detection and Behavior Recognition. 407-416 2009 19 IEEE Trans. Circuits Syst. Video Techn. 3 http://dx.doi.org/10.1109/TCSVT.2009.2013503 db/journals/tcsv/tcsv19.html#DongWH09