实现了基于码书的运动检测，并有与其他的检测算法做对比，例如MOG，Bayes，三帧差分等。,Codebook based on the realization of the motion detection, as well as with other contrast detection algorithm, such as MOG, Bayes, differential, etc. 3.

bag-of-words by R. Fergus, L. Fei-Fei and A. Torralba