A unified approach to the recognition of complex actions from sequences of zone-crossings

作者：

Highlights：

• We present a method for the recognition of complex actions in a unified way.

• We encode simple action HMMs within the stochastic grammar that models complex actions.

• As input our method receives a sequence of crossings of tracks through a set of zones.

• We evaluate our method in a threat recognition setting.

摘要

•We present a method for the recognition of complex actions in a unified way.•We encode simple action HMMs within the stochastic grammar that models complex actions.•As input our method receives a sequence of crossings of tracks through a set of zones.•We evaluate our method in a threat recognition setting.

论文关键词：Threat recognition,Complex actions,Temporal relations,Multi-threaded parsing,Stochastic parsing

论文评审过程：Received 30 July 2013, Revised 16 January 2014, Accepted 13 February 2014, Available online 20 February 2014.

论文官网地址：https://doi.org/10.1016/j.imavis.2014.02.005