Action Recognition of Sleeping at the Desk Using Regression on a Dependency Graph

In this paper, we present a hierarchical method of activity recognition for sleeping at the desk in business hall. The method consists of three steps. First, the reference points such as body joints are obtained from workers in business hall. Second, we build the dependency graph to represent the relationships between reference points. Third, the multidimensional output regressions along the dependency paths are used to estimate the positions of these reference body points. Experimental results demonstrate that our method achieves comparable accuracy to state-of-the-art results.