I. Introduction
Internet of Things (IoT) has emerged as a revolution for the development of futuristic network services and applications. It involves the connections not only among things but also human beings and things. How to mine valuable information from a large number of interactive data in the process of Human-Computer Interaction (HIC) has been widely concerned. As one of the most popular interactive methods, human gesture recognition plays an increasingly significant role. It can be widely applied in home automation, health surveillance, entertainment, security protection, and many other scenes.