Automatic evaluation of sports skills has been an active research area. However, most of the
existing research focuses on low-level features such as movement speed and strength. In
this work, we propose a framework for automatic motion analysis and visualization, which
allows us to evaluate high-level skills such as the richness of actions, the flexibility of
transitions and the unpredictability of action patterns. The core of our framework is the
construction and visualization of the posture-based graph that focuses on the standard …