“…Human action recognition has been extensively studied in the literature and has already been incorporated into commercial products. There are a wide range of applications of human action recognition including human鈥搈achine interface, e.g., [1,2,3,4], intelligent surveillance, e.g., [5,6,7,8], content-based data retrieval, e.g., [9,10], and gaming, e.g., [11,12].…”