作者机构:[1]School of Compute Science and Technology, Shandong University, Jinan 250101, China, [2]Shandong Province Key Lab of Digital Media Technology, Shandong University of Finance and Economics, Jinan 250101, China
相关基金:supported by the National Nature Science Foundation of China (61020106001, 60903109,61103150). National Research Foundation for the Doctoral Program of Higher Education of China (20110131130004).