1. College of Electronic Information Engineering, Changchun University, Changchun 130012, China
2. Jilin Provincial Key Laboratory of Human Health Status Identification Function & Enhancement, Changchun 130022, China
3. Key Laboratory of Intelligent Rehabilitation and Barrier-Free for the Disabled, Changchun University, Ministry of Education, Changchun 130012, China
4. College of Computer Science and Technology, Changchun University, Changchun 130022, China