1. Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, Institutes of Physical Science and Information Technology, Anhui University, Hefei, China
2. School of Computer Science and Technology, Anhui University, Hefei, China
3. Key Laboratory of Intelligent Computing and Signal Processing of Ministry of Education, School of Artificial Intelligence, Anhui University, Hefei, China
4. Anhui Engineering Laboratory of Human–Robot Integration System and Intelligent Equipment, School of Electrical Engineering and Automation, Anhui University, Hefei, China
5. Faculty of Technology, Bielefeld University, Bielefeld, Germany