1. School of Electrical and Electronic Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore
2. Visual Computing Center King Abdullah University of Science and Technology Thuwal 23955‐6900 Kingdom of Saudi Arabia
3. School of Geophysics and Information Technology China University of Geosciences Beijing 100084 P. R. China
4. Shanghai Institute of Intelligent Electronics & Systems School of Microelectronics Fudan University Shanghai 200433 P. R. China
5. Key Laboratory of Education Ministry for Modern Design and Rotor‐Bearing System Xi'an Jiaotong University Xi'an 710049 P. R. China
6. School of Electronic Science and Engineering Xiamen University 422 Siming South Road Xiamen 361005 P. R. China