1. University of Lille, Inria, CNRS, Centrale Lille, UMR 9189 CRIStAL, F-59000 Lille, France
2. School of Mathematics and Big Data, Foshan University, Foshan 528000, China;
3. Khalifa University Center for Autonomous Robotic Systems, Khalifa University, Abu Dhabi 127788, United Arab Emirates