1. Center for Machine Vision and Signal Analysis, University of Oulu,Oulu,Finland
2. Center for Ubiquitous Computing, University of Oulu,Oulu,Finland
3. Biomimetics and Intelligent Systems Group, University of Oulu,Oulu,Finland
4. Meteorological Institute,Helsinki,Finland
5. Cloud Computing Center, Chinese Academy of Sciences,Dongguan,China
6. Institute of Automation, Chinese Academy of Sciences,Beijing,China