Institution: | a College of Information and Electrical Engineering, China Agricultural University, 100083 Beijing, China;b Institute of Agricultural Engineering, University of Kiel, 24098 Kiel, Germany;c Institute of Crop Science and Resource Conservation, University of Bonn, 53115 Bonn, Germany;d School of Technology, Beijing Forestry University, 100083 Beijing, China;e Department of Agricultural Engineering, University of Bonn, 53115 Bonn, Germany |