1. College of Information and Electrical Engineering, Shenyang Agricultural University, Shenyang, Liaoning, China
2. College of Computer Science and Technology, Inner Mongolia University for Nationalities, Tongliao, Inner Mongolia, China
3. Liaoning Engineering Research Center for Information Technology in Agriculture, Shenyang, Liaoning, China
4. School of Information Science and Engineering, Shenyang Ligong University, Shenyang, Liaoning, China