Bolei Xu, College of Computer Science and Technology, Zhejiang University of Technology; College of Information Engineering, Shenzhen University Jingxin Liu, College of Information Engineering, Shenzhen University; Histo Pathology Diagnostic Center, Shanghai Xianxu Hou, College of Information Engineering, Shenzhen University Bozhi Liu, College of Information Engineering, Shenzhen University Guoping Qiu, College of Information Engineering, Shenzhen University; School of Computer Science, The University of Nottingham