School of Computer Science Chengdu University of Information Technology Chengdu 610225 China;
School of Computer Science Chengdu University of Information Technology Chengdu 610225 China;
School of Computer Science University of Nottingham Jubilee Campus NG81BB UK;
School of Computer Science Chengdu University of Information Technology Chengdu 610225 China;
School of Computer Science Chengdu University of Information Technology Chengdu 610225 ChinaSchool of Information and Software Engineering University of Electronic Science and Technology of China Chengdu 610054 China;
School of Computer Science Chengdu University of Information Technology Chengdu 610225 China;
Detection; recognition; resnet; blstm; faster R-CNN; densenet;