National Laboratory of Pattern Recognition Institute of Automation Chinese Academy of Sciences Beijing 100190 China;
University of Maryland-College Park Maryland USA;
Shenzhen VisuCA Key Lab Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen China;
National Laboratory of Pattern Recognition Institute of Automation Chinese Academy of Sciences Beijing 100190 China;
National Laboratory of Pattern Recognition Institute of Automation Chinese Academy of Sciences Beijing 100190 China;
local feature descriptor; triplet CNN; dense correspondence; geometry image; non-rigid shape;