Department of Computer Science;
Jinan University;
Guangzhou 510632;
China;
State Key Lab of CAD&CG;
Zhejiang University;
Hangzhou 310000;
China;
Sino-French Joint Laboratory for Astrometry;
Dynamics and Space Science;
Jinan University;
Guangzhou 510632;
China;
techniques:image processing; methods:data analysis; astrometry;