Changchun Institute of Optics;
Fine Mechanics and Physics;
Chinese Academy of Sciences;
Changchun 130033;
China;
University of Chinese Academy of Sciences;
Beijing 100049;
China;
State Key Laboratory of Precision Measuring Technology and Instruments;
Tianjin University;
Tianjin 300072;
China;
arc fitting; camera calibration; distortion correction; division model; field angle;