Multi-vision Oblique Photogrammetry System Calibration through the Combination of 2D Point and Line Control1
This paper presents our initial research on calibrating developed Multi-vision Oblique Photogrammetry System (MOPS). First, 2D point control from so-called Radial Alignment Constrain (RAC) by Tsai’s two-stage calibration is outlined and its potential issues to camera calibration accuracy are discussed as well. Second, we make well study on image radial distortion when principle point parameters are ignored and with perspective invariant of space line, one new radial distortion correctness algorithm is proposed based on 2D line control. Third, procedure of Tsai’s two-stage calibration is modified to corporate with proposed radial distortion correctness algorithm and new steps to calibrate digital cameras are summarized in detail. Finally, calibration test was implemented on selected digital camera Nikon P5100 by means of 2D chessboard as reference object. The comparison of proposed approach with Tsai’s two-stage calibration is also given in this paper and valuable conclusions are conducted as well.
Camera calibration Two-stage calibration RAC
Wu Jun Dong Zenglai Xu Gang1
1School of electronic engineering and automation, Guilin University of electronic technology,Guilin, 1School of electronic engineering and automation, Guilin University of electronic technology, Guilin
国际会议
桂林
英文
1-7
2011-11-01（万方平台首次上网日期，不代表论文的发表时间）