Aiming at the high precision image needed in the special application scene of linear array camera,the linear array cam-era is calibrated with high precision.A calibration method for bilinear array cameras based on beam adjustment is proposed.The pixel coordinates of feature points of linear array camera are obtained by the background difference method.The existing direct linear trans-formation and nonlinear optimization methods are used to obtain the internal parameters,external parameters and distortion parame-ters of the camera,and the initial parameters and world coordinates are taken as the set to be optimized.The LM and beam adjust-ment methods are used to further optimize the set,so that the reprojection error of the bilinear array system is minimized.The experi-mental results show that compared with the traditional linear array camera calibration method,the reprojection error of the proposed method reduces 75.01％.
关键词
线阵相机/视觉标定/光束法平差/重投影误差
Key words
linear array camera/visual calibration/beam adjustment/reprojection error
维普
万方数据