光学精密工程2012，Vol.20Issue(3)：462-467,6.DOI:10.3788/OPE.20122003.0462
离轴三反时间延迟积分CCD相机内方位元素和畸变的标定
Calibration of inner orientation parameters and distortion for three-mirror off-axis TDICCD camera
摘要
Abstract
The stereo mapping precision of mapping cameras depends on the calibration precision of the geometric parameters, such as inner orientation parameters and distortion, therefore, a new calibration method of inner orientation parameters and distortion for a three-mirror off-axis Time Delay Integration(TDD CCD camera was proposed. The optical system and image plane stitching of the camera were introduced, and the meanings of the inner orientation parameters and distortion were defined. A calibration system and corresponding mathematical model were established, then the expressions of inner orientation parameters and distortion were settled by the least square poly-regress method. A calibration experiment was performed on the camera, and results show that the point calibration accuracy and the focal calibration accuracy are better than 1. 0 μm(1σ) and 2. 0 μm(1σ) , respectively. Moreover, the distortion calibration accuracy has been 2. 3 (um(la). Obtained results demonstrate that the calibration method has the advantages in the speed and efficiency for three-mirror off-axis TDICCD cameras.关键词
时间延迟积分CCD相机/离轴三反相机/内方位元素/畸变/标定Key words
Time Delay Integration (TDI) CCD camera/ three-mirror off-axis camera/ inner orientation parameter/ distortion/ calibration分类
航空航天引用本文复制引用
吴国栋..离轴三反时间延迟积分CCD相机内方位元素和畸变的标定[J].光学精密工程,2012,20(3):462-467,6.基金项目
国家自然科学基金资助项目(No.60575025) （No.60575025）
