基于单位四元数的数码相机检校  

Digital camera calibration based on unit quaternion

作　　者：彭晓东[1,2] 林宗坚[2,1] 解斐斐[3] 

机构地区：[1]武汉大学遥感信息工程学院,武汉430079 [2]中国测绘科学研究院,北京100039 [3]山东科技大学,山东青岛266510

出　　处：《测绘科学》2009年第6期7-10,共4页Science of Surveying and Mapping

摘　　要：相机检校是航测工作中的基本组成部分,尤其在使用普通数码相机进行测量工作时,检校工作更为重要。本文将单位四元数引入共线方程进行空间后方交会,用单位四元数替代欧拉角,避免了三角函数运算的复杂性,也避免了三角函数存在奇异性的问题,同时也使得相机检校功能得到了扩展,在地面坐标与像空间坐标存在大旋转角的情况下,亦能正确地解决出相机内方位和畸变参数。Camera calibration is a basic component of photogrammetry, which becomes more important when general digital camera is employed by surveying workers. A new way of calibration was introduced, in which unit quaternion is introduced into collinear equation to solve space resection. Euler angle is replaced by quaternion. So, complicated trigonometric functions could be avoid, and also the singularity of trigonometric functions. At the same time, the function of camera calibration is expanded so that inner orientation and distortion parameters can be easily gotten even there were larger rotation angle between ground coordinate system and virtual photo coordinate.

关 键 词：四元数 相机检校 后方交会 普通数码相机. 

分 类 号：P231[天文地球—摄影测量与遥感]