轻小型组合宽角低空相机检校技术研究  

Study on Compact and Wide-angle Composite Digital Camera Calibration

作　　者：程亚慧[1] 林宗坚[2] 

机构地区：[1]山东科技大学,山东青岛266510 [2]中国测绘科学研究院,北京100039

出　　处：《北京测绘》2011年第4期19-21,4,共4页Beijing Surveying and Mapping

摘　　要：轻小型组合宽角低空相机由四个非量测的CCD面阵相机组合而成,其内方位元素未知,并且相机畸变差较大。而无人机航空摄影测量作业对CCD相机的光学畸变参数有较高的要求,因为参数的一个像素的误差常常会导致地面几米甚至数十米的误差,因此对组合相机进行高精度检校是无人机航空摄影测量作业的关键步骤。本文采用多片空间后方交会方法在室外三维检校场对轻小型组合宽角低空相机实施检校,内外方位元素的初始值用DLT方法解算,并利用标志点像点坐标差对相机检校结果进行评定,验证了检校成果的精确性和可靠性。The compact and wide-angle composite digital camera is composed by four non-metric CCD cameras,interior orientation elements is unknown,and distortion is great.UAV aerial photography jobs requires high precision CCD camera optical distortion parameters,because the parameters＇ a pixel errors often lead to errors in the ground a few meters or even tens of meters,so high precision calibration of combination camera is the Key step in UAV aerial photography jobs.In this text,applying space resection method calibrate the compact and wide-angle composite digital camera in outdoor three-dimensional control field,using DLT method to calculate the initial value of interior orientation elements,and using coordinate difference of image point to assess the resule of camera calibration,verified the accuracy and reliability of Calibration results.

关 键 词：轻小型组合宽角低空相机 空间后方交会 相机检校 内方位元素 畸变系数 

分 类 号：P236[天文地球—摄影测量与遥感]