无控制场的相机畸变差改正方法  

Approach for calibrating digital camera distortion based on non-control field

作　　者：丁昊[1,2] 谢文寒[2] 张继贤[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,北京100830

出　　处：《测绘科学》2012年第2期33-35,43,共4页Science of Surveying and Mapping

基　　金：国家自然科学基金资助项目(41001299);中国测绘科学研究院基本科研业务经费(77739)

摘　　要：本文提出并论证了一种无需控制场、仅应用影像线特征进行非量测相机畸变差测定的方法。分别运用三维室内和室外控制场、二维控制场和无控制场检校方法对Cannon-5d非量测相机的35 mm镜头进行畸变差测定,比较其影像纠正的效果。试验结果表明径向畸变在整个光学畸变中占据主要地位,四类检校方法测定的径向畸变差对影像的纠正效果接近,从而证明了利用无控制场相机畸变差改正方法进行非量测相机畸变差改正的可行性。This paper proposed and demonstrated an approach based on the vanishing point theory for calibration of non-metric camera lens distortion. Images in this paper were photographed by Cannon-Sd-35mm non-metric camera. The distortion correction by 3D control field, 2D Control field and non-control field method respectively were studied experimentally. The results showed that radial distortion plays an important role in optical distortion. The effects of radial distortion corrected by the above mentioned methods were close to one another, and also proved the feasibility of calibration of non-metric camera distortion based on non-control field.

关 键 词：无控制场 相机检校 畸变差 

分 类 号：P246.1[天文地球—测绘科学与技术]