摘要
根据内视场拼接相机的构像原理,提出了一种单镜头多面阵CCD相机影像拼接处理的基本流程和方法。该方法涵盖了成像过程的影响,包括子影像相对位置自动确定、等效焦面影像拼合、数字像差检测和无畸变中心投影影像生成等技术环节。特别是建立了内视场拼接型数字航测相机几何特性描述模型,在包含了传统航测相机像差所顾及的焦距、主点坐标和物镜光学畸变等要素的基础上,扩展考虑了多面阵CCD不平行性误差和安装误差两项影响。试验结果表明,影像量测精度从1.5像元提高到0.3像元,系统误差降低了78%,验证了相关技术方法的有效性。
According to the geometric imaging principle of new type area mapping camera constructed by multi CCD in single field-of-view, the basic method of image geometric processing is proposed for surveying and mapping application. Based on the nature of comb-ined area camera, the digital image error is proposed, which includes the errors of focal length, principle point coordinate and optical distort etc, and the error of the size of area CCD and the camera assembly are considered, and the camera self-calibration is done by bun- dle adjustment, the effect of the quality on surveying and mapping can be deceased. The method is tested by aerial photogrammtry in Hanzhong field, and the effectiveness of the proposed method is validated by the test result.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2012年第8期906-910,999,共6页
Geomatics and Information Science of Wuhan University
基金
国家863计划资助项目(2008AA121203)
关键词
内视场拼接
面阵CCD相机
数字相机像差
自检校
系统几何处理
in-field-of-view vombined
area CCD camera
digital image error
self-calibra-tion
system geometric processing
