大视场面阵数字航摄仪检测关键技术探讨  

Discussion on key technology of large visual field array CCD digital aerial camera calibration

作　　者：肖海红[1] 王成龙[2,3] 韩菲[4] 

机构地区：[1]河南工程学院土木工程学院,郑州451191 [2]中国测绘科学研究院,北京100830 [3]北京四维远见信息技术有限公司,北京100070 [4]国家测绘地理信息局大地测量数据处理中心,西安710054

出　　处：《测绘科学》2015年第9期129-133,共5页Science of Surveying and Mapping

基　　金：民用航天技术预先研究项目(E0306);测绘地理信息公益性行业科研专项项目(201412020)

摘　　要：针对常规室内检校场无法满足大视场面阵数字航摄仪检测的问题,文章提出了一种适合此类航摄仪检校的野外检校场的建立方法,通过对检校场控制点布设方案设计、适合影像识别的地标形状设计和地标点三维坐标的精确测定方案研究,实现了检测场内控制点的高精度测量:建立适合大面阵数字航空摄影仪几何误差改正的数学模型,并通过多摄站拍摄足够数量的检校场影像,自动识别并测定每幅影像上全部地标点的影像坐标,用最小二乘平差计算间接求出相机的内方位元素和各项畸变参数,最后通过多组检测参数对比,验证了数学模型及其参数的可靠性与稳定性。Aiming at the problem that it is difficult for conventional indoor calibration field to meet the demand on large visual field array CCD digital aerial camera calibration, this paper proposed an establishing method for field calibration yard suitable for such aerial cameras. The high-precise measurement of the control points in the calibration field was achieved through the study on the layout scheme design of the calibration field control points, the landmarks design suitable for image recognition and the accurate measurement of the landmark point＇s three-dimensional coordinates： the mathematical model of geometric error correction suitable for large area array digital aerial camera was established, and the sufficient number of the calibration field digital images were taken by multicamera stations, in order to automatically identify and measure the image coordinates of all landmark points for each image, and the camera orientation elements and distortion parameters were calculated indirectly with least squares adjustment. Finally, the reliability of the model was validated through the comparison between the tested parameters.

关 键 词：面阵CCD 检测场 几何改正模型 内方位元素 

分 类 号：P246[天文地球—测绘科学与技术]