高分辨率卫星影像几何纠正精度的空间可视化  

Spatial Visualization of Image Geometric Rectification Accuracy on IKONOS Image

作　　者：刘春[1] 刘大杰[1] 王家林[2] 

机构地区：[1]同济大学测量与国土信息工程系,上海200092 [2]同济大学海洋与地球科学学院,上海200092

出　　处：《同济大学学报（自然科学版）》2004年第3期372-377,共6页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金资助项目 ( 40 1 71 0 78)

摘　　要：针对美国高分辨率卫星影像 (IKONOS)几何变形为主的特点 ,提出对几何纠正的精度采用空间可视化的方式来表达 .并以相似变换作为影像纠正的基本模型 ,推导了纠正后任意点精度与控制点精度的关系 ,基于此选择采用空间插值方法 ,插值影像纠正后任意点不同方向上的点位的精度 .在此基础上 ,采用精度可视化的概念对影像纠正的质量加以描述 ,通过一个IKONOS影像加密前后影像纠正的实例说明其应用的方法 。For the feature of the distortion of the IKONOS image s is mainly from the geometric,the technology of spatial visualization for the ac curacy determaination and the whole expression are put forward in this paper.So the conformal transformation model for the image rectification is taken as a b eginning to deduce the relation between the accuracy of an arbitrary point and t he accuracy of control points,besides,according to such relation,the inverse dis tance power method is used to give the spatial interpolation for the image rec tification accuracy,which also achieved the interpolation value in x or y directions.Based on above,the visualizations of accuracy are used to give the detail description of the quality of image rectification.The case IKONOS image is also adopted in this paper to give the explanation for the spatial visualizat ion of accuracy,and also some helpful conclusions are obtained for its availabil ity.

关 键 词：影像纠正 精度 空间可视化 空间插值 

分 类 号：P237[天文地球—摄影测量与遥感]