基于DEM的SPOT5遥感数据配准与镶嵌  

Based on DEM for Registration and Mosaic of Remote Sensing Data of SPOT5

作　　者：白潍铭 赵帅 姚畅 Bai Weiming;Zhao Shuai;Yao Chang(Henan Aero Geophysical Survey and Remote Sensing Center,Zhengzhou,Henan 45005)

机构地区：[1]河南省航空物探遥感中心,河南郑州450053

出　　处：《资源环境与工程》2018年第3期462-466,共5页Resources Environment & Engineering

摘　　要：由于SPOT5相邻两幅遥感影像重叠区域较少,尤其是在地形起伏较大的南半球地区,受地球自转影响较大,在两幅影像做配准与镶嵌时出现较大的几何误差,无法满足影像的处理与使用。通过基于自带地理坐标的两幅SPOT5影像直接镶嵌、基于配准后的影像镶嵌及基于DEM正射校正与配准相结合的影像镶嵌,探讨三种方式的镶嵌效果,并对镶嵌结果作精度评价。研究表明,利用DEM数据进行正射校正后再配准的镶嵌方法精度最高,基于配准后的影像镶嵌次之,基于地理坐标的镶嵌效果最差。因而在做两幅SPOT5影像数据镶嵌前体现出基于DEM正射校正的必要性,同时能够满足后续的各项影像处理与使用需求,也为以后在同类地区使用SPOT5进行数据处理提供借鉴。Because of the adjacent to two remote sensing images of SPOT5 whose overlap area is small,especially in the southern hemisphere region with great topographic relief,are greatly influenced by the earth＇s rotation,when two image registration and Mosaic,appear larger geometrical error,so can＇t meet the processing and use of the image. The paper through based on the geographic coordinates of the two SPOT5 images mosaic directly,based on image mosaic after registration and based on DEM ortho rectification combined with registration for image Mosaic,discusses three ways of mosaic effect and assesses the accuracy of the result of the mosaic. Study shows that the use of DEM data for ortho rectification after registration is the highest precision,based on registration method for image mosaic is second,and based on the geographic coordinates of Mosaic effect is the worst,so two SPOT5 images based on image masaic before more reflect based on DEM is the necessity of ortho-rectification,at the same time can satisfy the follow-up in all kinds of image processing and the use demand. It also provides reference for future use of SPOT5 data processing in similar areas.

关 键 词：DEM SPOT5 配准 镶嵌 南半球 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]