中低分辨率遥感影像几何精校正  

Geometric precision correction of medium-low resolution images.

作　　者：吴露露[1,2] 罗旭[3] 张雁[4] 汪波[4] 冯仲科[1,2] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室 [2]北京林业大学测绘与3S技术中心 [3]中国计量科学研究院长度所 [4]建设部城乡规划管理中心信息处

出　　处：《北京林业大学学报》2008年第S1期78-82,共5页Journal of Beijing Forestry University

基　　金：农业科技成果转化资金项目(05EFN217100428)

摘　　要：该文旨在实现中低分辨率遥感影像的几何精校正,提出先配准后校正的方法;对于栅格影像图几何校正,自动配准控制点能实现栅格影像间的精校正。通过对Landsat TM遥感影像进行矢量地形图几何精校正实验表明,实行先配准后校正能较大地提高校正精度;对Landsat TM遥感影像进行中巴地球资源二号卫星(代号CBERS)的影像图作为参考影像的几何精校正实验表明,Erdas9.0软件的AutoSync模块能实现自动配准控制点,能对影像进行几何精校正。同时,校正的控制点具有可重新利用的属性。以上两种方法与控制点可重新利用的属性可应用到影像生产中。This paper discusses how to achieve image corrections.A method of registration-correction,i.e. correction after registration,is proposed.This method makes vector-map-based geometric conection of medium-low resolution images become reality.For grid-images-based geometric correction of medium-low resolution images,auto-registration can achieve precise correction.Two experiments were carried out.One is that a Landsat TM image was precisely corrected by vector topographic map using the registration-correction method;the other is that another Landsat TM image was precisely corrected using a CBERS image by the auto- registration method,using AutoSync module of Erdas9.0 software.Both experiments proved that the two precision corrections work well.Additionally,study also found that the control points are reusable.Both registration-correction and auto-registration can be applied in the image producing.

关 键 词：中低分辨率影像 几何校正 配准 LANDSAT TM AutoSync 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置]