基于有效区域自动判断的多幅遥感图像镶嵌方法

针对目前遥感图像镶嵌中存在的自动化程度低、接缝线去除效果差等问题,从有效区域出发对现有镶嵌技术进行改进。采用自动追踪法得到图像的有效区域,在此基础上进行多幅遥感图像镶嵌处理:在几何拼接阶段,用有效区域代替原始矩形图像参与图像拼接;在拼接缝消除阶段,用有效区域确定两幅图像的拼接线,采取整体色调调整和重叠区加权两个步骤消除接缝线;在多幅图像镶嵌时,对两幅待镶嵌图像的有效区域求并集,即是结果图像的有效区域,参与下一次的镶嵌计算。通过两组多幅遥感图像的镶嵌实验表明,该技术流程可以实现全自动的多幅图像匀光,处理后图像整体色调一致,不存在明显接缝线。     

不同时相遥感图像的镶嵌技术

本文介绍针对不同时相遥感图像镶嵌中的技术难题开发的一整套数字镶嵌方法。采用递推式灰度调整、滑动窗口探测最佳拼接点及对其两侧作加权灰度圆滑方法, 以消除被镶嵌图像之间因色调差异造成的接缝；采用在相邻图像重叠区内选取控制点并按控制点追踪进行镶嵌方法, 以提高镶嵌的几何精度；还采取了单元镶嵌法, 以解决遥感图像数据量庞大而计算机容量有限的矛盾。用上述技术和作者开发的相应软件, 成功地制作了长江中下游等多个地区的TM影像镶嵌图, 受到应用人员好评。     

遥感构造蚀变异常信息提取及找矿预测——以老挝为例

遥感地质异常信息提取是遥感地质学的重要研究内容之一.以老挝为例,对研究区ETM+遥感图像采用几何纠正、图像镶嵌、彩色合成、空间变换、图像增强等技术手段,提取地质构造信息;利用掩模技术去除干扰信息,采用主成分分析和阈值分割技术进行铁染和羟基蚀变异常信息提取;结合区域地质、地球物理、地球化学等多元地学信息综合分析,开展研究区遥感找矿预测,圈定了5处遥感找矿远景区.研究成果为加快老挝地质找矿工作提供了基础数据和决策依据.     

基于OLI影像植被覆盖度估算探索

选取Landsat8获取的4幅OLI遥感影像,在ENVI5.1遥感图像处理软件中,对影像进行辐射定标、FLAASH大气校正、图像镶嵌等一系列预处理后,利用基于NDVI的像元二分模型,推算出植被覆盖度(FVC)。依据FVC的不同进行密度切割、分层设色,得到该区域的植被覆盖度图。该获取大区域植被覆盖度图的工作方案简单易行,为遥感影像实现区域植被覆盖度动态研究提供了参考。     

TM图像的大地校正及其镶嵌方法研究

大地校正和数字图像镶嵌是应用遥感图像进行资源环境监测工作的基础,其精度的高低将对后续工作产生直接影响。基于经过系统校正的TM图像内部几何精度高的前提,本文提出一种快速实用的大地校正及图像镶嵌方法,该方法避免了传统方法在应用控制点建立拟合方程时耗时长的缺点,保证了TM镶嵌图像的几何精度.     

大区域数字图像的镶嵌设计与方法

本文详细论述了大区域遥感图像的数字镶嵌设计思想,提出了分区加大重叠的镶嵌方法,并 讨论了色调与反差匹配、几何配准和选择最佳匹配区域等问题。为了完善计算机图像镶嵌技术, 本文还提出了消除镶嵌接缝的加权平均调整灰度的方法。     

航空遥感图像镶嵌研究

以地形和土地利用类型丰富多样的地区为6例,用PCI Geomatica V8.2.0遥感图像处理软件对航空遥感图像进行镶嵌处理。采用了以经过几何校正的该地区卫星图像为基础,在对未经校正的航空图像进行纠正的同时进行镶嵌,该方法简单方便;在色调调整时采用了算法相对复杂的立方卷积内插法,获得了较好的图像质量。     

基于SIFT的遥感图像配准技术综述

遥感图像配准是图像融合、变化检测、图像镶嵌等应用中不可缺少的步骤。近年来,出现了大量基于尺度不变特征变换(scale invariant feature transform,SIFT)的遥感图像配准方法。在对已有基于SIFT的遥感图像配准文献的调研分析基础上,对各种SIFT遥感图像配准技术进行了系统性评述,将各种改进方法分为SIFT提升算法、针对遥感图像性质的改进、混合方法以及针对算法流程的改进等4类;分析了不同类型改进方法的适用范围和优缺点;指出了SIFT遥感图像配准技术存在的主要问题和难点,对其未来的发展方向进行了展望,为后续研究提供参考。     

基于面向对象的高分遥感景观格局提取方法

为了实现对景观连续变化特征与连接特征的描述,并保持与斑块镶嵌特征的空间尺度一致性,该文利用高分辨率遥感数据,采用面向对象分割方法,建立基于Delaunay-Voronoi原理的景观格局定量描述模型,统一表达景观格局的镶嵌、连续以及连接特征;并将此图像分割方法的结果与像素聚合方法的结果进行对比。结果表明:1面向对象的图像分割方法能够更好地保存对景观格局提取至关重要的微细景观特征,并在尺度上推过程中延缓这些细微特征消失;2基于Delaunay-Voronoi数据结构的景观格局模型有利于面向对象影像分析的景观镶嵌、连续和连接特征的混合及其多尺度表达,更适用于高分辨率遥感景观格局信息提取。     

SPOT5数据在西昆仑麻扎构造混杂岩带填图中的应用

为了加强高精度遥感图像数据在新疆西昆仑等自然地理条件极其恶劣的高海拔、艰险地区数字填图中的应用,提高填图的精度及质量,以麻扎构造混杂岩带填图为例,运用遥感图像预处理(大气校正、几何纠正、影像镶嵌、影像融合、影像裁剪、正射纠正等)、遥感图像增强处理(比值法、主成分分析法等)和地质信息综合分析等方法提取岩石、地层、构造等地质信息,并指导区域地质调查野外工作的开展;总结了SPOT5高精度图像数据在数字填图中的应用方法和效果,认为遥感技术在区域地质调查中起着事半功倍的作用。利用高精度遥感图像数据不仅提高了地质体(特别是构造混杂岩块)边界范围的勾绘精度,对部分非正式填图单位的勾绘也取得一定的成效。     

资源环境与城乡规划管理专业《遥感》课程教学探讨

针对资源环境与城乡规划管理专业中《遥感》课程教学存在的问题,从理论、实验和应用3个方面,探讨了该课程的教学内容和方法,以期对非地理空间信息专业遥感知识的学习起到促进作用。     

XVth INTERNATIONAL CONGRESS OF PHOTOGRAMMETRY AND REMOTE SENSING

The XVth International Congress of Photogrammetry and Remote Sensing, organised by the International Society for Photogrammetry and Remote Sensing, was held at Rio Centro. Rio de Janeiro from 17th to 29th June, 1984. Reports on the activities of the seven technical Commissions as well as on the Exhibition and the General Assembly were given to a meeting of the Photogrammetric Society on 16th October, 1984. Papers were published in the International Archives of Photogrammetry and Remote Sensing 25.     

我国灾害遥感的作用、现状及发展

本文从现代遥感技术系统的构成和特点出发,论述了遥感在减灾活动,包括预警、监测、评价和辅助决策中的重要作用。并在回顾我国灾害遥感现状的基础上,提出了今后发展的设想。作者认为:建立实用性的重大自然灾害遥感监测评价技术系统,是今后我国灾害遥感发展的中心环节和主要任务。该系统应包括航天遥感宏观监测系统,航空遥感全天候、实时监测系统,地面灾害及背景监测系统,灾害及背景数据库系统,灾害分析、评价与辅助决策系统以及灾害防治救援通讯指挥系统。     

Mapping needs of urban and regional planners some solutions

To tackle problems arising due to rapid urbanisation, the physical planners need up-to-date large scale maps. Since preparation of such maps by conventional methods is time consuming and therefore, not suited to the present situation, introduction of new technology is imperative. Application of Remote Sensing Data Products, mainly Aerial Remote Sensing, is an alternative. Aerial photographs in the form of PHOTO MAPS can be used as map substitutes, as well as basis for extraction of lot of physical data by interpretation to study various physical aspects of urbanisation and expansion. As a step further, computer-aided techniques with appropriate HARDWARE/SOFTWARE Systems like MASMAP, can further simplify and expedite the procedure, especially in the case of spontaneous settlements. The present paper discusses, these problems and in the light of the experience gained at IIRS, suggests some solutions.     

Xixth International Congress of Photogrammetry and Remote Sensing

The XIXth International Congress of Photogrammetry and Remote Sensing was held at the Amsterdam RAI International Exhibition and Congress Centre, the Netherlands, from 16th to 23rd July 2000. Reports are given on the Congress as a whole, including the General Assembly, some Technical Commission activities and the Congress Exhibition. Papers from the Congress are published in the International Archives of Photogrammetry and Remote Sensing, 33.     

Xxth International Congress of Photogrammetry and Remote Sensing

The XXth International Congress of Photogrammetry and Remote Sensing was held at the Istanbul Convention and Exhibition Centre (ICEC), Turkey, from 12th to 23rd July 2004. Reports are given on the Congress as a whole, including the General Assembly, some Technical Commission activities and the Congress Exhibition. Papers from the Congress are published in Volume XXXV of the International Archives of Photogrammetry, Remote Sensing and Spatial Information Sciences.     

XVIth INTERNATIONAL CONGRESS OF PHOTOGRAMMETRY AND REMOTE SENSING

The XVIth International Congress of Photogrammetry and Remote Sensing, organised by the International Society for Photogrammetry and Remote Sensing, was held in the Kyoto International Conference Hall from 1st to 10th July, 1988. The activities of the seven technical commissions of ISPRS were described at a meeting of the Photogrammetric Society on 18th October, 1988. The meeting also heard about the Congress Exhibition and the deliberations of the General Assembly during the Congress. Papers from the Congress were published in the International Archives of Photogrammetry and Remote Sensing 27.     

XXIst International Congress of Photogrammetry and Remote Sensing

The XXIst International Congress of Photogrammetry and Remote Sensing was held at the Beijing International Convention Centre, China, from 3rd to 11th July 2008. Reports are given on the Congress as a whole, including the General Assembly, some Technical Commission activities and the Congress Exhibition. Papers from the Congress are published in Volume XXXVII of the International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences.     

面向数字城市的遥感数据挖掘及应用

探讨了面向数字城市的遥感数据挖掘的优越性和潜在效能,在分析遥感数据特点和国内外研究现状的基础上,分析了遥感数据挖掘的基本方法与挖掘流程,提出一个数字城市遥感数据挖掘平台的原型系统设计方案,最后结合城市可持续发展、城市规划管理等方面的需求对遥感数据挖掘在数字城市中的应用进行了展望。     

Catalogs of space shuttle earth observations photography

Design and development of Indian Remote Sensing Satellite, IRS‐1A and the successful operation of the space and ground segments of IRS‐1A over the past three years form a major milestone in the Indian Remote Sensing Programme. Significant growth in Remote Sensing application/activities in almost all the sectors of natural resources survey and management, supply of various remote sensing data products to Indian users in turn around time of 8–10 days, development of remote sensing infrastructure at central/state user organisations for utilisation of remote sensing, indigenous development of various remote sensing interpretation equipments/ Image Processing Systems /Software, and continued user interaction and information dissemination are some of the major highlights of the Indian Remote Sensing Programme.