共查询到20条相似文献,搜索用时 125 毫秒
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空白真正射纠正影像的生成是基于DSM 制作真正射影像的最重要的一部分,是进行正射纠正读取原始图像数据进行内定向和相对定向后首先要解决的问题。本文以VC++中M FC为开发平台利用仿射变换,实现影像内定向;然后利用共线方程,解决像素坐标、像平面坐标和地面点坐标之间的相互转化,为利用数字微分纠正技术进行影像的真正射纠正的灰度赋值做好了准备。 相似文献
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公交车搭乘是武汉市市民日常出行的主要手段之一。合理的公交搭乘方案能够减少市民出行在时间和精力方面的损耗,本文以武汉市道路网为基础,阐述了通过ArcGIS进行公交网络数据模型构建的过程,并利用VisualC++和Map Objects实现了公交简易查询系统的开发。 相似文献
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TEQC数据质量检查和界面开发 总被引:2,自引:2,他引:0
TEQC被广泛地应用于大地型GPS接收机的观测数据数据预处理,可以对观测数据进行转换、编辑和质量检查,因TEQC最初是面向Unix系统,使用borlandC语言开发,因其交互性差,对其界面利用VC++进行开发。 相似文献
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以武汉市地图数据为实验数据,阐述了应用Visual C^++平台建立空间数据组织与管理系统的技术路线,说明了系统的数据格式,论述了数据结构与程序实现、建立空间索引等关键技术。 相似文献
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以数字化地籍测量成果为基础,在Windows环境下,采用Borland C++编程,建立了城镇土地利用现状浏览系统,可以快速、灵活地浏览测区内街道和街坊的行政区划、街坊内的土地利用现状,以及指定宗地的属性信息。 相似文献
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基于ArcEngine与OGR库的Shapefiles文件到KML格式转换方法研究 总被引:1,自引:0,他引:1
Google Earth的问世,给GIS行业注入了新的活力,但对GIS的核心和重要功能--空间分析的支持几乎为零.本文首先使用ArcGIS Engine实现了Shapefiles文件的缓冲区分析功能,然后通过ArcGIS Engine和OGR库把缓冲区分析结果的Shapefiles文件转换为KML格式,从而将缓冲区分析的结果在Google Earth中显示出来,间接地增强了Google Earth缓冲区分析的功能. 相似文献
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提出了一种基于XML的分布式空间数据建模及可视化表达的描述语言——分布式空间数据标记语言(DSDML);讨论了DSDML的应用框架、功能、语法规则,基于SAX模型实现了DSDML的解析器,并在Google Earth和GeoGlobe上进行了实验,实现了DSDML与Google Earth或GeoGlobe的无缝集成。 相似文献
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Integrating data on health outcomes with methods of disease mapping and spatially explicit models of environmental contaminants are important aspects of environmental health surveillance. In this article, we describe a modular, web‐based spatial analysis system that uses GIS, spatial analysis methods and software services delivered over computer networks to achieve this end. The Environmental Health Surveillance System (EHSS) is a prototype system that is designed to serve three purposes: a secure environment for producing maps of disease outcomes from individual‐level data while preserving privacy; an automated process of linking environmental data, environmental models, and GIS tasks like geocoding for the purposes of estimating individual exposures to environmental contaminants; and mechanisms to visualize the spatial patterns of disease outcomes via Web‐based mapping interfaces and interactive tools like Google Earth. 相似文献
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随着3维GIS技术日益完善,使我们能够构建近于现实的房地产3维模型,它不仅能反映房地产的位置和空间信息,还能进行3维空间的查询和分析,可用于房地产规划决策、建设和交易管理。本文将以Google Earth的GIS平台和数字城区的虚拟漫游系统为基础结合3维建模基本理论对房产信息系统进行全新的设计。 相似文献
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《International Journal of Digital Earth》2013,6(9):995-1012
ABSTRACTEarth observation (EO) data, such as high-resolution satellite imagery or LiDAR, has become one primary source for forests Aboveground Biomass (AGB) mapping and estimation. However, managing and analyzing the large amount of globally or locally available EO data remains a great challenge. The Google Earth Engine (GEE), which leverages cloud-computing services to provide powerful capabilities on the management and rapid analysis of various types of EO data, has appeared as an inestimable tool to address this challenge. In this paper, we present a scalable cyberinfrastructure for on-the-fly AGB estimation, statistics, and visualization over a large spatial extent. This cyberinfrastructure integrates state-of-the-art cloud computing applications, including GEE, Fusion Tables, and the Google Cloud Platform (GCP), to establish a scalable, highly extendable, and high-performance analysis environment. Two experiments were designed to demonstrate its superiority in performance over the traditional desktop environment and its scalability in processing complex workflows. In addition, a web portal was developed to integrate the cyberinfrastructure with some visualization tools (e.g. Google Maps, Highcharts) to provide a Graphical User Interfaces (GUI) and online visualization for both general public and geospatial researchers. 相似文献