搜索结果: 16-30 共查到“地图设计与编绘”相关记录123条 . 查询时间(5.862 秒)
The estimation of accuracy of thematic maps derived from remotely sensed data used in conjunction with a geographic information system is presented. A systematic random sampling techique is proposed t...
Analysis of software requirements to represent urban areas with DEMs and 3D visualization of buildings and structures
DEM (Digital Elevation Models) Visualization of 3D DSM (Digital Surface Modeling)
2016/5/20
In order to have an integrated view of an urban area, it is necessary to show the terrain and the structures on it. There are many established computer programs that can do efficiently either task ind...
Virtual reality applications in the context of urban planning presume the acquisition of 3D urban models. Photo realism can only be achieved if the geometry of buildings is represented by a detailed a...
为实现移动机器人环境探知并直观表现的功能，设计一种以前方180°为范围的简单几何地图绘制系统。该系统采用lpc1768为核心，下位机部分以小型舵机MG90S和超声模块HC-SR04的云台组合为基础，上位机通过CVI编写的程序对下位机测量的数据进行处理，将其通过上位机界面以二维地图形式直观表现；并通过探测3种障碍地图进行验证。实验结果表明：该系统能准确反映机器人前方的环境信息，适用于移动机器人的实时...
Econova Flood Warning System: Geo-Information for Real Time Flood Risk Management
Hydrology Flood Forecasting Time Series Watershed Modeling
2015/12/18
Natural disasters engendered by climate change and global warming have created an unprecedented need for intervention from local governments. Recently, a US senatorial sub-committee on disaster predic...
Research on Spatial Database Model Under Grid Computing Environment
Grid Spatial Database Model Work Flow Simulation Experiment
2015/12/18
The paper firstly introduces grid technology and spatial database. Secondly it has designed the spatial database model in grid environment, which contains Application layer, Collective Layer and Fabri...
Digital Mapping Using Aerial Digital Camera Imagery
Aerial Digital Camera Photogrammetry Accuracy Analysis Mapping Digital Map
2015/12/17
Lately, photogrammetry using aerial digital camera has been utilized widely in the fields of a plan, development and management for a national land in advanced countries. There are various benefits us...
AJAX-Based Linkage of Databases for Location-Based-Services: the Online-Campus GIS of the University of Cologne
Internet/Web Navigation Orientation CAD Database Mobile
2015/12/17
This paper presents recent improvements of the CampusGIS of the University of Cologne (http://www.campusgis.de) which is designed, developed and established by the GIS & Remote Sensing research group ...
The Defined System of Map Symbol Based Geological Substances
Geometry Mapping System Standards Correlation
2015/12/16
At present the defined symbol of filling block, linear, surface based point, line and surface is a common visual method of Map Drawing Computer Software and Geographic information. In fact, the direct...
A Hybrid Method for Deriving DTMs from Urban DEMs
DEM/DTM urban aboveground correlation segmentation classification triangulation Random Markov Field
2015/12/8
This study focuses on the automatic extraction of DTMs from urban DEMs produced by image correlation. Many methods have been proposed in the literature yet processing correlation DEMs in any kind of a...
Rendering 3D Vector Data Using the Theory of Stencil Shadow Volume
Stencil Buffer Shadow Volume Vector Data Real-time Visualization Terrain Rendering
2015/12/2
In geographical information systems vector data has important applications in the analysis and management of virtual landscapes. Therefore, methods that allow combined visualization of terrain and geo...
Precision Analysis to 3D Reconstruction from Image Sequences
3D Reconstruction Precision Analysis Photogrammetry Multiple View Geometry
2015/10/12
The technology of 3D reconstruction based on image sequences is an important technology in computer vision field, its application
in close range photogrammetry area brings a new research area. For t...
Updating Algorithms for Constraint Delaunay TIN
Updating Algorithm Constraint Delaunay TIN Integral Ear Elimination Influence Domain Re-Triangulation Polymorphism
2015/10/12
Present algorithms for D-TIN are far insufficient for the dynamic updating of CD-TIN in different applications. This paper,
based on improvement to present insertion and deletion algorithms for D-TI...
Improvement of the Fidelity of 3D Architecture Modeling Combining 3D Vector Data and Uncalibrated Image Sequences
3D Modeling 3D Spatial Database Dynamic Visualization Uncalibrated Image Sequences Multiple View Geometry 3D Surface Reconstruction Trinocular Semi-Global Optimization
2015/10/12
The goal of this work is to create a system for improving large architectures models with relatively few uncalibrated image
sequences and produces interactively navigable and photorealistic 3D scene...
Building Reconstruction Using LIDAR Data
LIDAR Euler operators Delaunay Triangulation Voronoi Diagram
2015/10/12
City modelling in 3D is an important research topic, practically with more different survey technologies to provide and handle data.
In this paper, we introduce a new multi-stage process to produce a...