Dissertation > Excellent graduate degree dissertation topics show

The Management of Large-Scale Terrain DEM and Its Visualization Application

Author: HanYuanLi
Tutor: HuPeng
School: Wuhan University
Course: Map of the structure of the plan and Geographic Information Engineering
Keywords: Geographic Information Systems Terrain Visualization Digital Elevation Model Level of detail Multi-resolution
CLC: P208
Type: Master's thesis
Year: 2004
Downloads: 652
Quote: 7
Read: Download Dissertation

Abstract


3D terrain visualization and real-time rendering technology has always been a hot research field of geographic information systems , digital photogrammetry , virtual reality . According to the literature the algorithm to achieve the main purpose to build a complete 3D terrain visualization applications , enhanced three-dimensional visual effect , expand the three-dimensional analysis . Comprehensive analysis of the first data environment and data format for 3D visualization model Regular Grid DEM data of different format conversion, the resulting three-dimensional visualization of the data to form a The full set of the DEM data conversion , processing , inspection mechanism . Second , the article extension of three-dimensional visual effects , lighting effects and layered colored three-dimensional map effect , in addition to the original triangle mesh and texture maps . In this part , the detailed discussion of the different lighting effects the efficiency of the algorithm , and find a way to efficiently compute grid vertex normal way ; addition , the article also discusses the basic three - dimensional analysis backprojection transform process briefly discussed in the three-dimensional analysis of the role of the common three-dimensional analysis methods , as well as map algebra . Finally, 3D visualization model more reasonable single-layer multi- scale expression of realization mode , to discuss the form of its implementation as well as data organization : On the other hand , according to the authors ' understanding of the model , a comprehensive whole , open the application configuration architecture blueprint for subsequent software development support . Due to limited time , only partially implements the functional development of the 3D visualization applications , more features and application development is ongoing . In short, the purpose of this topic is the study of how to enhance the value of the three-dimensional visualization program .

Related Dissertations

  1. Mine water inrush investigation Risk Assessment,TD745
  2. GIS-based broadcasting wireless coverage in Qinghai Research Resource Management System,P208
  3. Based on MapInfo Land Information Space Control System Design and Implementation,TP311.52
  4. Study of the Method of 3G Integraty Technology Based on Google Earth,P208
  5. Study on Symbol Rate Estimation Algorithms of Communication Signals,TN911.23
  6. The Research and Realization of Ningbo Pollution Source Geographic Information System,P208
  7. Research of the Urban Netural Gas Pipeline Network Waring and Emergency System Based on GIS,P208
  8. Rapid and Efficient Regional Landslide Susceptibility Assessment Model Based GIS and RS Technology,P208;P237
  9. Dadu Dagangshan geological disasters remote sensing survey and evaluation,P694
  10. Study of Image and Video Segmentation Techniques,TP391.41
  11. To monitor alarm Command System design based on GPS , GIS, and fishing boats of the Inmarsat -D positioning,TP277
  12. Evaluation of Farmland Productivity Based on GIS Technology,S158.2
  13. The Application Research of GPS/GPRS Technology in the People’s Armed Police Combat Command Decision Support System,TN967.1
  14. Research and Implementation of City Public Transportation Query System Based on MapInfo,U491.17
  15. Finite Element Simulation for Valley Terrain in Hydraulic Engineering,TV221
  16. The Design and Implementation of Urban Flood Control Planning Information System Based on ArcGIS,TV87
  17. Research on Emergency Search and Rescue of Plateau Flight,V244.2
  18. Study on Methodology of Risk Assessment for Natural Gas Pipeline Network,TU996
  19. Study on 3D Visual Simulation for the Deformation Monitoring of Foundation Pit,TU196.1
  20. Research & Development of Short-term Load Forecasting on Distribution Network Based on GIS,TM715
  21. Resonant grounding system traveling wave fault line selection Positioning Method,TM862

CLC: > Astronomy,Earth Sciences > Surveying and Mapping > General issues > Mapping database and information system
© 2012 www.DissertationTopic.Net  Mobile