A seamless visualizaton model of the global terrain based on the QTM

Xuesheng Zhao, Jianjun Bai, Jun Chen, Zhilin Li

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

5 Citations (Scopus)


A seamless & adaptive visualization model of global DEM based on the QTM (Quaternary Triangular Mesh) is made to approximate to the Earth terrain in this paper. The approaches start with an Octahedron QTM partition based on the spherical surface. In order to improve the operation efficiency, the global DEM array points are organized as a hierarchy of Diamonds and the corresponding algorithms on indexing mechanism, coding scheme, and neighbor finding based on linear quadtree are given in details. Then, a dynamic operation method of the multi-resolution Diamond datasets in visualization is approached. Furthermore, an adaptive simplification rule of hierarchical triangles in Diamond data blocks is presented, in which an idea of the Binary Triangle Tree is introduced to form a continuous DEM mesh on the edges between different resolutions. In the end, the experiment and analysis are done with the GTOPO30 dada. The results is smoothly and receivable. Keywords: Visualization model, DEM, QTM, Diamond, Adjacent index.
Original languageEnglish
Title of host publicationAdvances in Artificial Reality and Tele-Existence - 16th International Conference on Artificial Reality and Telexistence, ICAT 2006, Proceedings
Number of pages10
Publication statusPublished - 1 Dec 2006
Event16th International Conference on Artificial Reality and Telexistence, ICAT 2006 - Hangzhou, China
Duration: 29 Nov 20061 Dec 2006

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume4282 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference16th International Conference on Artificial Reality and Telexistence, ICAT 2006


  • Adjacent index
  • DEM
  • Diamond
  • QTM
  • Visualization model

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)

Cite this