TY - GEN
T1 - A seamless visualizaton model of the global terrain based on the QTM
AU - Zhao, Xuesheng
AU - Bai, Jianjun
AU - Chen, Jun
AU - Li, Zhilin
PY - 2006/12/1
Y1 - 2006/12/1
N2 - 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.
AB - 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.
KW - Adjacent index
KW - DEM
KW - Diamond
KW - QTM
KW - Visualization model
UR - http://www.scopus.com/inward/record.url?scp=77249087247&partnerID=8YFLogxK
U2 - 10.1007/11941354_118
DO - 10.1007/11941354_118
M3 - Conference article published in proceeding or book
SN - 3540497765
SN - 9783540497769
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 1136
EP - 1145
BT - Advances in Artificial Reality and Tele-Existence - 16th International Conference on Artificial Reality and Telexistence, ICAT 2006, Proceedings
T2 - 16th International Conference on Artificial Reality and Telexistence, ICAT 2006
Y2 - 29 November 2006 through 1 December 2006
ER -