You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.
3 November 2008A hierarchical visualization model of the global terrain based on QTM
A global multi-resolution digital elevation model (DEM) and a feasible solution for its visualization and management
remains a challenging vision. In this paper a multi-resolution DEM based on the ellipsoidal triangular meshes is made to
approximate to the earth surface. It was built through quaternary triangular mesh (QTM) hierarchical tessellation of the
ellipsoidal surface. In order to achieve fast access, we organize the global DEM data as a hierarchy of Diamonds and
indexing them based on the linear quadtree. Furthermore, a LOD is built through recursive subdivision of each
Diamond, and an approach of viewpoints-based data extraction based on the neighbor-Diamond searching from the
global DEM data is implemented for visualization. All this is backed with an implementation of a prototype computer
system.
Jian-jun Bai,Chao-de Yan, andXue-sheng Zhao
"A hierarchical visualization model of the global terrain based on QTM", Proc. SPIE 7143, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 714333 (3 November 2008); https://doi.org/10.1117/12.812644
The alert did not successfully save. Please try again later.
Jian-jun Bai, Chao-de Yan, Xue-sheng Zhao, "A hierarchical visualization model of the global terrain based on QTM," Proc. SPIE 7143, Geoinformatics 2008 and Joint Conference on GIS and Built Environment: Geo-Simulation and Virtual GIS Environments, 714333 (3 November 2008); https://doi.org/10.1117/12.812644