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Received:December 12, 2000 Revised:February 15, 2001
Received:December 12, 2000 Revised:February 15, 2001
Abstract:In this paper, a mechanism of implementing visualization with level of detail (LoD) at multi-scale is proposed on spatial database. Based on the spatial index V-Reactive tree, different LoDs can be represented, at the same time generalization at multi-scale can be implemented. Furthermore, the perspective query algorithm can decrease the complexity of implementing the mechanism. According to the characteristics of 3D visualization, the index tree is optimized for better image quality. The experimental results show that the mechanism is fit for 3D GIS applications with mass data.
Foundation items:
Author Name | Affiliation |
LI Jun | 国防科学技术大学,电子科学与工程学院,湖南,长沙,410073 |
JING Ning | 国防科学技术大学,电子科学与工程学院,湖南,长沙,410073 |
SUN Mao-yin | 国防科学技术大学,电子科学与工程学院,湖南,长沙,410073 |
Reference text:
LI Jun,JING Ning,SUN Mao-yin.A Mechanism of Implementing Visualization with Level of Detail at Multi-Scale.Journal of Software,2002,13(10):2037-2043
LI Jun,JING Ning,SUN Mao-yin.A Mechanism of Implementing Visualization with Level of Detail at Multi-Scale.Journal of Software,2002,13(10):2037-2043