THE PARTITION OF MULTI-RESOLUTION LOD BASED ON QTM
- 1Department of Computer Science, Beijing Institute of Civil Engineering and Architecture, Beijing 100044 China
- 2China University of Mining and Technology in Beijing, Beijing 100083 China
- 3National Geomatics Center of China, Beijing 100044 China
Keywords: Spherical Surface QTM, Multi- Resolution LOD, Viewpoint
Abstract. The partition hierarch of Quaternary Triangular Mesh (QTM) determine the accuracy of spatial analysis and application based on QTM. In order to resolve the problem that the partition hierarch of QTM is limited by the level of the computer hardware, the new method that Multi- Resolution LOD (Level of Details) based on QTM will be discussed in this paper. This method can make the resolution of the cells varying with the viewpoint position by partitioning the cells of QTM, selecting the particular area according to the viewpoint; dealing with the cracks caused by different subdivisions, it satisfies the request of unlimited partition in part.