Abstract
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.
Highlights
The Quaternary Triangular Mesh (QTM) is an array of discrete grids
Zhao Xuesheng[2001] introduced the recursive refining approach, to determine spatial relation between two spherical objects is approached by recursive refine based on QTM hierarchical partition
QTM is an array of triangle grids, which are subdivided by an Octahedron
Summary
The Quaternary Triangular Mesh (QTM) is an array of discrete grids. In the partition of QTM, an octahedron is used as a basis. The speed of the real-time rend of the triangle grids is not satisfactory just by International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXVIII-4/W25, 2011 ISPRS Guilin 2011 Workshop, 20-21 October 2011, Guilin, China the number of triangle grids(hundred million) improving the level of the computer hardware devices. Spatial analysis and application based on QTM are depending on resolving the problem that improving the speed of the real-time rend of the triangle grids, that mean rending the globe fast and accurately by the way of the triangle grids. Building the partition model of multi-resolution LOD based on QTM, and decreasing the rending number of the triangle grids that are not in the interested area, are the effective way of improving the speed of the real-time rend of the triangle grids in the base of improving the accuracy that the triangles are subdivided base on QTM
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
