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Design and realization of 3D visualization system for real-time rendering of large-scale terrain

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3 Author(s)
Chen Chang-lin ; Inst. of Surveying & Mapping Inf. Eng., Univ. Zhengzhou, Zhengzhou, China ; Wei Hai-ping ; Zhai Jing-sheng

In order to achieve a regular-grid based, prospect -dependent 3D visualization system, this paper adopts Pyramid Model, and organizes the terrain data using Linear Quadtree. A method to compute the visible area and the best resolution for terrain is introduced in this paper, as well as an algorithm for predicting the data blocks. A new algorithm called as "Dynamic search algorithm for target blocks taking FPS into account", is brought forward in this paper. A 3D visualization system for large-scale terrain is realized by DirectX9.0 and Visual C#.NET, which achieved a good visual effect and a high and steady FPS just on PC platforms. The experimental result indicates that, the methods or algorithms presented in this paper can not only realize real-time rendering of large-scale terrain, but also can balance between the runtime efficiency and the display precision.

Published in:

Information Management and Engineering (ICIME), 2010 The 2nd IEEE International Conference on

Date of Conference:

16-18 April 2010