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Dual-cache Structure Based Large Scale Texture Mapping for Real-time Terrain Rendering

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3 Author(s)
Dong Tian ; Image Processing and Pattern Recognition Laboratory, Beijing Normal University, Beijing 100875, P.R. China. tiandong@mail.bnu.edu.cn ; Xiaodong Wang ; Xin Zheng

There are two key problems in efficient large scale texture mapping for terrain rendering-efficient data organization and real time data updating in memory. In order to solve these problems, in this paper we propose a quadtree based indexing method to organize multi-resolution images and to fast retrieve data from disk; For memory updating, we present a real time dual-cache structure based updating method, which effectively reduces the frequency of data refresh. We also innovatively use a wavelet image enhancement algorithm to enhance original terrain texture, which obtain richer edge information and give us a more realistic effect in terrain rendering. Through the analysis of storage efficiency and rendering speed of our experiment, this dual-cache structure based method solves rendering speed and memory limit problems perfectly.

Published in:

2008 IEEE Conference on Robotics, Automation and Mechatronics

Date of Conference:

21-24 Sept. 2008