电子学报2016，Vol.44Issue(12)：2894-2899,6.DOI:10.3969/j.issn.0372-2112.2016.12.012
基于地形高度域的数据压缩算法研究
Research on Terrain Height FieId Compression AIgorithm
摘要
Abstract
With the development of remote sensing technology,the size of terrain is growing rapidly,and far beyond the scope of main memory,has become an urgent problem.Data compression is a popular technology to increase system throughput.With the rapid development of GPU(Graphics Processing Unit)technology,the traditional compression algo-rithms cannot take full advantage of the ability of the current GPU.In this paper,we propose a GPU-based terrain data com-pression method,and achieve a high rate compression of terrain height field and location.Comparing to other algorithms,the main contribution of our algorithm is that the compression of terrain height filed and position is executed in the same time, and all the information of a node can be calculated according to the presentstrip.For terrain height domain,we firstly make Bezier curve approximation,then save the difference.After the steps above,we can achieve high compression ratio.By com-parison with traditional methods,we get reasonable experimental results.关键词
数据压缩/地形渲染/图形处理器Key words
data compression/terrain rendering/graphics processing unit (GPU)分类
信息技术与安全科学引用本文复制引用
翟锐,吕科,代双凤,潘卫国..基于地形高度域的数据压缩算法研究[J].电子学报,2016,44(12):2894-2899,6.基金项目
国家自然科学基金（No．61271435）；北京市自然科学基金重点项目 （）
