基于World Wind矢量数据压缩的研究与实现  

The Research and Realization of Vector Data Compressing Based on World Wind

作　　者：马庆华[1,2,3] 郑逢斌[1] 乔保军[1,2,3] 王强[1] 沈亚田[1] 

机构地区：[1]河南大学数据与知识工程研究所,河南开封475001 [2]中国科学院遥感应用研究所,北京100101 [3]国家航天局航天遥感论证中心,北京100101

出　　处：《河南大学学报（自然科学版）》2009年第4期403-406,共4页Journal of Henan University:Natural Science

基　　金：国家863科技专项(2007AA04Z148);河南省科技厅重点科技攻关项目(0721022100)

摘　　要：矢量数据的压缩对于数据网络传输以及提高整个可视化系统的效率来说是一项很重要的工作.本文对现有曲线矢量数据压缩算法进行比较,着重分析了曲线矢量数据压缩的Douglas-Peucker算法及相关理论,给出了该算法的递归实现,并在World Wind环境中实现了Shape格式文件的快速显示.实验结果证明,经过压缩后的矢量数据兼顾存储空间和显示精度,提高了World Wind应用效率.Vector data compression for network transmission of data, as well as improving the overall efficiency of the visualization system is a very important task. This article is based on comparing the compression algorithms of existing curve vector data, focusing on the analysis of its Douglas-Peucker algorithm and related theories, finally, giving the method of recursive algorithm and realizing the rapid Shape format to display in World Wind environment. At the end, you can find it can improve the efficiency of the World Wind by both storage space and display precision after the compressed vector data .

关 键 词：World WIND Douglas—Peucker SHAPE文件 

分 类 号：TP317.4[自动化与计算机技术—计算机软件与理论]