导航道路数据的渐进式压缩方法

Progressive data compression method for navigative roads

从高精度导航数据中自动过滤较低精度的导航数据,研究道路导航语义信息的提取方法,分析当道路导航数据降到5位精度时的一种渐进式道路数据压缩方法,不仅满足导航数据的精度要求,还保证道路的形状特征。实验结果表明,该方法的实用性较强,可满足导航道路数据压缩的要求。

Automatic extraction of lower precision navigation data are made from high precision navigation data involves in the compression of road data.Based on the analysis of navigation requirements under 5-bit precision conditions,this paper studies the extraction method of navigation semantic information on the road,and proposes a progressive road semantic compression method,which not only satisfies the accuracy requirements of navigation data,but also maintains the road’s shape feature.The experimental result shows that the method is functional and can meet the requirements of production units for navigation road data compression.