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-  2016 

基于扇形筛选法的矢量数据压缩方法
Method of Vector Data Compression Based on Sector Screening

DOI: 10.13203/j.whugis20140225

Keywords: 矢量地图数据,时间效率,预测算法,扇形筛选法,Douglas-Peucker算法,
vector data map
,time efficiency,prediction algorithm,sector screening,Douglas-Peucker algorithm

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Abstract:

针对具有预测功能的矢量数据压缩方法效率低下的问题,提出一种基于扇形筛选法的矢量数据压缩方法。在预测区域内利用扇形筛选法,能显著减少待选点,从而提高压缩效率。实验结果证明,该方法的效率与改进前方法相比提升了30%~40%。此外,与传统的Douglas-Peucker算法相比,该方法在相同阈值下可以得到更大的压缩比,且在较小阈值下具有更高的计算效率

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