点类几何数据无损压缩算法的研究

The Questionnaire Inquired system＇s Exploration of the Mid-semester Teaching Quality

在对矢量图数据的存储特性进行深入研究的基础上,提出了综合运用通用无损数据压缩算法和几何压缩算法的两步压缩策略。根据矢量图数据中各几何图形要素的不同存储特点,特别是根据点类文件的特点,研究实现了有效的点类几何数据无损压缩算法。

Based on synthetically analysis of development status on the compression algorithm of the vector data and the universal lossless data,elaborates the principle and methods of lossless data compression comprehensively,analyses their advanrage and disadvantage.