摘要
文章研究不同标准体系的地图矢量数据转换过程中的属性精度损失问题,指出转换过程中精度损失的具体环节包括编码转换、属性转换和属性重构等,通过语义转换方法的研究,确定可量化的和不确定的属性精度损失之间的关系,提出一种用于检验转换过程中属性精度损失的评估模型,通过实验分析该模型在不同数据量和数据转换难度的情况下所产生的结果,并证明该评估结果是可靠的。
This paper studied the attribute precision loss in the format conversion of map vector data under different standard systems. It found out that the concrete steps running into precision loss in the conversion process includes code converting, attribute converting and attribute re-building, confirmed the relationship between certain and uncertain attribute precision loss through the study on methods of semantic conversion, and put forward an evaluation model to check up on the attribute precision loss in conversion process. Finally, it analyzed the evaluation results under different data quantities and different conversion difficulties, and proved the reliability of the model.
出处
《测绘科学》
CSCD
北大核心
2014年第8期148-153,共6页
Science of Surveying and Mapping
关键词
矢量数据
格式转换
属性精度
评估模型
vector data
format conversion
attribute precision
evaluation model