摘要
分析了网格索引的优缺点以及Bresenham等方法用于线状目标网格索引生成存在的问题,在此基础上提出了一种改进的网格索引生成方法,此方法避免了在生成网格索引时遗漏目标覆盖的网格格子,并可提高选择目标的精度。
This paper analyzed the defects and merits of grid spatial index and the problem existing in building up grid spatial index with Bresenham and other methods, offered an improved method of building up grid index.With this method we can avoid skipping over grids covered by objects in building up grid spatial index, and improve selection precision.
出处
《测绘科学》
CSCD
2004年第6期85-87,78,共4页
Science of Surveying and Mapping
