利用格网分块结构高效组织海量多波束水深数据，分别采用三种数学模型内插网格节点水深值，实现了不同网格尺度下的数据抽稀。
The proposed method organized bathymetric data utilizing grid block structure, interpolated depth at grid node adopting three mathematical models and thinned data with multi-scale grid.
文中就如何对规则格网数据所描述的区域通过二值化处理 ，运用八向邻域的有向判断策略 ，提出了一种获取描述区域矢量边界的算法。
This paper gives an algorithm of the acquisition of boundary vector of regions through a way of bi value processing and the directory judgement of the neighbouring domains in eight directions.
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