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- 2018
顾及三维形态特征的河流曲线化简方法
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Abstract:
鉴于常规曲线化简方法应用于河流曲线化简时难以顾及河流要素的三维特征及其拓扑结构，提出了一种顾及三维形态特征的河流曲线化简方法。该方法利用河流曲线上散点的三维特征对散点进行选取进而实现河流曲线化简。在三维Douglas-Peucker（3D D-P）算法的基础上提出一种三维散点排队法，根据散点的三维特征对河流曲线的离散点集进行排队，并通过初始排队、"3合1"队列合并及约束点位置调整3个过程建立散点队列，然后根据压缩比从队列尾部删除相应比例的点数获得散点综合结果，将综合后的散点按照河流曲线的原始次序重构出化简后的河流曲线。实验结果表明，该方法既能最大程度地保留河流的三维形态特征，又能保证河流曲线之间的拓扑结构一致性
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