基于语义认知的地形建模

发布时间：2018-04-05 19:39

本文选题：地形建模　切入点：地形语义　出处：《测绘科学》2017年03期

【摘要】：针对当前地形建模注重渐变地形与地形几何特征(点、线)的表达,缺乏从整体形态上对地形的描述,该文提出将语义信息引入地形建模的方法。从地形建模的认知过程出发,引入"地形语义"描述地形的整体特征,剖析了地形语义的特点,实现了地形语义的形式化表达,设计了语义参与的建模流程,建立原型系统进行了实验。实验表明,地形语义信息作为数据源参与的地形建模能够保留一个地形区域的语义特征,提高了DEM的保真度,该方法进一步拓宽了地形建模数据源,为地形建模及其应用提供了新的思路与方法。
[Abstract]:In view of the fact that the present terrain modeling focuses on the representation of the gradual terrain and the geometric features (points and lines) of the terrain and lacks the description of the terrain from the whole form, this paper proposes a method of introducing semantic information into the terrain modeling.Starting from the cognitive process of terrain modeling, this paper introduces "terrain semantics" to describe the overall features of terrain, analyzes the characteristics of terrain semantics, realizes the formal expression of terrain semantics, and designs the modeling process of semantic participation.The prototype system was established and the experiment was carried out.Experimental results show that terrain modeling in which terrain semantic information participates as a data source can preserve the semantic features of a terrain area and improve the fidelity of DEM. This method further broadens the data source of terrain modeling.It provides new ideas and methods for terrain modeling and its application.
【作者单位】：合肥工业大学;南京师范大学;
【基金】：国家自然科学基金项目(41401445,41371421) 安徽省自然科学基金项目(1508085QD76) 中央高校基本科研业务费专项资金项目(J2014HGBZ0198)
【分类号】：P208

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