| 三个目标间空间方位关系表达模型及其GIS应用 |
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| 引用本文： | 邓敏,刘启亮,徐锐,徐枫.三个目标间空间方位关系表达模型及其GIS应用[J].测绘科学,2010,35(3):58-61. |
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| 作者姓名： | 邓敏 刘启亮 徐锐 徐枫 |
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| 作者单位： | 中南大学信息物理工程学院测绘与国土信息工程系,长沙,410083;湖南师范大学资源与环境学院,长沙,410081 |
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| 基金项目： | 国家自然科学基金，湖南省自然科学基金 |
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| 摘 要： | 空间方位是一类重要的空间关系,它不同于目前研究较多的方向关系。空间方位关系描述的是三个目标间的空间关系,它的理论基础是基于射影几何中的三点共线不变性。本文首先阐述了空间方位的基本定义、表达基础以及它与拓扑关系、方向关系的区别。然后,重点回顾了6种较为有代表性的方位关系描述模型,指出了这些模型的适用性,并对这些模型进行了比较分析。最后,简要地分析了空间方位关系在GIS中的应用前景以及有待进一步研究的若干问题。
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| 关 键 词： | 空间关系 射影几何 空间方位关系 空间推理 形式化模型 |
Modeling orientation relations among three spatial objects and their applications in GIS |
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| DENG Min,LIU Qi-liang,XU Rui,XU Feng.Modeling orientation relations among three spatial objects and their applications in GIS[J].Science of Surveying and Mapping,2010,35(3):58-61. |
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| Authors: | DENG Min LIU Qi-liang XU Rui XU Feng |
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| Abstract: | Spatial orientation relation, as one of important spatial relations, describes relative location constraints among three spatial objects. It differs from the common-used topological, directional and metric relations, and its theoretical foundation is based on the collinearity invariant of three points in projective geometry. This paper focused on the investigation of spatial orientation relation, including its basic concepts, formal models and the applications in the spatial query, analysis and spatial reasoning. In addition, several issues were highlighted for future investigations. |
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| Keywords: | spatial relations projective geometry spatial orientation relation spatial reasoning formal model |
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