空间中具有确定端点的不确定简单线及其向相关拓扑谓词的实现

A Predict Defines Topological Relations between Uncertain Simple Line with Certain Endpoints and other Spatial Objects

空间对象的确定性与不确定性处理是空间数据库研究的一个重要方面。在扩展9-交模型基础上,给出了空间中具有确定端点的不确定简单线及不确定区域的相关定义,据此对其相关的拓扑谓词进行了实现,得到联合完备且互不相交的拓扑关系,并通过对扩展9-交模型的简化,对拓扑关系进行了编码。以上过程可指导空间拓扑关系的算法实现。

The certainty and uncertainty of spatial objects is important for study of spatial database.A topological predicts represents the jointly exhaustive and pairwise disjoint relations between uncertain simple line with certain endpoints and other spatial objects are concluded based on extending nine-intersection model.The simplifying extending nine-intersection model is used for encoding the topological relations which is a guidance for the implementation of algorithm.