关键词: 宽边界区域, 拓扑关系, 方向关系, 扩展九交模型, 方向关系矩阵

Abstract: The model, regions with broad boundaries, is used to represent uncertain regions. Then, the topological and direction relations between regions with broad boundaries are represented as the combinations of relations associated with crisp regions. By relating direction-relation matrix, representing direction relations, to the extended 9-intersection model, describing topological relations, three approaches are presented to derive topological relations from direction relations between regions with broad boundaries. These approaches can be used to obtain directly topological relations from direction relations. As the approaches can avoid geometric computation, they can improve the efficiency of computing and storing topological relations.

Key words: regions with broad boundaries, topological relations, direction relations, extended 9-intersection model, direction-relation matrix