基于圆壳区域伸缩的空间知识表示

Represention of Spatial Knowledge Based on Round Shell Region Extension and Shrinking

区域连接演算RCC(region connection calculs)是定性空间推理的重要理论之一,但由于缺乏必要的定量工具,RCC只能描述空间拓扑关系,而不能描述距离、方向等其他空间关系。在RCC理论的基础上,引入区域圆壳概念对区域伸缩加以度量,得出一种以区域为单位的形式化度量方法,来描述区域间的距离关系、方向关系,从而增强RCC的空间关系表示能力,拓展了RCC理论的适用范围。

Reg ion connection calculus （RCC） is one of the important fundamental theories in qualitative spatial reasoning . Lacking necessary quantitative tools, RCC only describe spatial topological relations, and don＇ t describe other spatial relations such as distance, direction and so on. Based on the RCC theory, round shell region is introduced to measure region extension and shranking .Consequently it find a kind to region for the formal measurement method of the unit to describe multiple spatial relations including distances, directions. Thereby it improves the expressive power of RCC and extends the applicable range of RCC.