【摘要】 随着空间数据库技术的不断发展,基于方向关系的空间推理越来越引起人们的注意,作为空间推理的一部分方向关系合成的研究应运而生。文章使用方向关系矩阵表示物体MBR(MinimumBoundingBox)之间方向关系模型,通过一系列方向关系矩阵的性质和运算的定义、定理,提出了原子方向关系与基本方向关系合成问题的求解方法,并证明其正确性。更多还原

【Abstract】 with the continue developing of database technology,qualitative spatial reasoning about cardinal directions has received more and more attention than ever. As one part of spatial reasoning,we concentrate on composing cardinal direction relations in the paper.We extend the direction relations model further and offered the model based on MBR (Minimum Bounding Box).By a series of definition and lemma of direction relation matrix’property and operation,we extend the method for composing atomic with atomic direction relation,bring forward the method for composing an atomic with a basic cardinal direction relation,and validate it.更多还原