王中辉, 闫浩文. 一种改进的锥形方向关系模型[J]. 武汉大学学报 ( 信息科学版), 2014, 39(2): 186-190. DOI: 10.13203/j.whugis20120688
引用本文: 王中辉, 闫浩文. 一种改进的锥形方向关系模型[J]. 武汉大学学报 ( 信息科学版), 2014, 39(2): 186-190. DOI: 10.13203/j.whugis20120688
WANG Zhonghui, YAN Haowen. An Improved Cone-based Model for DescribingSpatial Direction Relations[J]. Geomatics and Information Science of Wuhan University, 2014, 39(2): 186-190. DOI: 10.13203/j.whugis20120688
Citation: WANG Zhonghui, YAN Haowen. An Improved Cone-based Model for DescribingSpatial Direction Relations[J]. Geomatics and Information Science of Wuhan University, 2014, 39(2): 186-190. DOI: 10.13203/j.whugis20120688

一种改进的锥形方向关系模型

An Improved Cone-based Model for DescribingSpatial Direction Relations

  • 摘要: 目的 根据Gestalt心理学的空间认知原理,提出了一种改进的锥形方向关系模型,其基本思想是:首先以参考目标的 MBR(minimum bounding rectangle)的四条边界的中点作为起点,分别构建 N、S、W、E 等4个锥形方向区域;然后,利用锥形方向区域的边界、MBR的边界及其延长线,对空间方向重新进行划分,从而得到改进的锥形模型。实验表明该模型能够有效地克服现有锥形模型中存在的缺陷。

     

    Abstract: Objective Using spatial cognitive principles drawn from the Gestalt psychology,an improved cone-based model is proposed for computing and describing spatial direction relations.The basic idea of themodel is:first,calculate the MBR(minimum bounding rectangle)of the reference object;then,takethe midpoints of the four edges of the MBR as the starting points to construct four cone direction re-gions(N,S,W,E);finally,use the edges of the four cone direction regions,the edges of the MBRand their extension lines to re-divide spatial directions.Experiments show that the improved cone-based model can effectively overcome the defects in the existing cone-based models.

     

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