吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (5): 1535-1540.doi: 10.13229/j.cnki.jdxbgxb201505023

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Model for three-directional relative directions based on OPRAm

OUYANG Ji-hong1, ZHU Dong-hong1, 2, FU Qian2, YANG Shuai2, CHEN Si2   

  1. 1.College of Computer Science and Technology,Jilin University,Changchun 130012, China;
    2.Key Laboratory of Symbolic Computation and Knowledge Engineering of Ministry of Education, Jilin University, Changchun 130012,China
  • Received:2013-07-02 Online:2015-09-01 Published:2015-09-01

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Abstract: OPRAm is the classical model in the study of two-dimensional direction relationship. However, to solve practical problems, the multi-directional space relationship should be considered. In order to express the relative direction in three-dimensional space, the relative direction of the xoy plane is combined with the relative direction of the z-axis. A three-dimensional relative direction model, 3DOPRAm, is proposed by extending the model OPRAm for two-dimensional direction relationship, and two new relative angles are defined. Moreover, the formal definition of 3DOPRAm multi-granularity, its reverse relationship and the conceptual neighborhood of 3DOPRAm are given. Finally, the conceptual neighborhood based on the action of 3DOPRAm model is applied to describe the car navigation problems. Results show that, compared with existing two-dimensional model, the proposed model is more expressive and can describe more relative directions in three-dimensional space, which has great potential for practical applications.

Key words: artificial intelligence, spatial reasoning, relative direction, OPRAm, 3DOPRAm

CLC Number: 

  • TP18
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