Acta Geodaetica et Cartographica Sinica ›› 2015, Vol. 44 ›› Issue (4): 438-444.doi: 10.11947/j.AGCS.2015.20130708

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Representation Model of Topological Relations between Complex Planar Objects

CHEN Zhanlong1,2, FENG Qiqi1, WU Xincai1   

  1. 1. Department of Information Engineering, China University of Geosciences, Wuhan 430074, China;
    2. State Key Laboratory of Geography Information Engineering, Xi'an 710054, China
  • Received:2013-12-02 Revised:2014-06-17 Online:2015-04-20 Published:2015-04-27
  • Supported by:
    The National Natural Science Foundation of China (No. 41401443);The National Key Technology Research and Development Program of the Ministry of Science and Technology of China (No. 2011BAH06B04);Open Research Fund of State Key Laboratory of Geography Information Engineering (No. SKLGIE2013-Z-4-1);Open Research Fund of State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing(No. 13I02);Research Funds for the Central Universities Basic Special Projects (No. CUGL130260)

Abstract: In order to express the details of the topological relations between complex planar objects, the classic 9-intersection model is improved and the two extended 9-intersection models that based on decomposition ideas are proposed: the one 9-intersection model method that is decomposed into simple area has its advantage of simplification, but at the cost of complicated expressions; another 9-intersection model method that is decomposed into point-set, conforming well with the classical 9-intersection model, but has relatively complex calculations. Compared the expressive abilities between the two kinds of extened 9-intersection models and the classic 9-intersection model by examples. The results show that both the two extended 9-intersection models can give more accurately expression of the topological relations between details of the sub parts in complex planar objects, the expressive ability of 9-intersection model has been expanded and improved.

Key words: complex planar objects, topological relations, 9-intersection expending

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