测绘通报 ›› 2019, Vol. 0 ›› Issue (4): 65-70.doi: 10.13474/j.cnki.11-2246.2019.0114

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Metric description of spatial topological relations in moving objects

LI Pengpeng1,2,3, LIU Jiping3, LUO An3, ZHANG Yuting1,2   

  1. 1. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China;
    2. Gansu Provincial Engineering Laboratory for National Geographic State Monitoring, Lanzhou 730070, China;
    3. Chinese Academy of Surveying and Mapping, Beijing 100830, China
  • Received:2018-06-14 Revised:2019-01-16 Online:2019-04-25 Published:2019-05-07

Abstract:

Aiming at the deficiency of the traditional 9-intersection model to express and quantify the spatial topological relations of moving objects, a method of quantitative description of metric parameters is proposed based on the idea of gridization. Firstly, the moving object and the reference object are grid-processed and divided into fixed-size grid arrays; then the 9-intersection model is used to determine the formal description of the topological relations among the spatial objects; finally, the internal components, boundary components, and external components are introduced to describe the spatial topological relations of the moving objects. Experiments show that this method is simple and intuitive to calculate and can more effectively measure the topological relations between moving objects.

Key words: topological relations, gridization, 9-intersection model, metric parameters

CLC Number: