Acta Geodaetica et Cartographica Sinica ›› 2014, Vol. 43 ›› Issue (12): 1285-1292.doi: 10.13485/j.cnki.11-2089.2014.0191

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The Fast Positioning and Optimal Combination Matching Method of Change Vector Object

LUO Guowei1,2, ZHANG Xingchang1,3, QI Lixin4, GUO Taisheng1   

  1. 1. School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China;
    2. Guangxi Teachers Education University, Nanning 530001, China;
    3. Guangdong Key Laboratory for Urbanization and Geo-simulation, Guangzhou 510275, China;
    4. Institute of Surverying and Mapping of Land and Resources Department of Guangdong Province, Guangzhou 510500, China
  • Received:2014-01-17 Revised:2014-06-22 Online:2014-12-20 Published:2014-12-23

Abstract:

The change-only information is important to the recording of object life cycle, the establishment of spatial-temporal database and the updating of GIS database. To solve the problem of low efficiency of traditional method in change detection when the data volume is large, we proposed a highly efficient method of change detection based on the grid-partitioning of data and the comparison of synthesis of spatial and attribute information. This method only detects the changed grid to reduce the detection region. In order to solve the matching problem of old features and new features, we propose a method named optimal combination-matching method. The method selects the optimally matched features through the comparison of the characteristic of spatial information and semantic information. The method's high efficiency and accuracy in change detection of large volume of spatial data and matching of changed features is validated by experiment.

Key words: change-only information, grid-partitioning, semantic tree, optimal combination-matching

CLC Number: