Acta Geodaetica et Cartographica Sinica ›› 2018, Vol. 47 ›› Issue (3): 403-412.doi: 10.11947/j.AGCS.2018.20170373

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Change Analysis and Decision Tree Based Detection Model for Residential Objects across Multiple Scales

CHEN Liyan1,3, ZHANG Xinchang2,1, LIN Hong3, YANG Min4   

  1. 1. School of Geography and Planning, Sun Yat-Sen University, Guangzhou 510275, China;
    2. School of Geographical Sciences of Guangzhou University, Guangzhou 510006, China;
    3. Guangzhou Urban Planning and Design Survey Research Institute, Guangzhou 510060, China;
    4. School of Resources and Environment Science, Wuhan University, Wuhan 430072, China
  • Received:2017-06-30 Revised:2017-11-16 Online:2018-03-20 Published:2018-03-29
  • Supported by:
    Guangzhou Postdoctoral Science Foundation (No. 201517040001);The Open Fund of Key Laboratory of Urban Land Resources Monitoring and Simulation,Ministry of Land and Resources (No. KF-2016-02-020);The National Natural Science Foundation of China (No. 41431178);The Natural Science Foundation of Guangdong Province of China (No. 2016A030311016);GZIT (No. 2016-A5-147)

Abstract: Change analysis and detection plays important role in the updating of multi-scale databases.When overlap an updated larger-scale dataset and a to-be-updated smaller-scale dataset,people usually focus on temporal changes caused by the evolution of spatial entities.Little attention is paid to the representation changes influenced by map generalization.Using polygonal building data as an example,this study examines the changes from different perspectives,such as the reasons for their occurrence,their performance format.Based on this knowledge,we employ decision tree in field of machine learning to establish a change detection model.The aim of the proposed model is to distinguish temporal changes that need to be applied as updates to the smaller-scale dataset from representation changes.The proposed method is validated through tests using real-world building data from Guangzhou city.The experimental results show the overall precision of change detection is more than 90%,which indicates our method is effective to identify changed objects.

Key words: spatial data updating, multiple scales, change detection, decision tree

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