Acta Geodaetica et Cartographica Sinica ›› 2020, Vol. 49 ›› Issue (6): 703-710.doi: 10.11947/j.AGCS.2020.20190299

• Cartography and Geoinformation • Previous Articles     Next Articles

Simplification method of building polygon based on feature edges reconstruction

YIN Shuo1,2, YAN Xiaoming1,2, YAN Xiongfeng3   

  1. 1. School of Remote Sensing and Information Engineering, Wuhan University, Wuhan 430079, China;
    2. Imagesky Remote Sensing Technology Co. Ltd., Suzhou 215000, China;
    3. College of Surveying and Geo-Informatics, Tongji University, Shanghai 200092, China
  • Received:2019-07-15 Revised:2019-11-11 Online:2020-06-20 Published:2020-06-28
  • Supported by:
    The National Key Research and Development Program of China(No. 2018YFB0505300)

Abstract: This paper presents an approach to simplify building polygons with blurred outline. Definitions of main direction and feature edges that control overall structure of building polygon are proposed to maintain its regular shape. Firstly, the polygon is squared based on the main direction which is calculated by statistical weighting method. Secondly, the feature edges are grouped and abstracted into several types of local structures with corresponding reconstruction rules after they are found in the right-angled building polygon according to the definition of feature edges. Finally, the spatial relationship of the feature edges in the structure is distinguished to select the right reconstruction rule to simplify polygon. The experiments under real data shows that the method is able to restore the rectangularity of the building polygon effectively, maintain the area and the overall shape structure, and hold high reliability and practicability.

Key words: building simplification, feature edge, local reconstruction, right-angle, main direction

CLC Number: