Acta Geodaetica et Cartographica Sinica ›› 2017, Vol. 46 ›› Issue (6): 724-733.doi: 10.11947/j.AGCS.2017.20170068

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Object-based Morphological Building Index for Building Extraction from High Resolution Remote Sensing Imagery

LIN Xiangguo1, ZHANG Jixian2   

  1. 1. Chinese Academy of Surveying and Mapping, Beijing 100830, China;
    2. National Quality Inspection and Testing Center for Surveying and Mapping Products, Beijing 100830, China
  • Received:2017-02-28 Revised:2017-04-30 Online:2017-06-20 Published:2017-06-28
  • Supported by:
    The National Natural Science Foundations of China (Nos.41371405;41671440);The Foundation for Remote Sensing Young Talents by the National Remote Sensing Center of China;The Basic Research Fund of the Chinese Academy of Surveying and Mapping (No.777161103)

Abstract: Building extraction from high resolution remote sensing images is a hot research topic in the field of photogrammetry and remote sensing. In this article, an object-based morphological building index (OBMBI) is constructed based on both image segmentation and graph-based top-hat reconstruction, and OBMBI is used for building extraction from high resolution remote sensing images. First, bidirectional mapping relationship between pixels, objects and graph-nodes are constructed. Second, the OBMBI image is built based on both graph-based top-hat reconstruction and the above mapping relationship. Third, a binary thresholding is performed on the OBMBI image, and the binary image is converted into vector format to derive the building polygons. Finally, the post-processing is made to optimize the extracted building polygons. Two images, including an aerial image and a panchromatic satellite image, are used to test both the proposed method and classic PanTex method. The experimental results suggest that our proposed method has a higher accuracy in building extraction than the classic PanTex method. On average, the correctness, the completeness and the quality of our method are respectively 9.49%, 11.26% and 14.11% better than those of the PanTex.

Key words: high resolution remote sensing image, building extraction, region adjacency graph, mathematical morphology, object-based image analysis

CLC Number: