Volume 36 Issue 8
Aug.  2011
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LI Hui, DAI Zhenyong, ZHANG Lihua, JIANG Zhiyong. hematical Morphology Based Drainage Line Extraction from Remote Sensing Image[J]. Geomatics and Information Science of Wuhan University, 2011, 36(8): 956-959.
Citation: LI Hui, DAI Zhenyong, ZHANG Lihua, JIANG Zhiyong. hematical Morphology Based Drainage Line Extraction from Remote Sensing Image[J]. Geomatics and Information Science of Wuhan University, 2011, 36(8): 956-959.
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hematical Morphology Based Drainage Line Extraction from Remote Sensing Image

  • 1 Department of Geography,China University of Geosciences,388 Lumo Road,Wuhan 430074,China;2 Three Gorges Research Center for Geohazards,Ministry of Education,China University of Geosciences,388 Lumo Road,Wuhan 430074,China;3 School of Resource and Environmental Science,Wuhan University,129 Luoyu Road,Wuhan 430079,China;4 College of Earth and Environment Science,Lanzhou University,222 South Tianshui Road,Lanzhou 730000,China

Funds: 国家自然科学基金主任基金资助项目(41040021);湖北省自然科学基金资助项目(2009CDB104);中央高校基本科研业务费专项资金资助项目(CUGL100211);武汉大学测绘遥感信息工程国家重点实验室开放研究基金资助项目((09)重01)
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  • Received Date: June 14, 2011
  • Published Date: August 04, 2011
    Graphical Abstract
    • Abstract
  • A mathematical morphology based drainage line extraction method from remote sensing image is proposed.The coarse drainage line is first extracted with spectral pattern recognition approach,and then is subject to processes such as drainage line connection,noise removal and drainage line thinning using mathematical morphology transformations.A subset of landsat ETM+ image is used to test the presented method.The result shows that this method can effectively extract continuous and smooth drainage lines.Further comparison is made between the extracted drainage lines and that of the digital line graph(DLG) with reference of remote sensing image.It demonstrated that the drainage lines by the proposed method are better agreed with the image than that of DLG.
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