Acta Geodaetica et Cartographica Sinica ›› 2015, Vol. 44 ›› Issue (1): 59-66.doi: 10.11947/j.AGCS.2015.20130514

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Information Extraction Method of Alpine Glaciers with Multitemporal and Multiangle Remote Sensing

DU Weibing1,2, LI Junli2, BAO Anming2, WANG Baoshan1, WANG Shuangting1   

  1. 1. School of Surveying and Land Information Engineering, Henan Polytechnic University, Jiaozuo 454000, China;
    2. Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
  • Received:2013-12-02 Revised:2014-04-23 Online:2015-01-20 Published:2015-01-22
  • Supported by:

    The Chinese Academy of Sciences Key Deployment Project (No. KZZD-EW-08-02-02) Key Program for International S&T Cooperation Projects of China (No. 2010DFA92720-04) The National Natural Science Foundation of China (Nos. U1178302 41371419 41101041)

Abstract:

A glacier extraction method based on multitemporal and multiangle remote sensing images is proposed. Firstly, a "global-local" threshold segmentation method is applied to extract snow ice boundaries with multitemporal remote sensing images. Secondly, the glacier boundaries hidden by mountain shadows are restored with topographic features and multiangle information in different remote sensing images. Finally, the best glacier extents are the intersections of different glacier/snow extents. In order to validate the method, a glacier extraction is tested with 4 Landsat images during 2009-2010 in the western part of Tumur peak of the Tienshan Mountains. The results show that the proposed method performs well in extracting the glacier boundaries inside the mountain shadows with multiangle images.

Key words: glacier extraction, mountain shadow, global-local, multiangle

CLC Number: