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Remote Sensing Technology and Application  2011, Vol. 26 Issue (5): 613-618    DOI: 10.11873/j.issn.1004-0323.2011.5.613
    
Coastline Extraction Method based on Remote Sensing and DEM
Liu Shanwei1,2,Zhang Jie2,3,Ma Yi2,3,Sun Weifu4
(1.China University of Petroleum,Qingdao 266555,China;2.First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China;
3.Key Lab of Marine Science and Numerical Modeling,State Oceanic Administration,Qingdao 266061,China;4.Ocean University of China,Qingdao 266100,China)
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Abstract  

The field measurement of coastline has much difficulty and a long measurement cycle,so it is not suitable for normal investigation.In view of this,we studied the method of coastline extraction using satellite remote sensing image with high resolution and DEM.Taking SPOT 5 image as an example,we gave the establishment method of interpreting marks and extraction principle for rocky,gravelly,sandy and artificial coastline.Especially for the sandy area,the image should be stretched before coastline extraction.With regard to the shortages of coastline extraction by remote sensing only,we put forward several ways that combined with fine DEM data,analyzed the reliability of elevation obtained from sandy coastline based on interpreting marks,and then gave the instances of extracting rocky coastline.Finally,comparied with the field measurement result,the positioning accuracy of the extracted coastline is better than 5 m,which can meet the requirement of mapping accuracy for 10 000 scale.

Key words:  Coastline extraction      Remote sensing      DEM     
Received:  31 March 2011      Published:  01 November 2011
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Cite this article: 

Liu Shanwei,Zhang Jie,Ma Yi,Sun Weifu. Coastline Extraction Method based on Remote Sensing and DEM. Remote Sensing Technology and Application, 2011, 26(5): 613-618.

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http://www.rsta.ac.cn/EN/10.11873/j.issn.1004-0323.2011.5.613     OR     http://www.rsta.ac.cn/EN/Y2011/V26/I5/613

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