Technology Application |
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Surface Collapse Identification and Its Boundary Extraction Using High Resolution Remote Sensing |
WANG Qin-jun, CHEN Yu, LIN Qi-zhong |
Key Laboratory of Digital Earth, Center for Earth Observation and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China |
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Abstract In order to extract surface collapse’s boundary and calculate its area precisely,this paper summed up the identification keys to hazards and introduced a method for extracting the boundary of surface collapse. In this method,high resolution remote sensing image is used as the data source. Based on image fusion,the authors applied the Robert and Directional operators to the fused image respectively. Next,the first band in the original and two enhanced images were used to form false color image(Original,Robert and Direction enhanced image,ORD). Finally,the surface collapse area was calculated using ArcGIS software. The results show that the method can highlight the boundary of the surface collapse and reduce the error of the area calculation effectively.
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Keywords
ASTER
SWIR
Alteration anomalies
Chambishi
Relative absorption-Band Depth (RBD)
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Issue Date: 07 September 2011
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