The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B3b. Beijing 2008 
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(b)Shadow extraction result 
(c)Shadow elimination result 
Figure 5. The shadow extraction and elimination results of the 
other IKONOS image 
ACKNOWLEDGEMENTS 
This paper is financed by the item of Institute of Surveying and 
Mapping Zhengzhou 
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