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change. A watershed pre-segmentation is taken to accelerate the 
algorithm. We can adapt the weight to get better segmentation 
results according to the segmented image property. 
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ACKNOWLEDGEMENTS 
Thanks are due for the supports from: 
Open research subject of Key Laboratory of Geo-informatics 
of State Bureau of Surveying and Mapping (Project No.: 
A1721). 
China International Science and Technology Cooperation 
Project: High-Resolution Stereo Mapping Satellite: Field 
Geometric Calibration and Application (Project No.: 
2006DFA71570). 
China National 863 project: Intensive Image Matching and 
continuous digital surface reconstruction method based on high 
overlap aerial images (Grant No: 2006AA12Z134). 
Commission of Science Technology and Industry for National 
Defense Project: Key Techniques of Data Processing for 
Mapping Satellite. 
Natural Science Fund of P. R. China (No 40601084 and No. 
40523005). 
Open Research Fund Program of State Key Laboratory of 
Satellite Ocean Environment Dynamics (No. SOED0602). 
Open Research Fund Program of the Geometries and 
Applications Laboratory, Liaoning Technical University.