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The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
Figure 7. Deviation of river layer 
4 5 
(Ì 7 
10 
Figure 8. Deviation of structures layer 
5. CONCLUSIONS 
In this research, ortho imagery was efficiently generated from 
SPOT5 single image and an existing digital map. And analysis 
of positional accuracy of ortho imagery which was generated 
from SPOT5 single image was performed by comparing with 
reference digital map produced by National Geographic 
Information Institute of Korea. It would be presented for ortho 
imagery mapping and applications using SPOT5 single image. 
The accuracy results of ortho imagery which was generated 
from SPOT5 single image were calculated respectively 
±5.666m in X and ±6.284m in Y. And these results are within 
the permissible accuracy required for the map revision on a 
scale of 1 to 25,000 on the mapping rule notified by the 
National Geographic Information Institute of Korea. It is proved 
that ortho imagery using a single satellite image is effectively 
used to applications considering economical efficiency and 
reality. The present topic of mapping and map revision using 
ortho imagery by a single satellite image is a limit to scale, but 
if it use satellite imagery with higher spatial resolution, it will 
be useful to mapping applications of a large scale. 
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ACKNOWLEDGEMENTS 
This work was supported by the Korea Science and Engineering 
Foundation (KOSEF) grant funded by the Korea government 
(MOST)(No. R01-2006-000-11331-0) 
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