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backward intersection procedure, and effectiveness of this 
improvement was also confirmed. 
Moreover, volume measurement from video image sequences 
with exterior orientation procedure which developed by authors 
was performed as the application of this study. The accuracy of 
volume measurement from video image sequences was enough 
for the mining field. 
However, in order to obtain the 3D coordinate in global axis, 
the accurate control points are still needed for our system. 
Therefore, as the progress of this study, the authors are 
concentrating for development of the exterior orientation 
technique which includes the positioning sensor information 
such as GPS sensor. From this progress, it will be possible that 
the application of 3D measurement of this study spreads in 
many fields. 
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