Qi Min

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In this paper an interactive real time 3D segmentation method is presented. Not as the usual slice by slice segmentation in 2D, we perform volumetric segmentation on the 3D image directly, by the extention of fast marching algorithm to 3D. The key steps that set seed points and construct velocity in the fast marching method are put forward. Then 3D(More)
Recently there are many models which make the usage of buildings' shadows to calculate its height, however, they don't care for the universal demand and the method of using coordinates of spatial points is rare. Therefore a comprehensive analysis puts forward, referring how to utilize a single high resolution satellite image to extract construction's(More)
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