supported by the National Key Research and Development Program of China(Grant No.2016YFC0803105);the National Natural Science Foundation of China(Grant No.41271389 and 41401433);the National High Technology Research and Development Program of China(Grant No.2015AA123901);the Key Technologies R&D Program of Tianjin(Grant No.15ZCZDSF00640).
Constructing 3D railway scenes helps improve the railway information construction ability and the comprehensive railway management level.However,the existing modeling methods have disadvantages such as low flexibility...