The railway 3D visual design plays an important role in checking up the projects of railway and improving the quality of railway design ,because the key to implement railway 3D visual design is building 3D model of railway line landscape , The study on the methods of building 3D model of railway line landscape is of important academic meanings and practical values.
In this paper, generating 3D digital terrain model by means of aerial survey data or manual survey data in the region railway will be...
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