Abstract：Research purposes: This paper researched the design concept of 3D Models in Virtual Reality based an photogrammetry and detailed design method of 3D house models, road models in order to reach the visual effect of high -fidelity of 3D models when reconstructed and displayed.
Research methods : This paper decomposed the complex object such as house or road to every independent ”surface object"，and constructed 3D model with real coordinates, then made texture to every surface to reach the visual effect of high-fidelity.
Research results: It is feasible to construct 3D model for every real object, but it need high requirement for hardwares of computer and we should consider it when built the models.
Research conclusions: The technology of Virtual Reality based on Photogrammetry can provide visual 3D model construction, data management integration, data analysis and applications, and it can rebuild the real hypsogaphy of the area along the mute. With this technology，the designer and decision-maker can have a direct 3D impression of the study area, thus they can have the gist for evaluation and optimization of the design. It can also be used to evaluate the spatial and geometrical linearity of the designed route, vehicle operation safety, environmental influence and to choose the place for bridge，tunnel and station in railway (road) design.
黄华平. 航测虚拟现实中三维模型的设计[J]. 铁道工程学报, 2007, 24(8): 4-6.
HUANG Hua-Ping. Design of 3D Models in Virtual Reality Based on Photogrammetry. 铁道工程学报, 2007, 24(8): 4-6.
2007, Vol. 24 
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