Within this paper, we present the implementation of a walkable virtual city model, created from aerial images of downtown Stuttgart. For this purpose, textured 3D meshes were automatically generated using commercial off-the-shelf multi-view stereo image matching software. This data provided the content for a VR framework based on the Unity game engine. Thus, an interactive data presentation using the HTC Vive virtual reality system was feasible. In addition to navigation, further user interactions such as simple tools for measurements inside the virtual model using handheld controller were implemented. According to our experience, this Stuttgart city walk is not only very attractive for presenting photogrammetric data to the general public at public relations activities, but could also be used as a low-cost and efficient 3D tool for interactive data editing in complex urban environments.

在本文中，我们介绍了根据斯图加特市区的航空影像创建的可步行虚拟城市模型的实现。为此，可使用商用的现成多视图立体图像匹配软件自动生成带纹理的3D网格。这些数据为基于Unity游戏引擎的VR框架提供了内容。因此，使用HTC Vive虚拟现实系统进行交互式数据演示是可行的。除了导航之外，还实现了其他用户交互，例如使用手持控制器在虚拟模型内部进行测量的简单工具。根据我们的经验，斯图加特的城市漫步不仅在公共关系活动中向公众展示摄影测量数据非常有吸引力，