UCSB Campus Modeling and Visualization
Lihua Lin, Tobias Höllerer
The goal of this project is to:
AR provides rich information about the environment, combining a real scene viewed by the user and a virtual scene created by computer generated graphics.
Augmented reality user interfaces require accurate registration of the virtual world with the actual world. In order to achieve this, the model must match accurately with the real campus.
In this project different data resources are integrated into the 3D campus model. The data sources include:
The procedures involved in this project are shown in Fig 1:
The elevation information uses Lambert Conformal Conic projection. In a relatively small area like the UCSB campus, the error resulting from different projection methods is negligible. We assume that the CAD data is based on the same projection as the elevation data, so we can easily find a common coordinate system for both. The terrain data is used to construct the ground mesh. The elevation is applied to each building and other infrastructure.
By extracting roads and paths from the CAD file and importing them into the project we build a network of paths that can be used for navigational guidance.
For convenience, a 2D campus map is included. When the user moves around the campus, the corresponding location information will be highlighted in the 2D map.
Fig 4. Reconstructed 3D Campus Model