Building 3D GIS Model of a University Campus for Planning Purposes: Methodology and Implementation Aspects

The objective of this work is to elaborate on the demand and usefulness of three-dimensional modeling, and also, explore the capabilities of current technologies via a pilot project. Through this, one can discuss the corresponding required production workflow for building three-dimensional GIS Model of a complex site of interest using Digital Photogrammetry techniques and GIS modeling. In our case, two University campuses are modeled using two different cameras: the first uses the RC30 aerial camera format and the other uses new up-to-data digital camera technology (Kodac 4X4K that deliver very sharp colored images). Assessment of the results and discussions of the over all project precision and reliability, and orthophoto products are the focus and our objectives of this study. The study will present the methodology and the implementation techniques used to build first the three dimensional model, and also, construction of the GIS data-model with required relational database to offer the possibility of flexible and interactive visual GIS analysis of the ever changing situations in the University site. Furthermore, the work shed lights on possible GIS spatial analysis techniques in three-dimensional, which will provide a very useful and effective interactive tool. Decision support system for planning purpose in a 3D visual environment for emergency, evacuation and security matters will be illustrated based on suggested scenarios. The mechanism of using suitable software that are of importance for the success of this work will be explored. Finally, visualization results of the projects with suitable example of possible analysis for several applications will be presented and discussed