Three dimensional visualisation of Port Dickson Polytechnic campus in cityengine web viewer

Abstract

Development of modern technology and its ability to store, process and supply of digital data has led to a demand for three dimensional (3D) modeling of virtual campus has increased dramatically. Of late, many educational institutes have developed their own campus geodatabase in 3D environment. In this research, the emphasis is given on the development of the 3D building model campus using close range photogrammetry approach due to high cost of data acquisition techniques using airbone laser scanning, terrestrial laser scanning techniques and availability of data. Thus, the close range photogrammetry technique has been selected due to low cost method for data acquisition through capturing the selected building photographs using digital camera. In order to develop the 3D building models, six buildings with different architectural designs and geometries in Port Dickson Polytechnic campus have been chosen as prototype which are modelled using close range photogrammtry approach. The photographs of buildings are then processed using PhotoModeler software to produce the 3D building models in the level of detail (LoD) 2. The building models are textured with the real photographs taken from the field while the roof of the buildings are edited using the SketchUp software. The building models are also georeferenced to the real world coordinate system based on the geocentric Rectified Skew Orthomorphic (RSO) coordinate system. Due to the lack of information access on the web in 3D, CityEngine Web Viewer is used for 3D visualisation of the building models and supported features are also be added to create a realistic model of 3D virtual campus. Through the viewer, the users are able to navigate the 3D building models, zooming and performing the spatial query to extract the information of the buildings. The accuracy of 3D buildings models are evaluated and determined based on the visual analyses and quantitative analyses. At the end of the research, the 3D buildings models can be visualised in the LoD 2.