Data Integration from Different Sources to Create 3D Virtual Model

3D modelling of virtual environments is a fast developing field of research, and the need for virtual models is increasing rapidly. This paper presents a work, where the aim was to test virtual 3D model production phases, when there are several different data sources. Photogrammetric and laser scanning techniques are utilized in data acquisition. In addition, other available sources, like a base map, have been used to obtain an extensive data set for different modelling purposes. The use of different data sources brings along many challenges. For example, multiple data formats, various accuracies, coordinate systems and level of details must be taken into consideration. In this work, LandXplorer Studio Professional software is used in data integration and creation of the final model. The software is designed for the production of models, which can be directly converted into CityGML data format. CityGML is a standardized and semantic information model designed for storage and exchange of virtual 3D city models. In this research, the final model of the experimental work consists of ground surface, road, road structures like traffic lights and traffic signs, a building and vegetation. It was noticed that the 3D virtual model construction process is often complex and includes various phases when different data sets are integrated.