Improved 3d City Modeling with Cybercity-modeler (cc-modelertm) Using Aerial-, Satellite Imagery and Laserscanner Data

Semi-automated object extraction has been established as a standard procedure for the efficient generation of 3D city models. Apart from aerial imagery, satellite imagery and laserscanner data turned out to be an additional source to create virtual city models. CyberCity-Modeler (CC-ModelerTM) as a tool for the generation and optimisation of 3D city and plant models has been used in a range of projects with different requirements. Therefore modules have been developed and integrated to the main software package to improve functionality. CC-ModelerTM consists of four modules: CC-Modeler for topological structuring, CC-Edit for improving geometry , CC-Mapping for integration of wall texture and CC-Digit for integration of digitised data from maps. Concerning the software package CC-ModelerTM, some functions as geometrical regularisation of buildings, editing functions for topology adjustment, modeling of overhanging roofs, adding attributes to objects, mapping from texture libraries, generation of corridors etc. are explained in this paper. Additionally, the use of satellite and laserscanner data for the efficient generation of 3D city models as an alternative or supplement to aerial images is discussed and the progress in real-time visualisation of 3D city models is presented.