Volume IV-4/W4
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-4/W4, 389-392, 2017
https://doi.org/10.5194/isprs-annals-IV-4-W4-389-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci., IV-4/W4, 389-392, 2017
https://doi.org/10.5194/isprs-annals-IV-4-W4-389-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

  13 Nov 2017

13 Nov 2017

A PROPOSAL FOR GENERALIZATION OF 3D MODELS

A. Uyar1 and N. N. Ulugtekin2 A. Uyar and N. N. Ulugtekin
  • 1OMU, Engineering Faculty, Geomatics Engineering, 55139 Atakum, Samsun, Turkey
  • 2ITU, Civil Engineering Faculty, Geomatics Engineering 80626 Maslak, Istanbul, Turkey

Keywords: 3D models, generalization, LoDs, MRDB, CityGML

Abstract. In recent years, 3D models have been created of many cities around the world. Most of the 3D city models have been introduced as completely graphic or geometric models, and the semantic and topographic aspects of the models have been neglected. In order to use 3D city models beyond the task, a generalization is necessary. CityGML is an open data model and XML-based format for the storage and exchange of virtual 3D city models. Level of Details (LoD) which is an important concept for 3D modelling, can be defined as outlined degree or prior representation of real-world objects. The paper aim is first describes some requirements of 3D model generalization, then presents problems and approaches that have been developed in recent years. In conclude the paper will be a summary and outlook on problems and future work.