Preliminary Results of Semantic 3D Modeling of Seddülbahir Fortress Using Laser Scanning Data

E. TEKDAL-EMNIYETI^1,2 / K.-H. HAEFELE² / J. ISELE²
(¹Istanbul Technical University, Turkey / ²Karlsruhe Institute of Technology, Germany)

 

 

Abstract:
In this poster, the laser scanning task carried out for the documentation and restoration of the Seddülbahir Fortress which is located at the Gallipoli peninsula of Turkey will be explained. The Seddülbahir Fortress project started as a research project in 1997, in 2004 the project evolved from being a research project into a restoration project. As a part of the Seddülbahir Fortress Site Documentation and Restoration Project the entire site was scanned with a point spacing of 5 mm using a Leica HDS 3000 laser scanner accompanied with a Leica TCR407 Power reflectorless Total Station. With the 360° horizontal and 270° vertical field-of-view of the Leica HDS 3000 laser scanner the survey was concluded with satisfactory results at a site comprising nearly 24.000 m² and a building mass of 4200 m².The scans were then processed and the point clouds were registered using the Cyclone Register program and after the registration the noises are eliminated from the data. Then the evaluation of the point cloud data is carried out.

The aim of the work is to create a semantic 3D model for parts of the fortress from the laser scanning data. As possible models the international standart for building information models IFC (buildingSMART) and the international standart for 3D city models CityGML (Open Geospatial Consortium) will be evaluated.

The final semantic 3D model will be used by different groups of interest (architects, archeologists, structural engineers, etc.) within multiple applications not only for visualization but also:

-Examining the structural condition

– As built documentation for restoration and renovation projects

-As base data for 4D modelling.

Our utmost thanks to all members of Seddulbahir Fortresses project team known as KALETAKIMI and especially to the both project leaders Assoc. Prof. Dr. Lucienne Thys-?enocak from Koç University and Asscoc. Prof. Dr. Rahmi Nurhan Çelik from Istanbul Technical University This article is prepared by the contributions of KALETAKIMI. For complete information, refer to http://www.geo.itu.edu.tr/kaletakimi.

 

Keywords:
Laser scanning, cultural heritage, 3D Model, IFC, CityGML