3d Recording, Modelling and Visualisation of the Fortification Kristiansten in Trondheim (Norway) by Photogrammetric Methods and Terrestrial Laser Scanning in the Framework of Erasmus Programmes

Abstract

Commission V -WG V/4KEY WORDS: 3D, CAD, meshing, model, reconstruction, virtual ABSTRACT:In this contribution the 3D recording, 3D modelling and 3D visualisation of the fortification Kristiansten in Trondheim (Norway) by digital photogrammetry and terrestrial laser scanning are presented. The fortification Kristiansten was built after the large city fire in the year 1681 above the city and has been a museum since 1997. The recording of the fortress took place in each case at the end of August/at the beginning of September 2010 and 2011 during two two-week summer schools with the topic "Digital Photogrammetry & Terrestrial Laser Scanning for Cultural Heritage Documentation" at NTNU Trondheim with international students in the context of ERASMUS teaching programs. For data acquisition, a terrestrial laser scanner and digital SLR cameras were used. The establishment of a geodetic 3D network, which was later transformed into the Norwegian UTM coordinate system using control points, ensured a consistent registration of the scans and an orientation of the photogrammetric images. The fortress buildings were constructed in detail from photogrammetric photographs and point clouds using AutoCAD, while the fortress area and walls were modelled by triangle meshing in Geomagic. The visualisation of the fortress was carried out 2013 with the software Cinema 4D in the context of a lecture in the Master study programme Geomatics. The 3D model was textured and afterwards presented in a video. This 3D model was finally transferred into the game engine Unity for an interactive 3D visualisation on 3D monitors.

An Efficient Pipeline to Obtain 3D Model for HBIM and Structural Analysis Purposes from 3D Point Clouds

“…While in the past these two techniques have been often treated as two separate methodologies, comparing them in terms of accuracy, cost and flexibility [3], only in recent times, they have started to be considered as complementary [4]. The benefit of integrating these two technologies is to take advantage of the TLS capability to directly acquire a dense coloured cloud, with the flexibility of photogrammetry to operate even in exceptional conditions.…”

Combination of Terrestrial Laserscanning, Uav and Close-Range Photogrammetry for 3d Reconstruction of Complex Churches in Georgia

“…Studies of a similar kind are available from the literature, but refer to other used hardware and software solutions. Examples include Adamopoulos et al (2017), Kersten et al (2015) and Remondino (2011). First results of this project have been published by Chizhova et al (2019).…”

New Opportunities of Low-Cost Photogrammetry for Culture Heritage Preservation

“…The separate category of cultural heritage objects are the fortification constructions. In the world today, where historic sites are under the influence of various anthropogenic and natural factors, documentation of cultural heritage can help in monitoring tasks, restoration and recovery of such structures (Salvador, et al, 2011, Kapica, et al 2013, Kersten, et al 2015, Rodríguez-Gonzálvez, et al 2015.…”