# 3D Reconstruction and Visualization of Alternatives for Restoration of Historic Buildings - A New Approach

### Lemonia Ragia, Froso Sarri, Katerina Mania

#### Abstract

This paper puts forward a 3D reconstruction methodology applied to the restoration of historic buildings taking advantage of the combined speed, range and accuracy of a total geodetic station. The measurements of geo-referenced points produced a fully interactive and photorealistic geometric mesh of an historic monument named ‘Neoria’. ‘Neoria’ is a Venetian building located by the old harbour at Chania, Crete, Greece. The integration of tacheometry acquisition and computer graphics puts forward a novel integrated software framework for the accurate 3D reconstruction of a historical building. The main technical challenge of this work was the production of an accurate 3D mesh based on a sufficient number of tacheometry measurements acquired fast and at low-cost. Interpolation methods ensured that a detailed geometric mesh was constructed based on a few points. Advanced interactive functionalities are offered to the user in relation to identifying restoration areas and visualizing the outcome of such works in a fully interactive application based on game engine technologies. Moreover, the user could photorealistically visualize the actual or restored monument and calculate distances between points.

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#### Paper Citation

#### in Harvard Style

Ragia L., Sarri F. and Mania K. (2015). **3D Reconstruction and Visualization of Alternatives for Restoration of Historic Buildings - A New Approach** . In *Proceedings of the 1st International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,* ISBN 978-989-758-099-4, pages 94-102. DOI: 10.5220/0005376700940102

#### in Bibtex Style

@conference{gistam15,

author={Lemonia Ragia and Froso Sarri and Katerina Mania},

title={3D Reconstruction and Visualization of Alternatives for Restoration of Historic Buildings - A New Approach},

booktitle={Proceedings of the 1st International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,},

year={2015},

pages={94-102},

publisher={SciTePress},

organization={INSTICC},

doi={10.5220/0005376700940102},

isbn={978-989-758-099-4},

}

#### in EndNote Style

TY - CONF

JO - Proceedings of the 1st International Conference on Geographical Information Systems Theory, Applications and Management - Volume 1: GISTAM,

TI - 3D Reconstruction and Visualization of Alternatives for Restoration of Historic Buildings - A New Approach

SN - 978-989-758-099-4

AU - Ragia L.

AU - Sarri F.

AU - Mania K.

PY - 2015

SP - 94

EP - 102

DO - 10.5220/0005376700940102