Open Conference Systems, Kainua 2017

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A geomatics approach to surveys for Late Antiquity buildings. The Episcopal Palace in Side, Turkey
Moises Hernandez Cordero

Last modified: 2017-03-21


Side is one of the best preserved cities of the antiquity in the historical Pamphylia area of Anatolia, current Antalya, Turkey. This archaeological site shows numerous standing structures and monuments spanning from the 7th century BC to the 12th century AD. The aerial and terrestrial survey conducted in 2016 was centred on the so called Episcopal Palace and the Fountain area (east of the Byzantine Hospital) with a total surveyed surface of 5900 m2. The aim of the works was to analyse and recreate the existing structures on a 3D environment to help in later research questions like architectural features, building construction design and upgrades or location of the palace within the urban area. This paper intends to highlight the value of an accurate ground control point network to record an ancient urban site and its advantages when using CAD and GIS software. Besides, it will also focus on the methodology used to:

a) capture the data used on the area of the episcopal palace to create an accurate 3D reconstruction of the remaining structures (with Structure from Motion) for further analysis and interpretations,

b) merge classic survey methods (Total Station and Global Positioning Systems) with relatively new methodologies and hardware (Unmanned Aerial Vehicle) and,

c) check and test the accuracy and the derived errors (data surveying gaps, traversing adjustments, coordinate and projection systems) that arise during the post-processing at the office (ellipsoid/geoid highs differences, noise reduction, fusion between datasets).

I will discuss the uses of the created data (created/resulting data) from the georeferenced point clouds, the model as a visual tool (orthophotos and 3D Mesh) classic planning (elevations and sections) and its utility in a GIS environment (ArcScene).

At the end of the intervention, some questions about the utility of the 3D reconstructions and models in Heritage as well as their utility for the archaeological record will be formulated.