Abstract
Abstract. Currently, the commercial market offers several tools for digital documentation of historic sites and buildings. Photogrammetry and laser scanning play a fundamental role in the acquisition of metric information, which is then processed to generate reliable records particularly useful also in the built heritage conservation field. Although potentially very fast and accurate, such techniques require expert operators to produce reliable results, especially in the case of complex and large sites. The aim of this paper is to present the digital workflow developed for data acquisition and processing of the Shaikh Isa Bin Ali house in Muharraq, Bahrain. This historic structure is an outstanding example of Bahrain architecture as well as tangible memory of the country history, with strong connotations in the Bahrain cultural identity. The building has been documented employing several digital techniques, including: aerial (drone) and terrestrial photogrammetry, rectifying photography, total station and laser scanning. The documentation project has been developed for the Bahrain Authority for Culture and Antiquities (BACA) by a multidisciplinary team of experts from Carleton Immersive Media Studio (CIMS, Carleton University, Canada) and Gicarus Lab (Politecnico di Milano, Italy).
Highlights
The documentation project presented in this work has been developed within the framework of the so-called ‘Pearling initiative’ financed by the Islamic Development Bank (IDB) to support the Conservation and Urban Economic Revival Project in the city of Muharraq, Bahrain (Economist Newspaper, n.d.)
The proposed workflow is based on different tools and methods for data acquisition and processing, mainly based on photogrammetry and laser scanning
A geodetic network adjusted via least squares provided a set of control points, i.e. a reference system for both laser scanning and photogrammetric techniques
Summary
The documentation project presented in this work has been developed within the framework of the so-called ‘Pearling initiative’ financed by the Islamic Development Bank (IDB) to support the Conservation and Urban Economic Revival Project in the city of Muharraq, Bahrain (Economist Newspaper, n.d.). The digital documentation of the house, required to develop informative conservation and maintenance actions, paid particular attention to shape, geometry and colour (Mezzino, Quintero, Pwint, Latt, & Rellensmann, 2016) and the decorative apparatus, spatial design and materials employed as well as to the innovative building solution adopted to adapt to the local hot climate (i.e. ventilation strategies through wind tower, ventilation systems such as the badgir, etc.).
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