2020 |
Georgopoulos, Andreas; Skamantzari, Margarita; Tapinaki, Sevi Digitally Developing Medieval Fortifications Proceedings Article In: X, pp. 317–324, Universitat Politàcnica de València, Valencia, 2020, ISBN: 9788490488560. Abstract | Links | BibTeX | Tags: digital devel-opment, geometric documentation, Image-Based modelling, Terrestrial laser scanning @inproceedings{Georgopoulos2020, Modern technological advances have enabled digital automated methods to be applied for accurate and detailed documentation. Such techniques include image based modelling and terrestrial laser scanning. They can easily be adapted to perfectly suit the documentation needs for small and large objects. In this paper the digital geometric documentation of two medieval fortifications using such contemporary methods is briefly described. These are the western part of the Castle of Chios and an important part of the medieval Rhodes fortifications. The purpose of the geometric documentation for both cases was the restoration of these parts, hence detailed documentation was necessary. Conventional two-dimensional plans with digital orthophotographs were produced and from them conventional line drawings were required for the case of Chios castle. Both castle parts included cylindrical bastions, whose projection on two dimensional plans is obviously deformed. Such non-planar parts constitute a special challenge for the geometric documentation. To solve this problem the three-dimensional digital documentations of these parts were developed by using suitable development routines. Thorough presentation of all considerations for these developments are presented and the implementations are briefly described. The results of these developments are evaluated for their usefulness, accuracy, and efficiency as digital documentation products. |
Stampouloglou, Maria; Toska, Olympia; Tapinaki, Sevasti; Kontogianni, Georgia; Skamantzari, Margarita; Georgopoulos, Andreas Archaeological anastylosis of two Macedonian tombs in a 3D virtual environment Journal Article In: Virtual Archaeol. Rev., vol. 11, no. 22, pp. 26, 2020, ISSN: 1989-9947. Abstract | Links | BibTeX | Tags: 3D documentation, Image-Based modelling, Terrestrial laser scanning, virtual anastylosis @article{Stampouloglou2020, Archaeological restoration of monuments is a practice requiring extreme caution and thorough study. Archaeologists and conservation experts are very reluctant to proceed to restoration and indeed to reconstruction actions without detailed consultation and thought. Nowadays, anastylosis executed on the real object is practically prohibited. Contemporary technologies have provided archaeologists and other conservation experts with the tools to embark on virtual restorations or anastyloses, thus testing various alternatives without physical intervention on the monument itself. In this way, the values of the monuments are respected according to international conventions. In this paper, two such examples of virtual archaeological anastyloses of two important Macedonian tombs in northern Greece are presented. The anastyloses were performed on three-dimensional (3D) models which have been produced using modern digital 3D documentation techniques, such as image-based modelling and terrestrial laser scanning. The reader is introduced to the history and importance –as well as the peculiarities– of the Macedonian tombs. In addition, the two tombs are described in detail mainly from an archaeological point of view The process of field data acquisition and processing to produce the 3D models are described. Simple and more or less standard methods were employed in acquiring the raw data. Processing was carried out using commercial software. The resulting 3D models and other documentation products are assessed for their accuracy and completeness. The decisions for the virtual anastylosis are explained in detail and the actual process is also described. The restored monuments are presented and evaluated by the conservation experts. Thus, it is shown how important virtual anastylosis of monuments is to archaeological researchers, as it enables them to conduct in-depth studies, without actually tampering with the monuments themselves. Digital 3D models are contributing to many disciplines, especially in archaeology, as they enable a wider audience to easily access both archaeological and geometric information as well as offering a high degree of interaction possibilities. |
2017 |
Georgopoulos, A; Lambrou, E; Pantazis, G; Agrafiotis, P; Papadaki, A; Kotoula, L; Lampropoulos, K; Delegou, E; Apostolopoulou, M; Alexakis, M; Moropoulou, A In: Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci. - ISPRS Arch., vol. 42, no. 5W1, pp. 487–494, 2017, ISSN: 16821750. Abstract | Links | BibTeX | Tags: Geomatics, geometric documentation, Image based modelling, Materials, non-destructive techniques, Terrestrial laser scanning @article{Georgopoulos2017, The National Technical University of Athens undertook the compilation of an "Integrated Diagnostic Research Project and Strategic Planning for Materials, Interventions Conservation and Rehabilitation of the Holy Aedicule of the Church of the Holy Sepulchre in Jerusalem". This paper focuses on the work merging the geometric documentation with the characterization of materials, the identification of building phases and the diagnosis of decay and pathology through the use of analytical and non-destructive techniques. Through this integrated approach, i.e. through the documentation and characterization of the building materials, through the diagnosis of decay and pathology, through the accurate geometric documentation of the building and through the non-destructive prospection of its internal structure, it was feasible to identify the construction phases of the Holy Aedicule, identifying the remnants of the preserved earlier constructions and the original monolithic Tomb. This work, thus, demonstrates that the adoption of an interdisciplinary approach for integrated documentation is a powerful tool for a better understanding of monuments, both in terms of its structural integrity, as well as in terms of its state of preservation, both prerequisites for effective rehabilitation. |
2020 |
Digitally Developing Medieval Fortifications Proceedings Article In: X, pp. 317–324, Universitat Politàcnica de València, Valencia, 2020, ISBN: 9788490488560. |
Archaeological anastylosis of two Macedonian tombs in a 3D virtual environment Journal Article In: Virtual Archaeol. Rev., vol. 11, no. 22, pp. 26, 2020, ISSN: 1989-9947. |
2017 |
In: Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci. - ISPRS Arch., vol. 42, no. 5W1, pp. 487–494, 2017, ISSN: 16821750. |