2022 |
Potsiou, Chryssy; Ioannidis, Charalabos; Soile, Sofia; Verykokou, Styliani; Gkeli, Maria; Filippakopoulou, Maria A Technical Tool for Urban Upgrading: An Application for Cultural Heritage Preservation and Planning for Affordable Housing Journal Article In: Land, vol. 11, no. 8, pp. 1197, 2022, ISSN: 2073-445X. Abstract | Links | BibTeX | Tags: 3D model, Affordable housing, Cultural heritage, land policy, urban planning, valuation @article{potsiou2022technical, A technical tool to support projects for urban reforms and the implementation of current land policies is presented together with an example for its application in a project concerning the preservation of privately-owned residential buildings listed as “protected” cultural heritage (CH) constructions, urban planning and planning for affordable housing provision. The projects should be based on the voluntary participation of current property owners and an agreement signed between them and the private developer (team of professionals), so that the project will be self-financed through value capture measures to be decided by the state. The application presented here is based on the assumption that the state, by example, has set the rules for an increase in FAR in order to apply affordable housing policy and the preservation of listed CH residential private constructions. The state also provides the rules for identifying the target group of beneficiaries for affordable housing. Current property owners contribute the land, while the developer's team undertakes all project costs. New property units are shared accordingly with the developer, the current owners and the beneficiaries for affordable housing. No additional public funds for the “affordable housing” units or for expropriation of the protected CH buildings is required. |
2021 |
Verykokou, Styliani; Soile, Sofia; Bourexis, Fotis; Tokmakidis, Panagiotis; Tokmakidis, Konstantinos; Ioannidis, Charalabos A Comparative Analysis of Different Software Packages for 3D Modelling of Complex Geometries Proceedings Article In: Ioannides, Marinos; Fink, Eleanor; Cantoni, Lorenzo; Champion, Erik (Ed.): Digital Heritage. Progress in Cultural Heritage: Documentation, Preservation, and Protection, pp. 228–240, Springer International Publishing, Cham, 2021, ISBN: 978-3-030-73043-7. Abstract | Links | BibTeX | Tags: 3D model, geometric documentation, Software evaluation @inproceedings{10.1007/978-3-030-73043-7_19, The purpose of this paper is the investigation of the performance of four well-established commercial and open-source software packages for automated image-based 3D reconstruction of complex cultural and natural heritage sites, i.e., Agisoft Metashape, RealityCapture, MicMac and Meshroom. The case study is part of the inaccessible giant rock of St. Modestos, in the archaeological site of Meteora. In terms of computational time, the commercial software packages were the most time-efficient solutions, with Metashape being the fastest one. They also have a friendlier user interface, which makes them adoptable even by non-photogrammetrists. $Alpha$ll four solutions yielded approximately comparable results in terms of accuracy and may be used for generation of 3D dense point clouds of complex sites. With the exception of Meshroom, they may produce georeferenced results. Also, with the exception of MicMac, which did not yield satisfactory results in terms of textured mesh, they may be used for generating photorealistic 3D models. The comparative analysis of the results achieved by the tested software will serve as the basis for establishing photogrammetric pipelines that may be generally used for 3D reconstruction of complex geometries. |
2020 |
Kontos, D; Georgopoulos, A PERFORMING 3D MEASUREMENTS in A VR ENVIRONMENT Proceedings Article In: Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci. - ISPRS Arch., pp. 863–870, International Society for Photogrammetry and Remote Sensing, 2020, ISSN: 16821750. Abstract | Links | BibTeX | Tags: 3D model, HTC Vive, Unreal Engine, Virtual Reality @inproceedings{Kontos2020, In the context of this paper, a virtual reality application that allows each user to perform basic topographic processes on an already created 3D model inside a virtual environment was developed. Specifically, it is an application that allows the user to perform measurements of distances between two points in three-dimensional space and measurement and extraction of the three-dimensional coordinates of any point inside the virtual reality environment. Furthermore, the created application was evaluated in terms of its functionality, its usability and metric accuracy. Before the developing stage a research was done in order to determine which virtual reality system and which game engine is most suitable to use and finally the HTC Vive® virtual reality system and the Unreal Engine 4 game engine were used. Before all that, the concept of the virtual reality science was defined and also the virtual reality technologies in today's world were analyzed. |
2019 |
Tapinaki, S; Skamantzari, M; Chliverou, R; Evgenikou, V; Konidi, A M; Ioannatou, E; Mylonas, A; Georgopoulos, A 3D IMAGE BASED GEOMETRIC DOCUMENTATION OF A MEDIEVAL FORTRESS Journal Article In: ISPRS - Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci., vol. XLII-2/W9, pp. 699–705, 2019, ISSN: 2194-9034. Abstract | Links | BibTeX | Tags: 3D model, laser scanning, Orthophoto, Photogrammetry, UAV @article{Tapinaki2019, Abstract. The detailed and thorough documentation of monuments is a rather complex process that requires the application of the best available state of the art techniques in order to preserve, restore, promote and make cultural heritage accessible to the public. This paper presents the 3D Geometric Documentation of a part of the medieval fortress of Chios, focussing in particular on the practical challenges which the object presented. The case study is a part of the fortified construction, consisting of a bastion, a watch tower on top of this bastion and a significant part of its walls with a surface of about 1053m2 in total. The goal of the survey was to produce an accurate 3D detailed textured model and a series of coloured orthophotos and 2D vector drawings. The documentation methods employed included close-range automated photogrammetry and image-based modelling, terrestrial laser scanning and topographic surveys, an ideal combination of methods. |
2022 |
A Technical Tool for Urban Upgrading: An Application for Cultural Heritage Preservation and Planning for Affordable Housing Journal Article In: Land, vol. 11, no. 8, pp. 1197, 2022, ISSN: 2073-445X. |
2021 |
A Comparative Analysis of Different Software Packages for 3D Modelling of Complex Geometries Proceedings Article In: Ioannides, Marinos; Fink, Eleanor; Cantoni, Lorenzo; Champion, Erik (Ed.): Digital Heritage. Progress in Cultural Heritage: Documentation, Preservation, and Protection, pp. 228–240, Springer International Publishing, Cham, 2021, ISBN: 978-3-030-73043-7. |
2020 |
PERFORMING 3D MEASUREMENTS in A VR ENVIRONMENT Proceedings Article In: Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci. - ISPRS Arch., pp. 863–870, International Society for Photogrammetry and Remote Sensing, 2020, ISSN: 16821750. |
2019 |
3D IMAGE BASED GEOMETRIC DOCUMENTATION OF A MEDIEVAL FORTRESS Journal Article In: ISPRS - Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci., vol. XLII-2/W9, pp. 699–705, 2019, ISSN: 2194-9034. |