2022 |
Potsiou, Chryssy; Doulamis, Nikolaos; Bakalos, Nikolaos; Gkeli, Maria; Ioannidis, Charalabos; Markouizou, Selena A Prototype Machine Learning Tool Aiming to Support 3D Crowdsourced Cadastral Surveying of Self-Made Cities Journal Article In: Land, vol. 12, no. 1, pp. 8, 2022, ISSN: 2073-445X. Abstract | Links | BibTeX | Tags: 3D cadastre, 3D mapping, Crowdsourcing, indoor localization, informal development, Machine Learning @article{potsiou2022prototype,Land administration and management systems (LAMSs) have already made progress in the field of 3D Cadastre and the visualization of complex urban properties to support property markets and provide geospatial information for the sustainable management of smart cities. However, in less developed economies, with informally developed urban areas—the so-called self-made cities—the 2D LAMSs are left behind. Usually, they are less effective and mainly incomplete since a large number of informal constructions remain unregistered. This paper presents the latest results of an innovative on-going research aiming to structure, test and propose a low-cost but reliable enough methodology to support the simultaneous and fast implementation of both 2D land parcel and 3D property unit registration of informal, multi-story and unregistered constructions. An Indoor Positioning System (IPS) built upon low-cost Bluetooth technology combined with an innovative machine learning algorithm and connected with a 3D LADM-based cadastral mapping mobile application are the two key components of the technical solution under investigation. The proposed solution is tested for the first floor of a multi-room office building. The main conclusions concern the potential, usability and reliability of the method. |
Andritsou, D; Gkeli, M; Soile, S; Potsiou, C A BIM/IFC – LADM SOLUTION ALIGNED TO THE GREEK LEGISLATION Journal Article In: Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci., vol. XLIII-B4-2, pp. 471–477, 2022, ISSN: 2194-9034. Abstract | Links | BibTeX | Tags: 3D cadastre, BIM, Greek Legislation, IFC, LADM, Volumetric Rights Restrictions Responsibilities @article{andritsou2022bim,Abstract. The ongoing rapid urbanization has led to the emerge of several complex infrastructures distinguished by multi-dimensional and overlapping property rights. The option of integrating BIM data into LA, aligned with international standards and able to handle the three-dimensional (3D) aspect of cadastral objects utilizing contemporary technologies, may be of a great importance. The main objective of this paper is to investigate the potential integration of the Building Information Model (BIM) and the Industry Foundation Classes (IFC) standard, with the international standard of Land Administration Domain Model (LADM ISO 19152 2012), in order to provide a unified solution for the registration and visualization of 3D spatial and sematic information regarding the complex Rights, Restrictions and Responsibilities (RRR) in the new complex constructions. The proposed solution aims to exploit the available 2D plans for the generation of BIMs; and rely on international LADM's constructional guidelines to provide a standardized cadastral database harmonized with the national Greek cadastral and the legal framework and aligned with the current Greek building code. The proposed framework is tested for two multi-storey buildings. The first results are promising constituting an important tool, for the implementation of 3D cadastres. |
2021 |
Gkeli, Maria; Potsiou, Chryssy; Ioannidis, Charalabos BIM data as Input to 3D Crowdsourced Cadastral Surveying-Potential and Perspectives Proceedings Article In: 2021. Abstract | Links | BibTeX | Tags: 3D cadastre, BIM, Crowdsourcing, Land administration @inproceedings{nokey,So far traditional procedures have often led to increased costs and long delays in the 2D cadastral surveying procedures, making the completion of first registration difficult or even impossible for many countries. In the meantime, the ongoing urbanization has led to the construction of complex buildings with multi-dimensional property rights even in countries with poor and incomplete 2D land administration systems (LAS). This new urban reality though, requires the establishment of modern 3D LAS to protect and secure property Rights, Restrictions and Responsibilities (RRRs) within the three-dimensional environment. Fortunately, crowdsourcing and VGI have recently claimed a critical role as a reliable methodology with an increased potential for affordable and fast systematic registration of both 2D and 3D cadastral data. It has also become clear that a nationwide cadastral system may be comprised of various datasets of varying geometric accuracies integrated together in a fit-for-purpose whole. In the meantime, many cities, regardless of the progress in establishing good land administration systems, are mapped in 3D at various levels of detail and have complex buildings designed, constructed and managed by Building Information Modeling (BIM). Linking cadastral information to the 3D digital representations of the man-made environment could be a promising approach in order to define, declare and visualize the complex 3D cadastral space units. The integration of geospatial information derived from existing BIM with the LAS and the use of crowdsourcing methodology to identify the 3D cadastral objects and declare related rights and other necessary information, may significantly speed up the implementation of multipurpose 3D LAS. Utilizing the Information and Communication Technology (ICT) tools, low-cost equipment, crowdsourcing techniques, web services, open-source software and BIM, the development of a reliable, qualitative and affordable solution for the initial implementation of a 3D cadastre is feasible. This research focuses on how BIM information and crowdsourcing techniques can be combined together to improve the compilation process of a 3D cadastre. The main objective is to investigate and discuss how these domains may interact and cooperate to serve the needs of the systematic 3D Cadastral registration. An innovative 3D crowdsourced cadastral procedure which will also integrate available BIM data is designed, tested and evaluated, aiming to save time and funds and provide a solution for the initial registration and visualization of 3D cadastral data. An open-sourced web application for the visualization and manipulation of BIM data is developed and tested. The user of the application is able to zoom in and out of the scene, make 3D measurements, create vertical and horizontal slices of the building in order to reveal hidden entities, helping him/her to recognize and identify each property unit, and finally insert all the necessary cadastral information, updating the system with new data. The proposed BIM data as Input to 3D Crowdsourced Cadastral Surveying-Potential and Perspectives (11069) Maria Gkeli, Chryssy Potsiou and Charalabos Ioannidis (Greece) FIG e-Working Week 2021 Smart Surveyors for Land and Water Management-Challenges in a New Reality Virtually in the Netherlands, 21-25 June 2021 crowdsourced framework is tested on a multi-storey building in Athens, Greece. The main potential, perspectives and reliability of such an implementation are assessed and discussed. |
2019 |
Gkeli, Maria; Potsiou, Chryssy; Ioannidis, Charalabos Crowdsourced 3D cadastral surveys: looking towards the next 10 years Journal Article In: Journal of Geographical Systems, vol. 21, no. 1, pp. 61-87, 2019. Abstract | Links | BibTeX | Tags: 3D cadastre, 3D modelling, Crowdsourcing, Land administration @article{Gkeli2019,Rapidly growing cities, multiple uses of urban space and the complexity of overlapping property rights require various types of rights to be registered and handled in a uniform and reliable way, considering the third dimension. The adoption of automated and low-cost but reliable procedures for cadastral surveys and for the capture and processing of cadastral data, as well as the use of modern Information Technology (IT) tools and m-services, is the beginning of a new cadastral evolution. 3D-crowdsourced cadastral data capture has huge potential and may soon facilitate the work of National Mapping Agencies (NMAs). In this paper, an innovative fit-for-purpose procedure is designed and initially tested that aims to save time and costs and to provide a modern technical solution for the initial collection, registration and visualization of 3D cadastral data. An open-source, mobile application for the acquisition of 3D crowdsourced cadastral data and 3D modelling and visualization of property units is developed, tested and presented. The proposed technical procedure is adjustable and may be used in both the developed and the developing world. The geometric accuracy of the final product depends on the geometric accuracy of the basemaps used. The developed application is tested on a multi-story building in an urban area of Larisa, in Greece. An initial evaluation of the procedure and the final product, in terms of its usability, affordability, reliability and implementation duration, is conducted. The first results are satisfactory and may lead to a fit-for-purpose procedure for a 3D cadastre for all in the future. |
2022 |
A Prototype Machine Learning Tool Aiming to Support 3D Crowdsourced Cadastral Surveying of Self-Made Cities Journal Article In: Land, vol. 12, no. 1, pp. 8, 2022, ISSN: 2073-445X. |
A BIM/IFC – LADM SOLUTION ALIGNED TO THE GREEK LEGISLATION Journal Article In: Int. Arch. Photogramm. Remote Sens. Spat. Inf. Sci., vol. XLIII-B4-2, pp. 471–477, 2022, ISSN: 2194-9034. |
2021 |
BIM data as Input to 3D Crowdsourced Cadastral Surveying-Potential and Perspectives Proceedings Article In: 2021. |
2019 |
Crowdsourced 3D cadastral surveys: looking towards the next 10 years Journal Article In: Journal of Geographical Systems, vol. 21, no. 1, pp. 61-87, 2019. |