Immersive Analytics in Dam Safety Control 2025 Nuno Verdelho Trindade Instituto Superior Técnico, Universidade de Lisboa, Portugal PDF Cite Plain textN. Verdelho Trindade, Immersive analytics in dam safety control. Lisbon, Portugal: Universidade de Lisboa, Instituto Superior Técnico, 2025. [Online]. Available: https://scholar.tecnico.ulisboa.pt/records/mMUWYXyv__5FeaEeUfRIEEwbrGh3ua8TwIHo BibTeX@phdthesis{verdelhotrindadephdthesis2025, author = {Nuno {Verdelho Trindade}}, title = {Immersive analytics in dam safety control}, school = {Universidade de Lisboa, Instituto Superior Técnico, Lisbon, Portugal}, source = {https://scholar.tecnico.ulisboa.pt/records/mMUWYXyv__5FeaEeUfRIEEwbrGh3ua8TwIHo}, year = {2025} keywords = {proxsituated-visualization, situated-visualization, immersive-analytics, extended-reality, dam-safety-control}, abstract = {Dam safety control consists of monitoring and analyzing observed data and comparing it with computed results from numerical models. Dam data visualization is typically carried out on desktop computers using traditional charts. Visual contextualization of the information contained in these charts with the area of the dam it pertains to is fundamental to understanding the overall behavior of dams. While nothing provides a more accurate spatial perception of the structures’ features than standing in front of the actual dam, such a scenario is impractical. Dams are often located in remote locations, and data analysis is typically carried out in the office. And while looking at the data without contextualizing it with the dam is not ideal, looking at the real dam without contextualizing it with the data is equally problematic. Immersive analytics uses extended reality to generate immersive environments where data can be visualized. Our research explores how it can be applied to dam safety control to improve structural data visualization. We address a subarea called situated visualization, aimed at displaying information on-site contextualized with the object of analysis. However, because dam data analysis activities are typically carried out off-site, we focus on using virtual 3D models instead of the actual dam (proxsituated visualization). We address the development of specialized prototypes, which are used to support a user study designed to determine if and where proxsituated visualization can improve dam safety control. The study compares performance and user experience across multiple modes/devices (desktop computer, virtual reality, and augmented reality) with distinct levels of visual detail and data representation indirection. Our findings suggest that there are indeed some advantages in both user experience and analysis performance in immersive proxsituated environments, compared to traditional/non-immersive.} }
The Future of Structural Health Monitoring with Extended Reality 2025 Nuno Verdelho Trindade, Alfredo Ferreira, Daniel Gonçalves, Sérgio Oliveira Digital Transformation in the Construction Industry, Chapter 30 DOI PDF Cite Plain textN. Verdelho Trindade, A. Ferreira, D. Gonçalves, and S. Oliveira, "The future of structural health monitoring with extended reality," in Digital Transformation in the Construction Industry, Woodhead Publishing Series in Civil and Structural Engineering. Elsevier, 2025, pp. 593–620, doi: 10.1016/B978-0-443-29861-5.00030-5. BibTeX@incollection{verdelhotrindadeshmxr2025, title = {Chapter 30 - The future of structural health monitoring with extended reality}, editor = {Ehsan Noroozinejad Farsangi and Mohammad Noori and T.Y Yang and Vasilis Sarhosis and Seyedali Mirjalili and Mirosław J. Skibniewski}, booktitle = {Digital Transformation in the Construction Industry}, publisher = {Woodhead Publishing}, pages = {593-620}, year = {2025}, series = {Woodhead Publishing Series in Civil and Structural Engineering}, isbn = {978-0-443-29861-5}, doi = {https://doi.org/10.1016/B978-0-443-29861-5.00030-5}, url = {https://www.sciencedirect.com/science/article/pii/B9780443298615000305}, author = {Nuno Verdelho Trindade and Alfredo Ferreira and Daniel Gonçalves and Sérgio Oliveira}, keywords = {Extended reality, structural health monitoring, virtual reality, augmented reality, safety control}, abstract = {Extended reality (XR) comprises the set of technologies directed at changing users’ observable reality. These technologies include most notably, virtual reality and augmented reality, and also other lesser-known modalities like diminished reality. The ongoing global transition to digital has determined the increasing adoption of these visualization and interaction technologies in the construction industry. Examples of applications of such technologies can be found for domains extending from design and planning to construction and operation. Some of the most mature applications of XR to the construction industry can be found in the structural health monitoring (SHM) field. This maturity results from the tangible advantages of performance, precision, and convenience, among others, that XR technologies have been proven to bring to this area. The use of such technologies, however, is not without important challenges, which must be taken into account when researching and developing applications. In this chapter, we analyze how the different modalities of XR are being applied in the context of the distinct areas of SHM. A specific case study of the application of these technologies to dam safety control is also described. In that scope, a set of guidelines is presented to assist researchers and domain experts in implementing such solutions. Finally, a reflection on the future of XR in SHM is carried out.} }
Extended Reality in AEC 2023 Nuno Verdelho Trindade, Alfredo Ferreira, João Madeiras Pereira, Sérgio Oliveira Automation in Construction, Volume 154, October 2023, 105018 DOI PDF Cite Plain textN. Verdelho Trindade, A. Ferreira, J. M. Pereira, and S. Oliveira, "Extended reality in AEC," Automation in Construction, vol. 154, p. 105018, Oct. 2023, doi: 10.1016/j.autcon.2023.105018. BibTeX@article{verdelhotrindade2023, title = {Extended reality in AEC}, journal = {Automation in Construction}, volume = {154}, pages = {105018}, year = {2023}, issn = {0926-5805}, doi = {https://doi.org/10.1016/j.autcon.2023.105018}, url = {https://www.sciencedirect.com/science/article/pii/S0926580523002789}, author = {Nuno {Verdelho Trindade} and Alfredo Ferreira and João {Madeiras Pereira} and Sérgio Oliveira}, keywords = {Systematic literature review, Extended reality, Virtual reality, Augmented reality, AEC}, abstract = {This article presents a survey on extended reality (XR) application to architecture, engineering, and construction (AEC). A systematic literature review (SLR) of studies found in the Scopus digital library is carried out for that purpose. The SLR comprises 983 relevant papers published between 2011 and 2022. It frames and aggregates research by the AEC field and by the usage of XR technologies. With that aim, specific taxonomies are developed and applied. Research typologies, including used approaches and contributions, are also examined. Furthermore, the limitations and challenges cited in the analyzed studies are addressed. This SLR is primarily addressed to researchers for decision-making in identifying and scoping future research activities. It is also directed to AEC practitioners as a source to determine the conditions in which XR can be used and what its implications are.} }
Extended Reality in the Safety Control of Dams 2020 Nuno Verdelho Trindade, Alfredo Ferreira, Sérgio Oliveira Fourth International Dam World Conference - DW2020. vol. 1, Paper 169, pag. 71-89, 20 pages PDF Cite Plain textN. Verdelho Trindade, A. Ferreira, and S. Oliveira, "Extended reality in the safety control of dams," in Proc. 4th Int. Dam World Conf., vol. 1, Lisbon, Portugal, 2020, pp. 71–89. [Online]. Available: https://repositorio.lnec.pt/handle/123456789/1012969 BibTeX@inproceedings{verdelhotrindade2020, author = {Nuno {Verdelho Trindade} and Alfredo {Ferreira} and Sergio {Oliveira}}, title = {Extended Reality in the Safety Control of Dams}, year = {2020}, publisher = {Laboratorio Nacional de Engenharia Civil (LNEC)}, address = {Lisbon, Portugal}, url = {https://repositorio.lnec.pt/handle/123456789/1012969}, booktitle = {Proceedings of the Fourth International Dam World Conference}, articleno = {Paper 169}, volume = {1}, pages = {71-89}, numpages = {20}, keywords = {dam safety control, extended reality, augmented reality, structural health monitoring, concrete dams}, location = {Lisbon, Portugal}, abstract = {Dam Safety Control has been at the front line of technology adoption in what concerns data acquisition. However, it does not take full advantage of the latest advancements when it comes to in-situ, real-time, information visualization. This work explores the application of Augmented Reality to the inspection and monitoring of large Civil Engineering structures, namely concrete dams. The proposed approach focuses on offering new visualization possibilities, that are not accessible through traditional means, to Dam Safety Control. In that scope, it depicts the specification and development of a proof-of-concept prototype that allows the monitoring of relevant structural-related information in an Augmented Reality environment. In particular, it offers an easy and straightforward way for Civil Engineers and Observation Technicians a mean to access data from the network of sensors situated in the downstream face and the interior of the structure. Besides providing insightful information on the current status, it allows exploring the evolution in time of values registered in each sensor. A preliminary study aimed at validating the proposed approach shows that Augmented Reality technologies can be used efficiently in Dam Safety Control.} }
