AHCI RESEARCH GROUP
Publications
Papers published in international journals,
proceedings of conferences, workshops and books.
OUR RESEARCH
Scientific Publications
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You can expand the Abstract, Links and BibTex record for each paper.
2025
Buldu, K. B.; Özdel, S.; Lau, K. H. Carrie; Wang, M.; Saad, D.; Schönborn, S.; Boch, A.; Kasneci, E.; Bozkir, E.
CUIfy the XR: An Open-Source Package to Embed LLM-Powered Conversational Agents in XR Proceedings Article
In: Proc. - IEEE Int. Conf. Artif. Intell. Ext. Virtual Real., AIxVR, pp. 192–197, Institute of Electrical and Electronics Engineers Inc., 2025, ISBN: 979-833152157-8 (ISBN).
Abstract | Links | BibTeX | Tags: Augmented Reality, Computational Linguistics, Conversational user interface, conversational user interfaces, Extended reality, Head-mounted-displays, Helmet mounted displays, Language Model, Large language model, large language models, Non-player character, non-player characters, Open source software, Personnel training, Problem oriented languages, Speech models, Speech-based interaction, Text to speech, Unity, Virtual environments, Virtual Reality
@inproceedings{buldu_cuify_2025,
title = {CUIfy the XR: An Open-Source Package to Embed LLM-Powered Conversational Agents in XR},
author = {K. B. Buldu and S. Özdel and K. H. Carrie Lau and M. Wang and D. Saad and S. Schönborn and A. Boch and E. Kasneci and E. Bozkir},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-105000229165&doi=10.1109%2fAIxVR63409.2025.00037&partnerID=40&md5=837b0e3425d2e5a9358bbe6c8ecb5754},
doi = {10.1109/AIxVR63409.2025.00037},
isbn = {979-833152157-8 (ISBN)},
year = {2025},
date = {2025-01-01},
booktitle = {Proc. - IEEE Int. Conf. Artif. Intell. Ext. Virtual Real., AIxVR},
pages = {192–197},
publisher = {Institute of Electrical and Electronics Engineers Inc.},
abstract = {Recent developments in computer graphics, machine learning, and sensor technologies enable numerous opportunities for extended reality (XR) setups for everyday life, from skills training to entertainment. With large corporations offering affordable consumer-grade head-mounted displays (HMDs), XR will likely become pervasive, and HMDs will develop as personal devices like smartphones and tablets. However, having intelligent spaces and naturalistic interactions in XR is as important as tech-nological advances so that users grow their engagement in virtual and augmented spaces. To this end, large language model (LLM)-powered non-player characters (NPCs) with speech-to-text (STT) and text-to-speech (TTS) models bring significant advantages over conventional or pre-scripted NPCs for facilitating more natural conversational user interfaces (CUIs) in XR. This paper provides the community with an open-source, customizable, extendable, and privacy-aware Unity package, CUIfy, that facili-tates speech-based NPC-user interaction with widely used LLMs, STT, and TTS models. Our package also supports multiple LLM-powered NPCs per environment and minimizes latency between different computational models through streaming to achieve us-able interactions between users and NPCs. We publish our source code in the following repository: https://gitlab.lrz.de/hctl/cuify © 2025 IEEE.},
keywords = {Augmented Reality, Computational Linguistics, Conversational user interface, conversational user interfaces, Extended reality, Head-mounted-displays, Helmet mounted displays, Language Model, Large language model, large language models, Non-player character, non-player characters, Open source software, Personnel training, Problem oriented languages, Speech models, Speech-based interaction, Text to speech, Unity, Virtual environments, Virtual Reality},
pubstate = {published},
tppubtype = {inproceedings}
}
Recent developments in computer graphics, machine learning, and sensor technologies enable numerous opportunities for extended reality (XR) setups for everyday life, from skills training to entertainment. With large corporations offering affordable consumer-grade head-mounted displays (HMDs), XR will likely become pervasive, and HMDs will develop as personal devices like smartphones and tablets. However, having intelligent spaces and naturalistic interactions in XR is as important as tech-nological advances so that users grow their engagement in virtual and augmented spaces. To this end, large language model (LLM)-powered non-player characters (NPCs) with speech-to-text (STT) and text-to-speech (TTS) models bring significant advantages over conventional or pre-scripted NPCs for facilitating more natural conversational user interfaces (CUIs) in XR. This paper provides the community with an open-source, customizable, extendable, and privacy-aware Unity package, CUIfy, that facili-tates speech-based NPC-user interaction with widely used LLMs, STT, and TTS models. Our package also supports multiple LLM-powered NPCs per environment and minimizes latency between different computational models through streaming to achieve us-able interactions between users and NPCs. We publish our source code in the following repository: https://gitlab.lrz.de/hctl/cuify © 2025 IEEE.
2024
Gemeinhardt, J.; Zöllner, M.; Jahn, C.
Generative AI Tool Pipeline for Creating Artificial Historical Characters for Cultural Heritage XR Proceedings Article
In: C., Stephanidis; M., Antona; S., Ntoa; G., Salvendy (Ed.): Commun. Comput. Info. Sci., pp. 41–46, Springer Science and Business Media Deutschland GmbH, 2024, ISBN: 18650929 (ISSN); 978-303161949-6 (ISBN).
Abstract | Links | BibTeX | Tags: Bavaria, Cultural heritage, Cultural heritages, Extended reality (XR), Generative AI, Historical characters, Immersive, Media production, Open source software, Open systems, Pipelines, Reproducibilities, Smart phones, Virtual representations, Web browsers
@inproceedings{gemeinhardt_generative_2024,
title = {Generative AI Tool Pipeline for Creating Artificial Historical Characters for Cultural Heritage XR},
author = {J. Gemeinhardt and M. Zöllner and C. Jahn},
editor = {Stephanidis C. and Antona M. and Ntoa S. and Salvendy G.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85197123898&doi=10.1007%2f978-3-031-61950-2_5&partnerID=40&md5=8f8a3cf4f4bf024b42f6490f64345df2},
doi = {10.1007/978-3-031-61950-2_5},
isbn = {18650929 (ISSN); 978-303161949-6 (ISBN)},
year = {2024},
date = {2024-01-01},
booktitle = {Commun. Comput. Info. Sci.},
volume = {2116 CCIS},
pages = {41–46},
publisher = {Springer Science and Business Media Deutschland GmbH},
abstract = {In our project, we aimed to create historically authentic and vivid virtual representations of historic personalities that are connected to the regional Fichtelgebirge (Bavaria, Germany) to support the storytelling of our immersive XR applications. We are describing the tools in detail, the process of the tool chain and the resulting media. Next, we are discussing the challenges in media production like historical correctness and the consultation of historians. In order to create visual reproducibility we are explaining the detailed text prompts, their limitations and how to cope with resulting errors of the human physiognomy. Finally, we are briefly describing the application of the animated and talking generated historic characters in an immersive interactive WebXR environment. The XR experience is presented in web browsers on smartphones, tablets and XR headsets and the underlying software is based on the open-source framework Aframe. Our paper will describe the process, the results and the limitations in detail. Furthermore, we will provide a flow chart of the tool pipeline with visual examples of these aspects. The animations and voices of the historic characters will be demonstrated in videos of the XR application. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.},
keywords = {Bavaria, Cultural heritage, Cultural heritages, Extended reality (XR), Generative AI, Historical characters, Immersive, Media production, Open source software, Open systems, Pipelines, Reproducibilities, Smart phones, Virtual representations, Web browsers},
pubstate = {published},
tppubtype = {inproceedings}
}
In our project, we aimed to create historically authentic and vivid virtual representations of historic personalities that are connected to the regional Fichtelgebirge (Bavaria, Germany) to support the storytelling of our immersive XR applications. We are describing the tools in detail, the process of the tool chain and the resulting media. Next, we are discussing the challenges in media production like historical correctness and the consultation of historians. In order to create visual reproducibility we are explaining the detailed text prompts, their limitations and how to cope with resulting errors of the human physiognomy. Finally, we are briefly describing the application of the animated and talking generated historic characters in an immersive interactive WebXR environment. The XR experience is presented in web browsers on smartphones, tablets and XR headsets and the underlying software is based on the open-source framework Aframe. Our paper will describe the process, the results and the limitations in detail. Furthermore, we will provide a flow chart of the tool pipeline with visual examples of these aspects. The animations and voices of the historic characters will be demonstrated in videos of the XR application. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Taheri, M.; Tan, K.
Enhancing Presentation Skills: A Virtual Reality-Based Simulator with Integrated Generative AI for Dynamic Pitch Presentations and Interviews Proceedings Article
In: L.T., De Paolis; P., Arpaia; M., Sacco (Ed.): Lect. Notes Comput. Sci., pp. 360–366, Springer Science and Business Media Deutschland GmbH, 2024, ISBN: 03029743 (ISSN); 978-303171706-2 (ISBN).
Abstract | Links | BibTeX | Tags: Adversarial machine learning, AI feedback, Contrastive Learning, Digital elevation model, Dynamic pitch, Federated learning, feedback, Generative adversarial networks, Iterative practice, Language Model, Open source language, Open source software, Presentation skills, Simulation Design, Spoken words, Trial and error, Virtual environments, Virtual reality based simulators
@inproceedings{taheri_enhancing_2024,
title = {Enhancing Presentation Skills: A Virtual Reality-Based Simulator with Integrated Generative AI for Dynamic Pitch Presentations and Interviews},
author = {M. Taheri and K. Tan},
editor = {De Paolis L.T. and Arpaia P. and Sacco M.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85204618832&doi=10.1007%2f978-3-031-71707-9_30&partnerID=40&md5=fd649ec5c0e2ce96593fe8a129e94449},
doi = {10.1007/978-3-031-71707-9_30},
isbn = {03029743 (ISSN); 978-303171706-2 (ISBN)},
year = {2024},
date = {2024-01-01},
booktitle = {Lect. Notes Comput. Sci.},
volume = {15027 LNCS},
pages = {360–366},
publisher = {Springer Science and Business Media Deutschland GmbH},
abstract = {Presenting before an audience presents challenges throughout preparation and delivery, necessitating tools to securely refine skills securely. Interviews mirror presentations, showcasing oneself to convey qualifications. Virtual environments offer safe spaces for trial and error, crucial for iterative practice without emotional distress. This research proposes a Virtual Reality-Based Dynamic Pitch Simulation with Integrated Generative AI to effectively enhance presentation skills. The simulation converts spoken words to text, then uses AI to generate relevant questions for practice. Benefits include realistic feedback and adaptability to user proficiency. Open-source language models evaluate content, coherence, and delivery, offering personalized challenges. This approach supplements learning, enhancing presentation skills effectively. Voice-to-text conversion and AI feedback create a potent pedagogical tool, fostering a prompt feedback loop vital for learning effectiveness. Challenges in simulation design must be addressed for robustness and efficacy. The study validates these concepts by proposing a real-time 3D dialogue simulator, emphasizing the importance of continual improvement in presentation skill development. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.},
keywords = {Adversarial machine learning, AI feedback, Contrastive Learning, Digital elevation model, Dynamic pitch, Federated learning, feedback, Generative adversarial networks, Iterative practice, Language Model, Open source language, Open source software, Presentation skills, Simulation Design, Spoken words, Trial and error, Virtual environments, Virtual reality based simulators},
pubstate = {published},
tppubtype = {inproceedings}
}
Presenting before an audience presents challenges throughout preparation and delivery, necessitating tools to securely refine skills securely. Interviews mirror presentations, showcasing oneself to convey qualifications. Virtual environments offer safe spaces for trial and error, crucial for iterative practice without emotional distress. This research proposes a Virtual Reality-Based Dynamic Pitch Simulation with Integrated Generative AI to effectively enhance presentation skills. The simulation converts spoken words to text, then uses AI to generate relevant questions for practice. Benefits include realistic feedback and adaptability to user proficiency. Open-source language models evaluate content, coherence, and delivery, offering personalized challenges. This approach supplements learning, enhancing presentation skills effectively. Voice-to-text conversion and AI feedback create a potent pedagogical tool, fostering a prompt feedback loop vital for learning effectiveness. Challenges in simulation design must be addressed for robustness and efficacy. The study validates these concepts by proposing a real-time 3D dialogue simulator, emphasizing the importance of continual improvement in presentation skill development. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.
Michael, Z.; Gemeinhardt, J.; Moritz, K.
Interactive WebXR Hypertext Storytelling for Cultural Heritage Proceedings Article
In: C., Atzenbeck; J., Rubart (Ed.): Proc. Workshop Hum. Factors Hypertext, Hum. - Assoc. ACM Conf. Hypertext Soc. Media ,HT, Association for Computing Machinery, Inc, 2024, ISBN: 979-840071120-6 (ISBN).
Abstract | Links | BibTeX | Tags: 2D textures, 3D modeling, 3D models, 3d-modeling, Cultural heritage, Cultural heritages, Extended reality (XR), Generative AI, History, HTTP, Hypertext, Hypertext systems, Immersive, Machine-learning, Open source software, Open systems, Scene structure, Three dimensional computer graphics, Virtual environments, Virtual Reality, Web browsers
@inproceedings{michael_interactive_2024,
title = {Interactive WebXR Hypertext Storytelling for Cultural Heritage},
author = {Z. Michael and J. Gemeinhardt and K. Moritz},
editor = {Atzenbeck C. and Rubart J.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85211623904&doi=10.1145%2f3679058.3688635&partnerID=40&md5=60aad5a9a95e52c3fff51ebb6f670bd6},
doi = {10.1145/3679058.3688635},
isbn = {979-840071120-6 (ISBN)},
year = {2024},
date = {2024-01-01},
booktitle = {Proc. Workshop Hum. Factors Hypertext, Hum. - Assoc. ACM Conf. Hypertext Soc. Media ,HT},
publisher = {Association for Computing Machinery, Inc},
abstract = {We are presenting our approach for interactive cultural heritage storytelling in WebXR. Therefore, we are describing our scenes’ structure consisting of (stylized) photospheres of the historic locations, 3D models of 3D-scanned historic artifacts and animated 2D textures of historic characters generated with a machine learning toolset. The result is a platform-independent web-application in an immersive interactive WebXR environment running in browsers on PCs, tablets, phones and XR headsets thanks to the underlying software based on the open-source framework A-Frame. Our paper describes the process, the results and the limitations in detail. The resulting application, designed for the Fichtelgebirge region in Upper Franconia, Germany, offers users an immersive digital time travel experience in the virtual space and within a museum setting connecting real artifacts and virtual stories. © 2024 Copyright held by the owner/author(s).},
keywords = {2D textures, 3D modeling, 3D models, 3d-modeling, Cultural heritage, Cultural heritages, Extended reality (XR), Generative AI, History, HTTP, Hypertext, Hypertext systems, Immersive, Machine-learning, Open source software, Open systems, Scene structure, Three dimensional computer graphics, Virtual environments, Virtual Reality, Web browsers},
pubstate = {published},
tppubtype = {inproceedings}
}
We are presenting our approach for interactive cultural heritage storytelling in WebXR. Therefore, we are describing our scenes’ structure consisting of (stylized) photospheres of the historic locations, 3D models of 3D-scanned historic artifacts and animated 2D textures of historic characters generated with a machine learning toolset. The result is a platform-independent web-application in an immersive interactive WebXR environment running in browsers on PCs, tablets, phones and XR headsets thanks to the underlying software based on the open-source framework A-Frame. Our paper describes the process, the results and the limitations in detail. The resulting application, designed for the Fichtelgebirge region in Upper Franconia, Germany, offers users an immersive digital time travel experience in the virtual space and within a museum setting connecting real artifacts and virtual stories. © 2024 Copyright held by the owner/author(s).
2016
Scianna, Andrea; Guardi, Marcello La; Scaduto, Maria Laura
Definition of a workflow for web browsing of 3D models in archaeology Journal Article
In: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 10059 LNCS, pp. 41–52, 2016, (Publisher: Springer Verlag).
Abstract | Links | BibTeX | Tags: Archaeological Site, Architecture, Cultural heritage, Cultural heritages, Geo-spatial, Historic Preservation, History, HTML, HTML5, Open source software, Three dimensional computer graphics, Virtual Reality, Web browsers, Web-based visualization, WebGL
@article{scianna_definition_2016,
title = {Definition of a workflow for web browsing of 3D models in archaeology},
author = {Andrea Scianna and Marcello La Guardi and Maria Laura Scaduto},
editor = {Rajcic V. Ioannides M. Grussenmeyer P.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84994823984&doi=10.1007%2f978-3-319-48974-2_6&partnerID=40&md5=bdece3b7a08d728dd5398481f8e983ff},
doi = {10.1007/978-3-319-48974-2_6},
year = {2016},
date = {2016-01-01},
journal = {Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)},
volume = {10059 LNCS},
pages = {41–52},
abstract = {The Cultural Heritage (CH) is a fundamental element of promotion of territories and of tourism development. Publishing 3D models of archaeological sites and their three-dimensional reconstruction on the Web is one of the best ways to spread their knowledge. However, many recent scientific researches in this field have highlighted the limitations and difficulties related to the networking of interactive 3D models. The main difficulties are related to the complexity and the size of models, which influence the access speed, and the cost of software and hardware needed for the publication on the WEB. In light of this background, this article describes the further advances of research activities carried out at GISLAB CNR-UNIPA for creating interactive 3D models of archaeological sites, accessible and navigable with a Web browser, fully compliant with HTML5. This system includes also the surrounding landscape, essential to analyze and understand the close relationship between human settlements and the surrounding geographical contexts. Such models don’t need specific app for navigation but are accessible on the WEB via the WebGL open source libraries, compliant with the most popular Web browsers (Firefox, Safari and Chrome). The system consists of a headboard multimedia platform tested on Mokarta archaeological site (Trapani, Sicily). The user can explore the 3D model of the archaeological site in its current state, its virtual reconstruction, and the historical documentation. This application has highlighted the great potential and the limits of the sharing of complex 3D models via the Web, opening new scenarios for the purpose of valorization of the archaeological heritage through the use of effective technologies and reduction of costs, opening new themes of further research. This experimentation is also a real example of an open data application. © Springer International Publishing AG 2016.},
note = {Publisher: Springer Verlag},
keywords = {Archaeological Site, Architecture, Cultural heritage, Cultural heritages, Geo-spatial, Historic Preservation, History, HTML, HTML5, Open source software, Three dimensional computer graphics, Virtual Reality, Web browsers, Web-based visualization, WebGL},
pubstate = {published},
tppubtype = {article}
}
The Cultural Heritage (CH) is a fundamental element of promotion of territories and of tourism development. Publishing 3D models of archaeological sites and their three-dimensional reconstruction on the Web is one of the best ways to spread their knowledge. However, many recent scientific researches in this field have highlighted the limitations and difficulties related to the networking of interactive 3D models. The main difficulties are related to the complexity and the size of models, which influence the access speed, and the cost of software and hardware needed for the publication on the WEB. In light of this background, this article describes the further advances of research activities carried out at GISLAB CNR-UNIPA for creating interactive 3D models of archaeological sites, accessible and navigable with a Web browser, fully compliant with HTML5. This system includes also the surrounding landscape, essential to analyze and understand the close relationship between human settlements and the surrounding geographical contexts. Such models don’t need specific app for navigation but are accessible on the WEB via the WebGL open source libraries, compliant with the most popular Web browsers (Firefox, Safari and Chrome). The system consists of a headboard multimedia platform tested on Mokarta archaeological site (Trapani, Sicily). The user can explore the 3D model of the archaeological site in its current state, its virtual reconstruction, and the historical documentation. This application has highlighted the great potential and the limits of the sharing of complex 3D models via the Web, opening new scenarios for the purpose of valorization of the archaeological heritage through the use of effective technologies and reduction of costs, opening new themes of further research. This experimentation is also a real example of an open data application. © Springer International Publishing AG 2016.
Scianna, Andrea; Guardia, Marcello La; Scaduto, Maria Laura
Sharing on web 3D models of ancient theatres. A methodological workflow Proceedings Article
In: K., Shi W. Cheng T. Brazdil (Ed.): International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, pp. 483–490, International Society for Photogrammetry and Remote Sensing, 2016.
Abstract | Links | BibTeX | Tags: 3D Modelling, Ancient theatres, Computer software, Cultural heritage, Cultural heritages, HTML, HTML5, Knowledge-sharing, Open source software, Open systems, Remote sensing, Software engineering, Theaters, Three dimensional computer graphics, Virtual Reality, Web browsers, Web services, Web-based visualization, WebGL, Websites
@inproceedings{scianna_sharing_2016,
title = {Sharing on web 3D models of ancient theatres. A methodological workflow},
author = {Andrea Scianna and Marcello La Guardia and Maria Laura Scaduto},
editor = {Shi W. Cheng T. Brazdil K.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84981276325&doi=10.5194%2fisprsarchives-XLI-B2-483-2016&partnerID=40&md5=fc85f9e4debc79d82b5ea772621e97b5},
doi = {10.5194/isprsarchives-XLI-B2-483-2016},
year = {2016},
date = {2016-01-01},
booktitle = {International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives},
volume = {41},
pages = {483–490},
publisher = {International Society for Photogrammetry and Remote Sensing},
abstract = {In the last few years, the need to share on the Web the knowledge of Cultural Heritage (CH) through navigable 3D models has increased. This need requires the availability of Web-based virtual reality systems and 3D WEBGIS. In order to make the information available to all stakeholders, these instruments should be powerful and at the same time very user-friendly. However, research and experiments carried out so far show that a standardized methodology doesn't exist. All this is due both to complexity and dimensions of geometric models to be published, on the one hand, and to excessive costs of hardware and software tools, on the other. In light of this background, the paper describes a methodological approach for creating 3D models of CH, freely exportable on the Web, based on HTML5 and free and open source software. HTML5, supporting the WebGL standard, allows the exploration of 3D spatial models using most used Web browsers like Chrome, Firefox, Safari, Internet Explorer. The methodological workflow here described has been tested for the construction of a multimedia geo-spatial platform developed for three-dimensional exploration and documentation of the ancient theatres of Segesta and of Carthage, and the surrounding landscapes. The experimental application has allowed us to explore the potential and limitations of sharing on the Web of 3D CH models based on WebGL standard. Sharing capabilities could be extended defining suitable geospatial Web-services based on capabilities of HTML5 and WebGL technology.},
keywords = {3D Modelling, Ancient theatres, Computer software, Cultural heritage, Cultural heritages, HTML, HTML5, Knowledge-sharing, Open source software, Open systems, Remote sensing, Software engineering, Theaters, Three dimensional computer graphics, Virtual Reality, Web browsers, Web services, Web-based visualization, WebGL, Websites},
pubstate = {published},
tppubtype = {inproceedings}
}
In the last few years, the need to share on the Web the knowledge of Cultural Heritage (CH) through navigable 3D models has increased. This need requires the availability of Web-based virtual reality systems and 3D WEBGIS. In order to make the information available to all stakeholders, these instruments should be powerful and at the same time very user-friendly. However, research and experiments carried out so far show that a standardized methodology doesn't exist. All this is due both to complexity and dimensions of geometric models to be published, on the one hand, and to excessive costs of hardware and software tools, on the other. In light of this background, the paper describes a methodological approach for creating 3D models of CH, freely exportable on the Web, based on HTML5 and free and open source software. HTML5, supporting the WebGL standard, allows the exploration of 3D spatial models using most used Web browsers like Chrome, Firefox, Safari, Internet Explorer. The methodological workflow here described has been tested for the construction of a multimedia geo-spatial platform developed for three-dimensional exploration and documentation of the ancient theatres of Segesta and of Carthage, and the surrounding landscapes. The experimental application has allowed us to explore the potential and limitations of sharing on the Web of 3D CH models based on WebGL standard. Sharing capabilities could be extended defining suitable geospatial Web-services based on capabilities of HTML5 and WebGL technology.
2010
Scianna, Andrea
Experimental studies for the definition of 3D geospatial web services Proceedings Article
In: S., Dragicevic S. Veenendaal B. Li (Ed.): International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, International Society for Photogrammetry and Remote Sensing, 2010, (Issue: 4W13).
Abstract | Links | BibTeX | Tags: Application programs, Computer software, Cooperative Management, Distributed database systems, Geo-spatial, Geo-Spatial Informations, Geographic data model, Geographic information, Geographic information systems, Geographical Information Systems, Geospatial web services, HTTP, Internet, Interoperability, Java programming language, Open source software, Open systems, Project management, Query processing, Social networking (online), Standard definitions, Three dimensional computer graphics, Web, Web services, Websites, World Wide Web
@inproceedings{scianna_experimental_2010,
title = {Experimental studies for the definition of 3D geospatial web services},
author = {Andrea Scianna},
editor = {Dragicevic S. Veenendaal B. Li S.},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923930269&partnerID=40&md5=eb36183ca2f0842ee0fd1a0164dc4cb0},
year = {2010},
date = {2010-01-01},
booktitle = {International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives},
volume = {38},
publisher = {International Society for Photogrammetry and Remote Sensing},
abstract = {The importance of geospatial information delivery, across Internet, is increasing more and more. But if in the last years was satisfying to get 2D geographic information, from Internet browsers, extracted by http servers supported by map servers, today users would acquire 3D information especially in some case or sectors as that of building cadastral applications or civil protection. In this case availability of 3D information could be very valuable. But behind this need there exist many important aspects that today are only partially resolved as the definition of 3D geospatial web services that are connected and are dependent on some other aspects (i.e. the standardization of 3D geographic data models). The experimentation carried out deals with these issues, trying to define a 3D web service in order to visualize and query by Internt Browser 3D model of the built environment. Actually there are few 3D data models (such as CityGML) whose standard definition process is not complete. Besides these models are built with main requirement of 3D visualization even if at different level of detail. But some sectors require a better use of geographic 3D information such as querying at different level of detail (such as at a level regarding the different building parts defined through their attributes) and 3D processing. Based on a project named "Interoperability and cooperative management of geographic, dynamic, multidimensional and distributed data with Free and Open Source GIS: Management and use of distributed 3D data by open source Web-GIS software" funded by Italian Ministry of Instruction, University and Research as Program of Relevant National Interest (PRIN 2007), it is here illustrated a part of a process, that start from the construction of a Java plugin that initially consist in reading information directly from a relational database management server with spatial extension, and ends with the construction of an application server which is based the extraction of GML 3D data, all based on the existence of a 3D geospatial web service whose definition is one the last and main goal of the research. © 2010 ISPRS Archives.},
note = {Issue: 4W13},
keywords = {Application programs, Computer software, Cooperative Management, Distributed database systems, Geo-spatial, Geo-Spatial Informations, Geographic data model, Geographic information, Geographic information systems, Geographical Information Systems, Geospatial web services, HTTP, Internet, Interoperability, Java programming language, Open source software, Open systems, Project management, Query processing, Social networking (online), Standard definitions, Three dimensional computer graphics, Web, Web services, Websites, World Wide Web},
pubstate = {published},
tppubtype = {inproceedings}
}
The importance of geospatial information delivery, across Internet, is increasing more and more. But if in the last years was satisfying to get 2D geographic information, from Internet browsers, extracted by http servers supported by map servers, today users would acquire 3D information especially in some case or sectors as that of building cadastral applications or civil protection. In this case availability of 3D information could be very valuable. But behind this need there exist many important aspects that today are only partially resolved as the definition of 3D geospatial web services that are connected and are dependent on some other aspects (i.e. the standardization of 3D geographic data models). The experimentation carried out deals with these issues, trying to define a 3D web service in order to visualize and query by Internt Browser 3D model of the built environment. Actually there are few 3D data models (such as CityGML) whose standard definition process is not complete. Besides these models are built with main requirement of 3D visualization even if at different level of detail. But some sectors require a better use of geographic 3D information such as querying at different level of detail (such as at a level regarding the different building parts defined through their attributes) and 3D processing. Based on a project named "Interoperability and cooperative management of geographic, dynamic, multidimensional and distributed data with Free and Open Source GIS: Management and use of distributed 3D data by open source Web-GIS software" funded by Italian Ministry of Instruction, University and Research as Program of Relevant National Interest (PRIN 2007), it is here illustrated a part of a process, that start from the construction of a Java plugin that initially consist in reading information directly from a relational database management server with spatial extension, and ends with the construction of an application server which is based the extraction of GML 3D data, all based on the existence of a 3D geospatial web service whose definition is one the last and main goal of the research. © 2010 ISPRS Archives.
Scianna, Andrea; Ammoscato, Alessio
3D gis data model using open source software Proceedings Article
In: A, Peled (Ed.): International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives, pp. 120–125, International Society for Photogrammetry and Remote Sensing, 2010.
Abstract | Links | BibTeX | Tags: 3-dimensional modeling, 3D Modelling, Blending, Computer software, Data visualization, Database systems, Environmental database, Environmental Technology, Free and open source softwares, Geographic information systems, Geographical Information Systems, High level languages, HTTP, Internet, Internet browsers, Internet protocols, Interoperability, Maintenance, Mapping, Maps, Open source software, Open systems, Query languages, Research management, Social networking (online), Software engineering, Spatial, Technology, Three dimensional computer graphics, Three-dimensional data, Topological information, Topology, World Wide Web
@inproceedings{scianna_3d_2010,
title = {3D gis data model using open source software},
author = {Andrea Scianna and Alessio Ammoscato},
editor = {Peled A},
url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880227655&partnerID=40&md5=502aa042af1693c18f34b5d74c4dd2bd},
year = {2010},
date = {2010-01-01},
booktitle = {International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives},
volume = {38},
pages = {120–125},
publisher = {International Society for Photogrammetry and Remote Sensing},
abstract = {Today many kinds of applications requires data containing actual three-dimensional data; fields like urban and town planning and pollution studies need 3D data, both for visualization purpose, as well as carry out many spatial analysis. This research-Management and use of distributed 3D data by open source Web-GIS software-is part of the Italian "PRIN 2007"∗ research project, aimed to build urban and suburban 3D models, and to interact with them using open source software only. Particularly free and open source software, used for the experimentation here shown, are Blender and PostGIS; the first one has been used to build and structure three-dimensional data, the second one for data allocation. These software interact using scripts, written in Python language. Buildings have been modeled upon the GIANT3D model (Geographical Interoperable Advanced Numerical Topological 3-Dimensional Model) developed in the research "PRIN 2004", regarding "Evolved structure of numerical cartography for Gis and Web-GIS". Python scripts, activated by Blender, allow to allocate data into a spatial database implemented through PostgreSQL and PostGis, that could be a remote database somewhere on the net; all geometrical and topological information, implemented in the 3D model, are so transferred in PostGIS. These information can be retrieved by Blender using other Python scripts, so Blender fully interacts with 3D data allocated in PostGIS. These data can be also accessed by many other clients, both directly using a database client, as using other protocols (like HTTP on the internet). Next step is to build an open source viewer, or a plugin for internet browsers, that allows client to visualize, explore and inquiry 3D model, retrieving data from database.},
keywords = {3-dimensional modeling, 3D Modelling, Blending, Computer software, Data visualization, Database systems, Environmental database, Environmental Technology, Free and open source softwares, Geographic information systems, Geographical Information Systems, High level languages, HTTP, Internet, Internet browsers, Internet protocols, Interoperability, Maintenance, Mapping, Maps, Open source software, Open systems, Query languages, Research management, Social networking (online), Software engineering, Spatial, Technology, Three dimensional computer graphics, Three-dimensional data, Topological information, Topology, World Wide Web},
pubstate = {published},
tppubtype = {inproceedings}
}
Today many kinds of applications requires data containing actual three-dimensional data; fields like urban and town planning and pollution studies need 3D data, both for visualization purpose, as well as carry out many spatial analysis. This research-Management and use of distributed 3D data by open source Web-GIS software-is part of the Italian "PRIN 2007"∗ research project, aimed to build urban and suburban 3D models, and to interact with them using open source software only. Particularly free and open source software, used for the experimentation here shown, are Blender and PostGIS; the first one has been used to build and structure three-dimensional data, the second one for data allocation. These software interact using scripts, written in Python language. Buildings have been modeled upon the GIANT3D model (Geographical Interoperable Advanced Numerical Topological 3-Dimensional Model) developed in the research "PRIN 2004", regarding "Evolved structure of numerical cartography for Gis and Web-GIS". Python scripts, activated by Blender, allow to allocate data into a spatial database implemented through PostgreSQL and PostGis, that could be a remote database somewhere on the net; all geometrical and topological information, implemented in the 3D model, are so transferred in PostGIS. These information can be retrieved by Blender using other Python scripts, so Blender fully interacts with 3D data allocated in PostGIS. These data can be also accessed by many other clients, both directly using a database client, as using other protocols (like HTTP on the internet). Next step is to build an open source viewer, or a plugin for internet browsers, that allows client to visualize, explore and inquiry 3D model, retrieving data from database.