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检索条件"任意字段=Conference on 3D Virtual Reconstruction and Visualization of Complex Architectures"

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POINT CLOUd visualization IN AN OPEN SOURCE 3d GLOB3 4

POINT CLOUD VISUALIZATION IN AN OPEN SOURCE 3D GLOB3

引用

4th ISPRS International Workshop 3d-ARCH - 3d virtual reconstruction and visualization of complex architectures

作者： de La Calle, M. Gomez-deck, d. Koehler, O. Pulido, F. IGO SOFTWARE I D Dept Hannover Germany

during the last years the usage of 3d applications in GIS is becoming more popular. Since the appearance of Google Earth, users are familiarized with 3d environments. On the other hand, nowadays computers with 3d acceleration are common, broadband access is widespread and the public information that can be used in GIS clients that are able to use data from the Internet is constantly increasing. There are currently several libraries suitable for this kind of applications. Based on these facts, and using libraries that are already developed and connected to our own developments, we are working on the implementation of a real 3d GIS with analysis capabilities. Since a 3d GIS such as this can be very interesting for tasks like LidAR or Laser Scanner point clouds rendering and analysis, special attention is given to get an optimal handling of very large data sets. Glob3 will be a multidimensional GIS in which 3d point clouds could be explored and analysed, even if they are consist of several million points. The latest addition to our visualization libraries is the development of a points cloud server that works regardless of the cloud's size. The server receives and processes petitions from a 3d client (for example glob3, but could be any other, such as one based on WebGL) and delivers the data in the form of pre-processed tiles, depending on the required level of detail.

关键词： Glob3 Point Clouds Level of detail GIS 3d Point cloud visualization Euclid

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UAV FOR MAPPING HISTORIC BUILdINGS: FROM 3d MOdELLING TO BIM 8

UAV FOR MAPPING HISTORIC BUILDINGS: FROM 3D MODELLING TO BIM

引用

8th International Workshop on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Karachaliou, E. Georgiou, E. Psaltis, d. Stylianidis, E. Aristotle Univ Thessaloniki Sch Spatial Planning & Dev Fac Engn Thessaloniki 54124 Greece

Preventive actions of cultural heritage continuously emerge in order to preserve the identity of the respective civilizations, retain its cultural significance and ensure its accessibility to present and future generations. 3d geomatics technologies along with UAV systems are widely used for documenting existing structures especially in difficult-to-access areas. In addition, Building Information Modelling (BIM) for cultural heritage gains ground towards the sustainable management, update and maintenance of the information. To this context, the current work generates a Historic Building Information Modelling (HBIM) model of the "Averof's Museum of Neohellenic art" located in Metsovo, Greece, by using UAV photogrammetry techniques and additional information derived from the architecture designs of the buildings.

关键词： cultural heritage UAV photogrammetry HBIM

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3d MOdELING WITH 5K 360° VIdEOS 9

3D MODELING WITH 5K 360° VIDEOS

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9th International Workshop on 3d-ARCH 3d virtual reconstruction and visualization of complex architectures

作者： Barazzetti, L. Previtali, M. . Roncoroni, F. Politecn Milan Dept Architecture Built Environm & Construct Engn Piazza Leonardo da Vinci 32 Milan Italy Polo Territoriale Lecco Via Previati 1-C I-23900 Milan Italy

Video acquisition with 360 degrees (spherical) cameras is becoming increasingly popular for the opportunity to capture the entire scene around the user in a relatively short time. The method can also be attractive for photogrammetric applications. As the overlap between consecutive frames is undoubtedly guaranteed, 3d models can be generated with an automated processing workflow. The paper illustrates the results achieved with 5k 360 degrees videos captured with different Insta360 cameras. As the number of frames can become large, two complementary solutions are proposed to provide approximate initial exterior orientation parameters: the integration of the trajectory captured through GNSS, and the creation of an acquisition plan with a GIS-based application. The availability of approximated EO parameters provides a visibility map between the frames and reduces the computational cost during image matching. Experimental results demonstrate that such preliminary information is necessary for large datasets. Indeed, the photogrammetric processing of the entire dataset without the proposed preliminary EO parameters resulted in unreliable or incomplete orientation results.

关键词： 360 degrees 5k Accuracy Automation Low-cost sensor Orientation Video

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GENERATION OF GIGAPIXEL ORTHOPHOTO FOR THE MAINTENANCE OF complex BUILdINGS. CHALLENGES ANd LESSON LEARNT 8

GENERATION OF GIGAPIXEL ORTHOPHOTO FOR THE MAINTENANCE OF CO...

引用

8th International Workshop on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Perfetti, L. Fassi, F. Gulsan, H. Politecn Milan 3D Survey Grp Dept Architecture Built Environm & Construct Engn Milan Italy

This study is part of the "Milan Cathedral Survey project". It is a three years long research project with the aim of surveying the entire cathedral in 3d with different techniques (mainly photogrammetry and laser scanning). The goal is to renew the architectonic drawings (sections elevations and plans) to obtain new updated and certificated measurements of the cathedral, as requested by Veneranda Fabbrica del duomo, and to produce the basis on which to build a future 3d BIM (Building Information Model) system implementation. In this paper, we would like to examine in depth the survey process of the exterior elevations of the cathedral carried out using photogrammetry as the main survey technique for orthophotos production. The case studies here presented have the goal of underlying challenges, discussing decisions and approaches, describing the followed pipeline and of defining a standard method that can be followed to produce gigapixel orthophotos of complex cultural heritages.

关键词： Photogrammetry orthophoto architecture modelling Cultural Heritage 3d survey

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AUGMENTEd TURIN BAROQUE ATRIA: AR EXPERIENCES FOR ENHANCING CULTURAL HERITAGE 8

AUGMENTED TURIN BAROQUE ATRIA: AR EXPERIENCES FOR ENHANCING ...

引用

8th International Workshop on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Palma, V. Spallone, R. Vitali, M. Politecn Torino FULL Turin Italy Politecn Torino Dept Architecture & Design Turin Italy

This paper presents the most recent developments in a project aimed to the documentation, storage and dissemination of the cultural heritage. The subject of the project are more than 70 Baroque atria in Turin, recognized by critics for their particular unitary vaulted systems Our research team is currently working on digitizing documents and studying ways to enhance and share these results through ICT. In particular, we want to explore possibilities for recognizing and tracing three-dimensional objects in augmented reality (AR) applications connected to the collected data. Recent developments in this field relate to the technology available on widespread mobile devices such as tablets and smartphones, allowing for real-time 3d scanning. Using software prototypes, we want to introduce some problems involved in integrating this technology into digital archives.

关键词： Augmented Reality Cultural Heritage 3d Modelling Open Source Baroque Atria

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A PROMPT METHOdOLOGY TO GEOREFERENCE complex HYPOGEA ENVIRONMENTS

A PROMPT METHODOLOGY TO GEOREFERENCE COMPLEX HYPOGEA ENVIRON...

引用

conference on 3d virtual reconstruction and visualization of complex architectures

作者： Troisi, S. Baiocchi, V. del Pizzo, S. Giannone, F. Parthenope Univ Naples Ctr Direz Isola C4 Naples Italy Sapienza Univ Rome DICEA Via Eudossiana 18 I-00184 Rome Italy Niccolo Cusano Univ Via Don Carlo Gnocchi 3 I-00166 Rome Italy

Actually complex underground structures and facilities occupy a wide space in our cities, most of them are often unsurveyed;cable duct, drainage system are not exception. Furthermore, several inspection operations are performed in critical air condition, that do not allow or make more difficult a conventional survey. In this scenario a prompt methodology to survey and georeferencing such facilities is often indispensable. A visual based approach was proposed in this paper;such methodology provides a 3d model of the environment and the path followed by the camera using the conventional photogrammetric/Structure from motion software tools. The key-role is played by the lens camera;indeed, a fisheye system was employed to obtain a very wide field of view (FOV) and therefore high overlapping among the frames. The camera geometry is in according to a forward motion along the axis camera. Consequently, to avoid instability of bundle adjustment algorithm a preliminary calibration of camera was carried out. A specific case study was reported and the accuracy achieved.

关键词： Photogrammetry Videogrammetry Structure from Motion Cultural Heritage 3d modeling Georeferencing Visual Navigation

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A REVIEW OF RECORdING TECHNOLOGIES FOR dIGITAL FABRICATION IN HERITAGE CONSERVATION 8

A REVIEW OF RECORDING TECHNOLOGIES FOR DIGITAL FABRICATION I...

引用

8th International Workshop on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Weigert, A. dhanda, A. Cano, J. Bayod, C. Fai, S. Quintero, M. Santana Carleton Univ CIMS Ottawa ON Canada Factum Arte Madrid Spain

digital tools have brought new techniques for recording and fabrication allowing for the augmentation of traditional processes in repairs and restorations. Traditional mechanical and chemical techniques require physical contact to the artefacts of interest, while LidAR Scanning, photogrammetry and structured light scanning provide non-invasive solutions. Analog recording technologies have always informed fabrication processes, but contemporary digital recording can produce complete geometry for fabrication. In this paper, we discuss recording and fabrication technologies and how they have been applied for heritage conservation.

关键词： digital Fabrication digital documentation Photogrammetry Laser Scanning 3d scanner 3d Printing CNC Heritage Conservation

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MULTI-MOdAL dIGITAL dOCUMENTATION ANd visualization OF THE UNESCO PAINTEd CHURCHES IN TROOdOS (CYPRUS) 9

MULTI-MODAL DIGITAL DOCUMENTATION AND VISUALIZATION OF THE U...

引用

9th International Workshop on 3d-ARCH 3d virtual reconstruction and visualization of complex architectures

作者： Abate, d. Faka, M. Toumbas, K. Bakirtzis, N. Mitchell, W. Colls, K. Sturdy-Colls, C. Andreas Pittas Art Characterizat Labs APAC Labs Cyprus Inst Sci & Technol Archaeol & Culture Res Nicosia Cyprus Staffordshire Univ Ctr Archaeol Stoke On Trent Staffs England

In 1985, the World Heritage Committee inscribed the site "Painted Churches in the Troodos Region" of the Republic of Cyprus on the UNESCO World Heritage List. The latter included nine Byzantine and Post Byzantine Churches to which a tenth church was added in 2001. In the framework of the IH-AT project, all the churches and the premises in their proximities were analysed using a wide array of non-destructive digital methodologies coupled with more traditional art-historical studies. Image- and Range-based techniques were used to document all the morphological features of the buildings with the final goal of understanding their humble architecture. Additionally, a Ground Penetrating Radar (GPR) was performed to investigate the presence of buried structures that, according to historical sources, were once surrounding the religious sites. For the exploitation and visualization of the extensive database by the scientific community and the public at large, a web portal comprised of reliable and efficient technology-ready tools have been developed. The proposed methodology was implemented to provide new insights on the churches' architectural features;confirm the presence or absence of buried remains of archaeological interest;and help heritage professionals, with lack or minimal programming skills, to customize online visualizations of 3d interactive models.

关键词： Terrestrial Laser Scanning Terrestrial Photogrammetry Aerial Photogrammetry Ground Penetrating Radar Web visualization

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EUROPEANA ANd 3d 4

EUROPEANA AND 3D

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4th ISPRS International Workshop 3d-ARCH - 3d virtual reconstruction and visualization of complex architectures

作者： Pletinckx, daniel Visual Dimens Bvba B-9700 Ename Belgium

The current 3d hype creates a lot of interest in 3d. People go to 3d movies, but are we ready to use 3d in our homes, in our offices, in our communication? Are we ready to deliver real 3d to a general public and use interactive 3d in a meaningful way to enjoy, learn, communicate? The CARARE project is realising this for the moment in the domain of monuments and archaeology, so that real 3d of archaeological sites and European monuments will be available to the general public by 2012. There are several aspects to this endeavour. First of all is the technical aspect of flawlessly delivering 3d content over all platforms and operating systems, without installing software. We have currently a working solution in PdF, but HTML5 will probably be the future. Secondly, there is still little knowledge on how to create 3d learning objects, 3d tourist information or 3d scholarly communication. We are still in a prototype phase when it comes to integrate 3d objects in physical or virtual museums. Nevertheless, Europeana has a tremendous potential as a multi-facetted virtual museum. Finally, 3d has a large potential to act as a hub of information, linking to related 2d imagery, texts, video, sound. We describe how to create such rich, explorable 3d objects that can be used intuitively by the generic Europeana user and what metadata is needed to support the semantic linking.

关键词： Europeana 3d PdF interactivity 3d publishing resource exploration explorative interface learning objects

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RELIABILITY OF dTMS OBTAINEd WITH MOBILE FAST SURVEYS TECHNIQUES 9

RELIABILITY OF DTMS OBTAINED WITH MOBILE FAST SURVEYS TECHNI...

引用

9th International Workshop on 3d-ARCH 3d virtual reconstruction and visualization of complex architectures

作者： La Placa, Silvia doria, Elisabetta Univ Pavia DICAr Via Ferrata 3 I-27100 Pavia Italy

The contribution addresses the issue of the integrated survey aimed at three-dimensional modeling for the documentation of different types of terrain through the analysis of two case studies located in the province of Pavia - Italy. The techniques of aerial photogrammetric acquisition SfM (UAVs), Terrestrial Laser Scanner (TLS) and Mobile (MLS) are now consolidated and widely used, managing to meet the needs of documentation of land levelling, monitoring, and analysis of landslide volumes. The two case studies present difficulties due to a strong inclination of the land and extensive presence of vegetation in the first case and to a strong presence of agricultural canalizations in the second case. The data processing phase focused on the comparison between MLS and close-range photogrammetry, while the acquisitions from TLS were used as control data. This acquisition method allows avoiding the process of approximation and reconstruction of the dTM under the vegetation, ensuring the correctness of the data relating to the ground course. The database allows the generation of highly reliable dTMs using specific point cloud modeling and processing software. Fast survey instruments are ideal in large areas or in hilly areas where sub-vertical sections and covered by vegetation are often present, difficult to detect only with close-range photogrammetry.

关键词： fast survey ground modelling landslide water canalizations dTM

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