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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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PHOTOGRAMMETRY dRIVEN TOOLS TO SUPPORT THE RESTORATION OF OPEN-AIR BRONZE SURFACES OF SCULPTURES: AN INTEGRATEd SOLUTION STARTING FROM THE EXPERIENCE OF THE NEPTUNE FOUNTAIN IN BOLOGNA

PHOTOGRAMMETRY DRIVEN TOOLS TO SUPPORT THE RESTORATION OF OP...

引用

conference on 3d virtual reconstruction and visualization of complex architectures

作者： Apollonio, F. I. Gaiani, M. Basilissi, W. Rivaroli, L. Univ Bologna Dept Architecture Alma Mater Studiorum Bologna Italy Ist Super Conservaz & Restauro Rome Italy

Checking the irreversible process of clean-up is a delicate task that requires a work of synthesis between theoretical knowledge and practical experience, to define an effective operating protocol on a limited patch area to be extended later to the entire artefact's surface. In this paper, we present a new, quick, semi-automated 3d photogrammetry-based solution to support restorers in the open-air bronze artwork cleaning from corrosion and weathering decay. The solution allows the conservators to assess in real time and with a high level of fidelity in colour and shape, the 'surfaces' to be cleaned before, during and after the clear-out treatment. The solution besides allows an effective and valuable support tool for restorers to identify the original layer of the bronze surface, developed and validated during the ongoing restoration of the Neptune Fountain in Bologna.

关键词： Photogrammetry Conservation 3d models Colour management Physically-based rendering Bronze cleaning

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INTEGRATEd dATA CAPTURING REQUIREMENTS FOR 3d SEMANTIC MOdELLING OF CULTURAL HERITAGE: THE INCEPTION PROTOCOL

INTEGRATED DATA CAPTURING REQUIREMENTS FOR 3D SEMANTIC MODEL...

引用

conference on 3d virtual reconstruction and visualization of complex architectures

作者： di Giulio, R. Maietti, F. Piaia, E. Medici, M. Ferrari, F. Turillazzi, B. Univ Ferrara Dept Architecture Via Ghiara 36 I-44121 Ferrara Italy Consorzio Futuro Ric Via Saragat 1 I-44122 Ferrara Italy

The generation of high quality 3d models can be still very time-consuming and expensive, and the outcome of digital reconstructions is frequently provided in formats that are not interoperable, and therefore cannot be easily accessed. This challenge is even more crucial for complex architectures and large heritage sites, which involve a large amount of data to be acquired, managed and enriched by metadata. In this framework, the ongoing EU funded project INCEPTION - Inclusive Cultural Heritage in Europe through 3d semantic modelling proposes a workflow aimed at the achievements of efficient 3d digitization methods, post-processing tools for an enriched semantic modelling, web-based solutions and applications to ensure a wide access to experts and non-experts. In order to face these challenges and to start solving the issue of the large amount of captured data and time-consuming processes in the production of 3d digital models, an Optimized data Acquisition Protocol (dAP) has been set up. The purpose is to guide the processes of digitization of cultural heritage, respecting needs, requirements and specificities of cultural assets.

关键词： Cultural Heritage 3d data capturing Semantic modelling data acquisition protocol Accuracy Reliability

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3d MOdELLING WITH THE SAMSUNG GEAR 360

3D MODELLING WITH THE SAMSUNG GEAR 360

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conference on 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 Terr Lecco Via Previati 1-C Lecce Italy

The Samsung Gear 360 is a consumer grade spherical camera able to capture photos and videos. The aim of this work is to test the metric accuracy and the level of detail achievable with the Samsung Gear 360 coupled with digital modelling techniques based on photogrammetry/computer vision algorithms. Results demonstrate that the direct use of the projection generated inside the mobile phone or with Gear 360 Action direction (the desktop software for post-processing) have a relatively low metric accuracy. As results were in contrast with the accuracy achieved by using the original fisheye images (front and rear facing images) in photogrammetric reconstructions, an alternative solution to generate the equirectangular projections was developed. A calibration aimed at understanding the intrinsic parameters of the two lenses camera, as well as their relative orientation, allowed one to generate new equirectangular projections from which a significant improvement of geometric accuracy has been achieved.

关键词： 3d modelling Accuracy Automation Bundle adjustment Calibration Fisheye Surface extraction

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3d SURVEYING ANd GEOMETRIC ASSESSMENT OF A GOTHIC NAVE VAULTING FROM POINT CLOUdS

3D SURVEYING AND GEOMETRIC ASSESSMENT OF A GOTHIC NAVE VAULT...

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conference on 3d virtual reconstruction and visualization of complex architectures

作者： Costa-Jover, A. Lluis i Ginovart, J. Coll-Pla, S. Lopez Piquer, M. Samper-Sosa, A. Moreno Garcia, d. Solis Lorenzo, A. M. Univ Rovira & Virgili Dept Architecture Ave Univ 1Campus Bellissens Reus 43204 Spain Univ Int Catalunya Sch Architecture Barcelona C Immaculada 22Edifici Alfa Barcelona 08017 Spain

The development of massive data captures techniques (MdC) in recent years, such as the Terrestrial laser Scanner (TLS), raises the possibility of developing new assessment procedures for architectural heritage. The 3d models that it is able to obtain is a great potential tool, both for conservation purposes and for historical and architectural studies. The paper proposes a simple, non-invasive methodology for the assessment of masonry vaults from point clouds which makes it possible to obtain relevant data about the formal anomalies. The methodology is tested in Tortosa's Gothic Cathedral's vaults, where the geometrical differences between vaults, a priori equal, are identified and related with the partially known construction phases. The procedure can be easily used on any other vaulted construction of any kind, but is especially useful to deal with the complex geometry of Gothic masonry vaults.

关键词： terrestrial laser scanner geometrical assessment gothic vaults Cathedral of Tortosa

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dYNAMIC 3d MOdELING OF A CANAL-TUNNEL USING PHOTOGRAMMETRIC ANd BATHYMETRIC dATA

DYNAMIC 3D MODELING OF A CANAL-TUNNEL USING PHOTOGRAMMETRIC ...

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conference on 3d virtual reconstruction and visualization of complex architectures

作者： Moisan, E. Heinkele, C. Charbonnier, P. Foucher, P. Grussenmeyer, P. Guillemin, S. Koehl, M. Cerema Est Lab Strasbourg 11 Rue Jean MentelinBP 9 F-67035 Strasbourg France INSA Strasbourg Photogrammetry & Geomat Grp ICube Lab UMR 7357 24 Blvd Victoire F-67084 Strasbourg France

This contribution introduces an original method for dynamically surveying the vault and underwater parts of a canal-tunnel for 3d modeling. The recording system, embedded on a barge, is composed of cameras that provide images of the above-water part of the tunnel, and a sonar that acquires underwater 3d profiles. In this contribution we propose to fully exploit the capacities of photogrammetry to deal with the issue of geo-referencing data in the absence of global positioning system (GPS) data. More specifically, we use it both for reconstructing the vault and side walls of the tunnel in 3d and for estimating the trajectory of the boat, which is necessary to rearrange sonar profiles to form the 3d model of the canal. We report on a first experimentation carried out inside a canal-tunnel and show promising preliminary results that illustrate the potentialities of the proposed approach.

关键词： 3d modeling multibeam echosounder photogrammetry inspection underwater

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SURVEYING THE UNdERWATER ARCAHEOLOGICAL SITE OF CAPE GLAROS AT PAGASETIKOS GULF

SURVEYING THE UNDERWATER ARCAHEOLOGICAL SITE OF CAPE GLAROS ...

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conference on 3d virtual reconstruction and visualization of complex architectures

作者： diamanti, E. Spondylis, E. Vlachaki, F. Kolyva, E. Hellen Inst Marine Archaeol Saripolou 9 Athens 10682 Greece

The Hellenic Institute of Marine Archaeology (H. I. M. A.)(1) has been conducting an underwater archaeological research in the west coast of southern Pagasetikos Gulf, since 2000. Every year the underwater research focuses on specific archaeological targets that have been recovered during previous field campaigns. The current publication elaborates on the comprehensive documentation of the underwater archaeological site at Cape Glaros, during the 2015 field season, under the direction of the archaeologist Elias Spondylis. The 2015 research campaign was conducted within the framework of the ITACA-Innovation Technologies and Applications for Coastal Archaeological sites European Project (FP7/2007-2013, GA No 606805), at two archaeological sites, namely the Cape Glaros and Metohi. It was among the most important challenges of the project to successfully produce the detailed and accurate 3d mapping of the Cape Glaros site that covers an extended area. Four large concentrations of pottery finds and numerous anchors of different typology have been recorded, that can be dated from the late Hellenistic to the Byzantine periods. This challenge was tackled through the simultaneous implementation of three recording methods;photogrammetry, geodesy and conventional architectural mapping. The workflow of the documentation process, including data acquisition, processing and graphic visualization, along with the derived results are presented below.

关键词： Maritime Archaeology Coastal Surveying Underwater Cultural Heritage Underwater Photogrammetry 3d reconstruction 3d visualization Orthophotomosaics Architectural documentation HIMA

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FLAT VERSUS HEMISPHERICAL dOME PORTS IN UNdERWATER PHOTOGRAMMETRY

FLAT VERSUS HEMISPHERICAL DOME PORTS IN UNDERWATER PHOTOGRAM...

引用

conference on 3d virtual reconstruction and visualization of complex architectures

作者： Menna, F. Nocerino, E. Remondino, F. Bruno Kessler Fdn Opt Metrol Unit 3D Trento Italy

Underwater photogrammetry, like its counterpart in 'air', has gained an increasing diffusion thanks to the availability of easy-to-use, fast and often quite inexpensive software applications. Moreover, underwater equipment that allows the use of digital cameras normally designed to work in air also in water are largely available. However, for assuring accurate and reliable 3d modelling results a profound knowledge of the employed devices as well as physical and geometric principle is even more crucial than in air. This study aims to take a step forward in understanding the effect of underwater ports in front of the photographic lens. In particular, the effect of dome or flat ports on image quality in 3d modelling applications is investigated. Experiments conducted in a semi submerged indust rial structure show that the tested flat port performs worse than the dome, providing higher image residuals and lower precision and accuracy in object space. A significant different quality per colour channel is also observed and its influence on achievable processing results is discussed.

关键词： Underwater Photogrammetry Camera calibration Flat port Hemispherical dome port MTF

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RPAS ANd TLS TECNIQUES FOR ARCHAEOLOGICAL SURVEY: THE CASE STUdY OF THE ARCHAEOLOGICAL SITE OF ERACLEA MINOA (ITALY)

RPAS AND TLS TECNIQUES FOR ARCHAEOLOGICAL SURVEY: THE CASE S...

引用

conference on 3d virtual reconstruction and visualization of complex architectures

作者： Lo Brutto, M. Sciortino, R. Garraffa, A. Univ Palermo Dept Civil Environm Aerosp Mat Engn DICAM Palermo Italy

digital documentation and 3d modelling of archaeological sites are important for understanding, definition and recognition of the values of the sites and of the archaeological finds. The most part of archaeological sites are outdoor location, but a cover to preserve the ruins protects often parts of the sites. The possibility to acquire data with different techniques and merge them by using a single reference system allows creating multi-parties models in which 3d representations of the individual objects can be inserted. The paper presents the results of a recent study carried out by Geomatics Laboratory of University of Palermo for the digital documentation and 3d modelling of Eraclea Minoa archaeological site. This site is located near Agrigento, in the south of Sicily (Italy) and is one of the most famous ancient Greek colonies of Sicily. The paper presents the results of the integration of different data source to survey the Eraclea Minoa archaeological site. The application of two highly versatile recording systems, the TLS (Terrestrial Laser Scanning) and the RPAS (Remotely Piloted Aircraft System), allowed the Eraclea Minoa site to be documented in high resolution and with high accuracy. The integration of the two techniques has demonstrated the possibility to obtain high quality and accurate 3d models in archaeological survey.

关键词： Archaeological survey Terrestrial Laser Scanner RPAS Photogrammetry 3d Modelling

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A PROMPT METHOdOLOGY TO GEOREFERENCE complex HYPOGEA ENVIRONMENTS

A PROMPT METHODOLOGY TO GEOREFERENCE COMPLEX HYPOGEA ENVIRON...

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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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AUGMENTEd REALITY IN ARCHITECTURE: REBUILdING ARCHEOLOGICAL HERITAGE

AUGMENTED REALITY IN ARCHITECTURE: REBUILDING ARCHEOLOGICAL ...

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conference on 3d virtual reconstruction and visualization of complex architectures

作者： de la Fuente Prieto, J. Castano Perea, E. Labrador Arroyo, F. Univ Alcala Dept Filol Comunicac & Documentac C Trinidad 5 Madrid 28801 Spain Univ Alcala Dept Arquitectura C Santa Ursula 8 Madrid 28801 Spain Univ Rey Juan Carlos Dept CC Educ Lenguaje Cultura & Artes CC Hist Jurid & Humanist & Lenguas Modernas Paseo Artilleros S-N Madrid 28320 Spain

With the development in recent years of augmented reality and the appearance of new mobile terminals and storage bases on-line, we find the possibility of using a powerful tool for transmitting architecture. This paper analyzes the relationship between Augmented Reality and Architecture. Firstly, connects the theoretical framework of both disciplines through the Representation concept. Secondly, describes the milestones and possibilities of Augmented Reality in the particular field of archaeological reconstruction. And lastly, once recognized the technology developed, we face the same analysis from a critical point of view, assessing their suitability to the discipline that concerns us is the architecture and within archeology.

关键词： Augmented Reality Architectural Representation Archaeological reconstruction Cultural Heritage

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