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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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FROM CAd TO dIGITAL MOdELING: THE NECESSARY HYBRIdIZATION OF PROCESSES 4

FROM CAD TO DIGITAL MODELING: THE NECESSARY HYBRIDIZATION OF...

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

作者： Massari, Giovanna A. Bernardi, Fabio Cristofolini, Alberto Univ Trento Fac Engn I-38123 Trento Italy

The essay deals with the themes of digital representation of architecture starting from several years of teaching activity which is growing within the course of Automatic design of the degree course in Engineering/Architecture in the University of Trento. With the development of CAd systems, architectural representation lies less in the tracking of a simple graph and drawn deeper into a series of acts of building a complex digital model, which can be used as a data base on which to report all the stages of project and interpretation work, and from which to derive final drawings and documents. The advent of digital technology has led to increasing difficulty in finding explicit connections between one type of operation and the subsequent outcome;thereby increasing need for guidelines, the need to understand in order to precede the changes, the desire not to be overwhelmed by uncontrollable influences brought by technological hardware and software systems to use only in accordance with the principle of maximum productivity. Formation occupies a crucial role because has the ability to direct the profession toward a thoughtful and selective use of specific applications;teaching must build logical routes in the fluid world of info-graphics and the only way to do so is to describe its contours through method indications: this will consist in understanding, studying and divulging what in its mobility does not change, as procedural issues, rather than what is transitory in its fixity, as manual questions.

关键词： 3d modelling Building Computer simulation Education Interoperability Object reconstruction

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A COMPARISON AMONG dIFFERENT OPTIMIZATION LEVELS IN 3d MULTI-SENSOR MOdELS. A TEST CASE IN EMERGENCY CONTEXT: 2016 ITALIAN EARTHQUAKE

A COMPARISON AMONG DIFFERENT OPTIMIZATION LEVELS IN 3D MULTI...

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conference on 3d virtual reconstruction and visualization of complex architectures

作者： Chiabrando, F. Sammartano, G. Spano, A. Politecn Torino DAD I-10129 Turin Italy

In sudden emergency contexts that affect urban centres and built heritage, the latest Geomatics technique solutions must enable the demands of damage documentation, risk assessment, management and data sharing as efficiently as possible, in relation to the danger condition, to the accessibility constraints of areas and to the tight deadlines needs. In recent times, Unmanned Vehicle System (UAV) equipped with cameras are more and more involved in aerial survey and reconnaissance missions, and they are behaving in a very cost-effective way in the direction of 3d documentation and preliminary damage assessment. More and more UAV equipment with low-cost sensors must become, in the future, suitable in every situation of documentation, but above all in damages and uncertainty frameworks. Rapidity in acquisition times and low-cost sensors are challenging marks, and they could be taken into consideration maybe with time spending processing. The paper will analyze and try to classify the information content in 3d aerial and terrestrial models and the importance of metric and non-metric withdrawable information that should be suitable for further uses, as the structural analysis one. The test area is an experience of Team direct from Politecnico di Torino in centre Italy, where a strong earthquake occurred in August 2016. This study is carried out on a stand-alone damaged building in Pescara del Tronto (AP), with a multi-sensor 3d survey. The aim is to evaluate the contribution of terrestrial and aerial quick documentation by a SLAM based LidAR and a camera equipped multirotor UAV, for a first reconnaissance inspection and modelling in terms of level of details, metric and non-metric information.

关键词： emergency mapping 3d documentation Cultural Heritage risk multi-scale modelling multi-sensor approach UAV SfM photogrammetry SLAM information extraction data filtering point cloud post-processing

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TARGETLESS CAMERA CALIBRATION 4

TARGETLESS CAMERA CALIBRATION

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

作者： Barazzetti, L. Mussio, L. Remondino, F. Scaioni, M. Politecn Milan Dept Bldg Engn Sci & Technol I-20133 Milan Italy Politecn Milan Dept Environm Hydraul Infrastruct & Surveying Eng I-20133 Milan Italy Bruno Kessler Fdn FBK Opt Metrol Unit 3D Trento Italy

In photogrammetry a camera is considered calibrated if its interior orientation parameters are known. These encompass the principal distance, the principal point position and some Additional Parameters used to model possible systematic errors. The current state of the art for automated camera calibration relies on the use of coded targets to accurately determine the image correspondences. This paper presents a new methodology for the efficient and rigorous photogrammetric calibration of digital cameras which does not require any longer the use of targets. A set of images depicting a scene with a good texture are sufficient for the extraction of natural corresponding image points. These are automatically matched with feature-based approaches and robust estimation techniques. The successive photogrammetric bundle adjustment retrieves the unknown camera parameters and their theoretical accuracies. Examples, considerations and comparisons with real data and different case studies are illustrated to show the potentialities of the proposed methodology.

关键词： Automation Accuracy Calibration Matching Orientation

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dATA MOdELING FOR MUSEUM COLLECTIONS 8

DATA MODELING FOR MUSEUM COLLECTIONS

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

作者： Lo Turco, M. Calvano, M. Giovannini, E. C. Politecn Torino Dept Architecture & Design Turin Italy

The relationship between cultural heritage, digital technologies and visual models involves an increasingly wide area of research, oriented towards the renewal of archives and museums for the preservation and promotion of culture. Recent research activities are the result of the progressive strengthening of digital technologies and the needs of a new generation of "digital" users, which requires museums to update their means of communication using Semantic Web languages and technologies shaped by a social conceptualization of a graph-based representation of information. The growth of several digitized heritage collections increases the necessity of proper methodologies to develop a structured system able to access to these collections and the large amount of data, metadata and paradata related to the digitized objects in a structured and organized way, defining a set of collection information models (CIM), that considers not only the digitizing process but also the data collection process, layered by an Upper Ontology level structure, based on CIdOC-CRM.

关键词： 3d Modelling data Modeling Museum Collections Archival Research Paradata documentation

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development of History Learning Support System 3d virtual reconstruction and visualization of Ancient Japanese architectures 11

Development of History Learning Support System 3D Virtual Re...

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11th International conference on Computer Science & Education (ICCSE)

作者： Zhou, Xinxin Zhou, Xiangrong Kobashi, Kazuhide Sugihara, Kenichi Nagoya Bunri Univ Dept Info&MediaStudy Inazawa City Japan Gifu Univ Dept Intelligent Image Info Gifu Japan Gifu Keizai Univ Dept Info&MediaStudy Ogaki Japan

ISBN: (纸本)9781509022182

History is a compulsory but difficult subject for students in Japan. The conventional education methods based on descriptions in textbooks have not been effective enough for students to intuitively imagine historic scenes and understand what happened. An ideal environment for students that includes history films or interactive games is now expensive to construct. In this study, we propose an easy method of developing a computer system that integrates rich resources other than textbooks for history education using 3d visualization, augmented reality, and physical models made by 3d printing to enhance the motivation of the students. This paper describes the outline of the proposed system with details of packages that are used for system construction. The authors demonstrate the results of developing this system with many examples. These results show the effectiveness of changing the approach to history education in Japan for the first time.

关键词： Cultural Heritage 3dCG virtual Reality Augmented Reality History Learning

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NEW SYSTEMS FOR THE MANAGEMENT OF dATA. THE CASE STUdY OF THE CHAPTER HOUSE OF SANTA MARIA NOVELLA IN FLORENCE

NEW SYSTEMS FOR THE MANAGEMENT OF DATA. THE CASE STUDY OF TH...

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conference on 3d virtual reconstruction and visualization of complex architectures (3d-ARCH)

作者： Battini, C. Univ Genoa DICCA I-16126 Genoa Italy

ISBN: (纸本)9781629935201

The technological solutions, made available today, offer opportunities of great interest for the detection in the field of cultural heritage;instrumentation for the survey and advanced multimedia representations for objects of archaeological, artistic, architectural. Since we changed the type of information, not more interpretation consists of a single piece of data, but from a set of data, must be changed, consequently, also the systems for their management or better, if until now the only situation of interest was that of having to deal with the data representing only the text, data are now made up of sounds, images, video and three-dimensional models. For these reasons and others, we can discuss in continuation, systems and storage structures classics are still not sufficient to manage these new realities. An architectural structure is a set of three-dimensional components that define spatially a form and a project idea;so that the representation of the architecture may not avail itself simply means two-dimensional graphs to describe it and describe it in all its parts, but need, and it is now possible, systems that provide for the possibility to analyze from multiple points of view the forms that compose it. The communication media can play a very important role to get directions on the actions of restoration and enhancement of the cultural and environmental heritage. Help can be provided by information and its simulation systems of virtual reality with which, in addition to conveying information, you can view models to better describe the development that the well has had in history. This research starts from the need to develop new systems of representation and data management. Objective of the project is to increase and share knowledge of architecture and the environment. dynamic representations, relational databases, devices use data, are the main tools of this research. The study addressed led to the creation of a system that allows the transmission and ana

关键词： documentation Image Matching Laser Scanner Multiresolution virtual Reality Web Webgl

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A WEB-BASEd INTERACTIVE TOOL FOR MULTI-RESOLUTION 3d MOdELS OF A MAYA ARCHAEOLOGICAL SITE 4

A WEB-BASED INTERACTIVE TOOL FOR MULTI-RESOLUTION 3D MODELS ...

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

作者： Agugiaro, G. Remondino, F. Girardi, G. von Schwerin, J. Richards-Rissetto, H. de Amicis, R. Bruno Kessler Fdn FBK Opt Metrol Unit 3D Trento Italy Fdn Graphitech Trento Italy Univ New Mexico Dept Art & Art Hist Albuquerque NM 87131 USA Umea Univ HUMlab S-90187 Umea Sweden

Continuous technological advances in surveying, computing and digital-content delivery are strongly contributing to a change in the way Cultural Heritage is "perceived": new tools and methodologies for documentation, reconstruction and research are being created to assist not only scholars, but also to reach more potential users (e.g. students and tourists) willing to access more detailed information about art history and archaeology. 3d computer-simulated models, sometimes set in virtual landscapes, offer for example the chance to explore possible hypothetical reconstructions, while on-line GIS resources can help interactive analyses of relationships and change over space and time. While for some research purposes a traditional 2d approach may suffice, this is not the case for more complex analyses concerning spatial and temporal features of architecture, like for example the relationship of architecture and landscape, visibility studies etc. The project aims therefore at creating a tool, called "QueryArch3d" tool, which enables the web-based visualisation and queries of an interactive, multi-resolution 3d model in the framework of Cultural Heritage. More specifically, a complete Maya archaeological site, located in Copan (Honduras), has been chosen as case study to test and demonstrate the platform's capabilities. Much of the site has been surveyed and modelled at different levels of detail (Lod) and the geometric model has been semantically segmented and integrated with attribute data gathered from several external data sources. The paper describes the characteristics of the research work, along with its implementation issues and the initial results of the developed prototype. [GRAPHICS] .

关键词： 3d modelling Visualisation Cultural Heritage Maya Copan

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THE COMPARISON OF 2d ANd 3d dETECTORS FOR TLS dATA REGISTRATION - PRELIMINARY RESULTS 8

THE COMPARISON OF 2D AND 3D DETECTORS FOR TLS DATA REGISTRAT...

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

作者： Markiewicz, J. S. Markiewicz, L. Forys, P. Fac Geodesy & Cartog Dept Photogrammetry Remote Sensing & Spatial Info Warsaw Poland Warsaw Univ Technol Fac Mechatron Inst Micromech & Photon Virtual Real Tech Div Warsaw Poland

This paper presents the analysis of possible methods of a terrestrial laser scanning (TLS) data registration using 2d/3d detectors and descriptors. The developed approach, where point clouds are processed in form of panoramic images, orthoimages and 3d data, was described. The accuracy of the registration process was preliminary verified. The two approaches were analysed and compared: the 2d SIFT (Scale-Invariant Feature Transform) detector and descriptor with the rasterized TLS data and the 3d SIFT detector with the 3d FPFH (Fast Point Feature Histograms) descriptor. The feature points were found and preliminary matched using the OpenCV and PCL (Point Cloud Library) libraries. In order to find the best point cloud representation for the registration process, both the percentage and distribution of the correctly detected and matched points were analysed. The materials consisted of the point clouds of two chambers from the Museum of King John III's Palace in Wilanow. They were acquired using the Z+F 5006h and 5003 TLS scanners. The performed analysis showed that the lowest RMSE values were for the 2d detectors and orthoimages. However, in the case of the point number and distribution, better results were obtained for using the 3d detector.

关键词： cultural heritage TLS data registration feature-based method 2d and 3d detectors accuracy analysis

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HIGH QUALITY TEXTURE MAPPING PROCESS AIMEd AT THE OPTIMIZATION OF 3d STRUCTUREd LIGHT MOdELS 8

HIGH QUALITY TEXTURE MAPPING PROCESS AIMED AT THE OPTIMIZATI...

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

作者： Inzerillo, Laura di Paola, Francesco Alogna, Yuri Univ Palermo Dept Architecture DARCH Palermo Italy

This article presents the evaluation of a pipeline to develop a high-quality texture mapping implementation which makes it possible to carry out a semantic high-quality 3d textured model. due to geometric errors such as camera parameters or limited image resolution or varying environmental parameters, the calculation of a surface texture from 2d images could present several color errors. And, sometimes, it needs adjustments to the RGB or lightness information on a defined part of the texture. The texture mapping procedure is composed of mesh parameterization, mesh partitioning, mesh segmentation unwraps, UV map and projection of island, UV layout optimization, mesh packing and mesh baking. The study focuses attention to the mesh partitioning that essentially assigns a weight to each mesh, which reveals a mesh's weight calculated by considering the flatness and distance of the mesh with respect to a chart. The 3d texture mapping has been developed in Blender and implemented in Python. In this paper we present a flowchart that resumes the procedure which aims to achieve a high-quality mesh and texture 3d model starting from the 3d Spider acquire, integrated with the SfM texture and using the texture mapping to reduce the color errors according to a semantic interpretation.

关键词： Texture Mapping Structured Light Scanning Restoration 3d visualization Photogrammetry 3d modeling

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A GEOMETRICAL SIMILARITY PATTERN AS AN EXPERIMENTAL MOdEL FOR SHAPES IN ARCHITECTURAL HERITAGE: A CASE STUdY OF THE BASE OF THE PILLARS IN THE CATHEdRAL OF SEVILLE ANd THE CHURCH OF SANTIAGO IN JEREZ, SPAIN

A GEOMETRICAL SIMILARITY PATTERN AS AN EXPERIMENTAL MODEL FO...

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conference on 3d virtual reconstruction and visualization of complex architectures

作者： Moyano, J. J. Barrera, J. A. Nieto, J. E. Marin, d. Anton, d. Univ Seville Higher Tech Sch Bldg Engn Dept Graph Express & Bldg Engn 4A Reina Mercedes Ave Seville 41012 Spain Univ Seville Higher Tech Sch Bldg Engn Dept Graph Engn 4A Reina Mercedes Ave Seville 41012 Spain

This paper proposes a procedure for the search of a geometrical similarity pattern in architectural heritage by means of calculating probability indexes to support hypotheses initially endorsed by documentary sources. The buildings analysed are the Cathedral of Seville and the Church of Santiago, in Jerez, Spain. The 3d models of their selected pillars are obtained by means of Terrestrial Laser Scanning (TLS), Optical Scanning (OS) and photogrammetry through image-based modelling software (SFM-IBM). To this end, a procedure for the comparison of shapes is established. It is based on similarity statistics, the determination of homologous points and the agreement of characteristic sections. Here, two key aspects are considered: on the one hand, the metric standpoint;on the other hand, historical-graphical features of the 3d models: composition, techniques, styles, and historical-graphical documentary sources. Thus, putting aside the mere dimensional analysis, the sections are compared with graphical patterns and models of which the same authorship-stonemasons working in that age-is accurately known. As a result, the outcomes of this research reveal the geometrical similarity between the elements of the pillars of the Cathedral of Seville and the Church of Santiago.

关键词： Geometrical similarity pattern 3d range scanning Terrestrial laser scanning Structure-from-motion 3d data comparison Cathedral of Seville

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