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FACE-R-A 3d database of 400 Living Individuals' Full Head CT- and Face Scans and Preliminary GMM Analysis for Craniofacial Reconstruction

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JOURNAL OF FORENSIC SCIENCES 2013年第6期58卷 1420-1428页

作者： Kustar, Agnes Forro, Laszlo Kalina, Ildiko Fazekas, Ferenc Honti, Szabolcs Makra, Szabolcs Friess, Martin Hungarian Nat Hist Museum Dept Anthropol H-1083 Budapest Hungary Idealo Internet GmbH D-10119 Berlin Germany Semmelweis Univ Dept Diagnost Radiol & Oncotherapy H-1083 Budapest Hungary TONDO SP1 Kft H-1036 Miskolc Hungary Hermann Otto Museum H-3529 Miskolc Hungary Museum Natl Hist Nat CNRS Dept Hommes UMR7206 F-75231 Paris 05 France

In the past, improvements in craniofacial reconstructions (CFR) methodology languished due to the lack of adequate 3d databases that were sufficiently large and appropriate for 3-dimensional shape statistics. In our study, we created the FACE-R database from CT records and 3d surface scans of 400 clinical patients from Hungary, providing a significantly larger sample that was available before. The uniqueness of our database is linking of two data types that makes possible to investigate the bone and skin surface of the same individual, in upright position, thus eliminating many of the gravitational effects on the face during CT scanning. We performed a preliminary geometric morphometric (GMM) study using 3d data that produces a general idea of skull and face shape correlations. The vertical position of the tip of the (soft) nose for a skull and landmarks such as rhinion need to be taken into account. Likewise, the anterior nasal spine appears to exert some influence in this regard.

关键词： forensic science forensic craniofacial reconstruction 3d database computer tomography surface scanning soft- and hard tissue covariation geometric morphometrics

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A ToF 3d database for Hand Gesture Recognition

A ToF 3D Database for Hand Gesture Recognition

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10th International Symposium on Electronics and Telecommunications (ISETC)

作者： Simion, Georgiana Caleanu, Catalin-daniel POLITEHN Univ Timisoara Fac Elect & Telecommun Timisoara Romania

ISBN: (纸本)9781467311762

Although 3d information presents, in the context of hand gesture recognition (and not only), multiple advantages in comparison with the 2d counterpart, up-to-date there are very few 3d hand gesture databases. Recently, the Time-of-Flight (ToF) principle - employed in certain range imaging 3d cameras - became more and more attractive. According to it, the measurement distance is derived from the propagation time of the light pulse between the camera and the subject for each point of the image. In this paper, we describe the development of UPT ToF 3d Hand Gesture database (UPT-ToF3d-HGdB). It represents, according to the best of our knowledge, the single database of this type which is publicly available.

关键词： Hand gesture recognition Time-of-Flight 3d database

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Boundless Reconstruction Using Regularized 3d Fusion 13th

Boundless Reconstruction Using Regularized 3D Fusion

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13th International Joint Conference on e-Business and Telecommunications (ICETE)

作者： Rajput, M. A. A. Funk, E. Boerner, A. Hellwich, O. German Aerosp Ctr Inst Opt Sensor Syst Dept Informat Proc Opt Syst Berlin Germany Tech Univ Berlin Comp Vis & Remote Sensing Berlin Germany

ISBN: (纸本)9783319678764;9783319678757

3d reconstruction from image based depth sensor is essential part of many offline or online robotic applications. Numerous techniques have been developed to integrate multiple depth maps to create 3d model of environment, however accuracy of the reconstructed 3d model exclusively depends upon the precision of depth sensing. Economical depth sensors such as Kinect and stereo camera sensors provide imprecise depth data which affect the integration process and produce unwanted noisy surfaces in 3d model. There exist several approaches which use image filtering based depth map denoising, however applying filtering directly on depth data can result in inconsistent and deformed 3d model. In this paper we investigate and extend a recursive variant of total variation based filtering to incorporate multi-view based depth images while applying implicit depth smoothing. Proposed framework uses sparse voxel representation to aid large scale 3d model reconstruction and is shown to reduce absolute surface error of final reconstructed 3d model by up to 77% in comparison with state of the art 3d fusion techniques.

关键词： Large scale automated 3d modelling Mobile robotics Efficient data structures 3d database

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Recursive Total Variation Filtering Based 3d Fusion

Recursive Total Variation Filtering Based 3D Fusion

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13th International Joint Conference on e-Business and Telecommunications (ICETE)

ISBN: (纸本)9789897581960

3d reconstruction from mobile image sensors is crucial for many offline-inspection and online robotic application. While several techniques are known today to deliver high accuracy 3d models from images via offline-processing, 3d reconstruction in real-time remains a major goal still to achieve. This work focuses on incremental 3d modeling from error prone depth image data, since standard 3d fusion techniques are tailored on accurate depth data from active sensors such as the Kinect. Imprecise depth data is usually provided by stereo camera sensors or simultaneous localization and mapping (SLAM) techniques. This work proposes an incremental extension of the total variation (TV) filtering technique, which is shown to reduce the errors of the reconstructed 3d model by up to 77% compared to state of the art techniques.

关键词： Large Scale Automated 3d Modelling Mobile Robotics Efficient data Structures 3d database

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Methods and tools to enjoy and to study inaccessible HERITAGE

Methods and tools to enjoy and to study inaccessible HERITAG...

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ISPRS Technical Commission V Symposium 2014

作者： Capone, M. Campi, M. DIARC Dept. of Architecture University of Naples Federico II Napoli80134 Italy

ISBN: (纸本)9781629935201

Our research on a multi-purpose survey of cultural Heritage located in UNESCO Historical Centre of Naples has the following goals: to test some innovative strategies to improve public enjoyment for inaccessible sites;to explore the use of some interactive systems to study heritage in remote;to explore how to access the information system through AR applications. In this paper we are going to focus on comparison between interactive system to access 3d data and photogrammetric processing of panoramic images. We investigated on: a. the use of 360° panorama for 3d restitutions;b. the use of 360° panorama as an interface to 3d data to extract real 3d coordinates and accurately measure distances;c. the use of 3d PdF to access a 3d database.

关键词： 360° panoramas 3d database 3d modeling 3d PdF Cultural heritage Laser scanning

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design, implementation and applications of 3d web-services in dB4GEO 8

Design, implementation and applications of 3D web-services i...

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ISPRS 8th 3d GeoInfo Conference and WG II/2 Workshop

作者： Breunig, M. Kuper, P.V. dittrich, A. Wild, P. Butwilowski, E. Al-doori, M. Geodetic Institute Karlsruhe Institute of Technology Karlsruhe76131 Germany Institute of Photogrammetry and Remote Sensing Karlsruhe Institute of Technology Karlsruhe76131 Germany Institute of Environmental Systems Research University of Osnabrück Osnabrück49069 Germany School of Engineering American University in Dubai Dubai United Arab Emirates

The object-oriented database architecture dB4GeO was originally designed to support sub-surface applications in the geo-sciences. This is reflected in dB4GeO's geometric data model as well as in its import and export functions. Initially, these functions were designed for communication with 3d geological modeling and visualization tools such as GOCAd or MeshLab. However, it soon became clear that dB4GeO was suitable for a much wider range of applications. Therefore it is natural to move away from a standalone solution and to open the access to dB4GeO data by standardized OGC web-services. Though REST and OGC services seem incompatible at first sight, the implementation in dB4GeO shows that OGC-based implementation of web-services may use parts of the dB4GeO-REST implementation. Starting with initial solutions in the history of dB4GeO, this paper will introduce the design, adaptation (i.e. model transformation), and first steps in the implementation of OGC Web Feature (WFS) and Web Processing Services (WPS), as new interfaces to dB4GeO data and operations. Among its capabilities, dB4GeO can provide data in different data formats like GML, GOCAd, or dB3d XML through a WFS, as well as its ability to run operations like a 3d-to-2d service, or mesh-simplification (Progressive Meshes) through a WPS. We then demonstrate, an Android-based mobile 3d augmented reality viewer for dB4GeO that uses the Web Feature Service to visualize 3d geo-database query results. Finally, we explore future research work considering dB4GeO in the framework of the research group “Computer-Aided Collaborative Subway Track Planning in Multi-Scale 3d City and Building Models”. © 2013 Copernicus. All Rights Reserved.

关键词： 3d database 3d service database architecture database service Geo-database Spatial database

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Indexation and visualization of documents in a 3d model of the St Trophime cloister over the Internet

Indexation and visualization of documents in a 3D model of t...

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International Congress on digital Heritage

作者： Romain Raffin Aix-Marseille Universite Marseille Provence-Alpes-CÃ´te d'Azu FR

Historical buildings are more and more digitized, photographed or measured with precision to facilitate their conservation. A second widely addressed theme is the conservation of documents relative to an archeological site, together with the growth of functions in databases that can also cover the 3d space. We propose to join these two topics using 3d geometric objects to index a spatial database. St Trophime Cloister of Arles (France) has been a scientific playground for geometry processing and 3d visualization over the Internet. In order to propose to archaeologist and cultural heritage managers an interface that will offer access to all documents related to the Cloister we developed a 3d database indexation and its selection system. Gracefully to the standards evolution of the Internet, this is made possible in a simple web browser. The documents linked to a part of the building are then selected by a visual choice in 3d. According to the user position the geometry is dynamically loaded/unloaded, the details in the visualization engine are adapted to keep a high-performance system and a sufficient quality. The support of a well known communication protocol (HTTP) also enhances the access to the application and makes the platform accessible from the public or the scientists but introduces drawbacks in the capabilities of the application (geometry loadings, memory management, network latency).

关键词： Geometry processing WebGL 3d database virtual documentation

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3d reality-based artefact models for the management of archaeological sites using 3d Gis: a framework starting from the case study of the Pompeii Archaeological area

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JOURNAL OF ARCHAEOLOGICAL SCIENCE 2012年第5期39卷 1271-1287页

作者： Apollonio, Fabrizio I. Gaiani, Marco Benedetti, Benedetto Univ Bologna I-40136 Bologna Italy

This work describes the procedures, the different techniques and the pipeline used for creating a digital framework that should assist the Superintendence of Pompeii in the digital reconstruction, classification, management and visualisation of archaeological finds inside an advanced 3d web-based repository of reality-based data. Specific topics have been focused on the quality assessment procedures adopted to ensure consistency and reliability of data throughout the whole 3d models acquisition and pipeline creation, as well as on the particular semantic reality-based structure adopted to develop an information system into a knowledge one. The main purposes of our framework have been the usage of 3d digital models as a restitution of the real object and as a metaphor for navigating through the data;3d models were used as archaeological cognitive systems and developed as a collection of structured objects, identified through a precise terminology that allows to easily extend the concept of 2d GIS to 3d GIS. In addition, the system was developed as a scalable application that allows the use of the same database by different users, simply filtering the data according to the specific requirements, and can operate both as standalone and web-based application. (C) 2012 Elsevier Ltd. All rights reserved.

关键词： Archaeology Web-based information system 3d database Reality-based 3d modelling Semantics Shape grammar Visualization

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3d Revision Control Framework 12

3D Revision Control Framework

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17th International ACM Symposium on 3d Web Technology (Web3d)

作者： dobos, Jozef Steed, Anthony UCL London WC1E 6BT England

ISBN: (纸本)9781450314329

The maintenance of assets in a large 3d scene can involve many authors with potentially different skills and different modeling tools. The standard paradigm of collaborative editing is sharing of files between various instances of applications. This presents problems, not limited to maintaining consistency of the models and dealing with concurrent edits in the same part of a scene. In this paper, we present a novel framework for non-linear revision control and online distribution of 3d assets. This framework supports concurrent asynchronous 3d editing of models and tracking of multiple revisions so that they can be integrated at a later date. It thus provides similar functionality to file-based revision control systems, but is built around a NoSQL database, hence avoids the constraints of file based storage. The framework supports distributed editing over the Internet and additional lightweight clients in web-browsers with WebGL support.

关键词： 3d database version tracking revision history nosql webgl client java liveconnect

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Reconstruction of car crash scenes using a 3d Building and Query Algebra

Reconstruction of car crash scenes using a 3D Building and Q...

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8th International Conference on Signal Image Technology and Internet Based Systems (SITIS)

作者： Amato, Flora Moscato, Vincenzo Picariello, Antonio Sansone, Carlo Univ Naples Federico II Dipartimento Informat & Sistemist Naples Italy

ISBN: (纸本)9780769549118;9781467351522

In this paper, we define a novel 3d building and query algebra for reconstructing car crash scenes. In particular, a low-cost 3d tool based on such algebra is proposed in order to collect and manage the same data set that will be used in the investigation procedures. Once acquired the GPS coordinates of the involved vehicles and scenes details by means of appropriate measurement systems, our tool provides the 3d models of all the scene objects with a set of useful multimedia information and displays them on 3d maps. Preliminary results in the case of a motorway car crash scene are presented and discussed.

关键词： 3d Languages 3d Tools 3d database

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