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A Reusable 3d Visualization Component for the Semantic web 07

A Reusable 3D Visualization Component for the Semantic Web

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12th international conference on 3d web technology

作者： Bosca, Alessio Bonino, dario Comerio, Marco Grega, Simone Corno, Fulvio Politecn Torino Turin Italy

ISBN: (纸本)9781595936523

Ontology visualization and exploration is not a trivial task as many issues can affect the effectiveness of interactions. As ontologies are, in the general case, quite connected graphs where concepts are the nodes and semantic relationships the edges, the problems include space allocation, edge superposition, scene over-crowding, etc. In this paper we propose a solution for the visualization and the exploration of ontologies using a 3-dimensional space, where information is represented on a 3d view-port enriched by visual cues. Our visualization tool aims at tackling representation issues of ontology models (as space allocation or the completeness and read-ability of displayed information) by adopting different views, at different granularities, in order to grant a constant navigability of the rendered model. Each provided view represents semantic information according to a different, task-based visualization paradigm, at a suitable level of detail. Besides being primarily implemented as a Protege plug-in, the proposed solution (named OntoSphere3d) is designed to be a reusable visualization component within Semantic web applications;in fact, every scene can be exploited as a standalone facility that provides access to ontological data through an intuitive and appealing. 3d interface. A case-study, is presented, where re-usability is demonstrated by integrating the OntoSphere3d visualization inside an Eclipse-based tool for web Service design (called web Services design Tool) developed by some of the authors in the context of another research project

关键词： 3d graphics Semantic web Ontology Exploration Visualization

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Using web3d Technologies for Visualization and Search of Signs in an international Sign Language dictionary 07

Using Web3D Technologies for Visualization and Search of Sig...

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12th international conference on 3d web technology

作者： Buttussi, Fabio Chittaro, Luca Coppo, Marco Univ Udine Dept Math & Comp Sci I-33100 Udine Italy

ISBN: (纸本)9781595936523

Sign languages are visual languages used by deaf people to communicate. As with sopken languages, sign languages vary among countries and have their own vocabulary and grammar. therefore, the different deaf communities need a dictionary that associates signs to the words of the spoken language of their country as well as dictionaries which translate signs from a sign language to another. Several researchers proposed multimedia dictionaries for sign languages of specific countries, but there are only a few proposals of multilanguage dictionaries. Moreover, current multimedia dictionaries suffer from serious limitations. Most of them allow only for a word-to-sign search, while only a few of them exploit sign parameters (i.e., handshape, orientation, location, and movement) to allow for a sign-to-word search. Current solutions also commonly us pictures or videos to represent signs and their parameters, but 2d images are often misleading for a correct identification (e.g., recognizing an handshape can be very difficult due to occlusions). this paper aims at facing the above described issues, exploiting web3d technologies such as X3d and H-Anim humanoids to better understand signs and to simplify sign-to-word and sign-to-sign search, by proposing an online international sign language dictionary, called 3dictSL. the paper presents the client-server architecture of 3dictSL and authoring tools which allow deaf communities to extend the dictionary with their own language. As a practical case study, the paper discusses the implementation of Italian Sign Language (LIS).

关键词： sign languages online dictionaries X3d H-Anim virtual humans visualization search

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TimeClock - Flexible Animation Control in X3d 07

TimeClock - Flexible Animation Control in X3D

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12th international conference on 3d web technology

作者： Belloc, Olavo Cabral, Marcio Zuffo, Marcelo Univ Sao Paulo Integrated Syst Lab BR-05508 Sao Paulo Brazil

ISBN: (纸本)9781595936523

In this paper we propose an alternative approach to create animations in X3d. this approach allows extended flexibility to control animations during run-time. Among the extended features, it is possible to : control the speed of the animation: play the animation backwards: repeat any specific time interval of the animation and access any key-frame instantly. In order to illustrate this we propose a new node called TimeClock node. this node implements the same functionalities of a TimeSensor node but with the ability to independently set the time frame, overcoming current X3d limitations in the time model specification for creating animation with interpolators. We think this approach is useful for both animators developers and users: animators can carefully analyze on the fly their work, users can easily control an animation using a dVd like interface and developers do not need to worry about creating several different interpolators for the same animation. We present our current results along with some examples of usage.

关键词： X3d animation control key-frame animation interaction

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An experience using X3d for Virtual Cultural Heritage 07

An experience using X3D for Virtual Cultural Heritage

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12th international conference on 3d web technology

作者： Cabral, Marcio Zuffo, Marcelo Ghirotti, Silvia Belloc, Olavo Nomura, Leonardo Nagamura, Mario Andrade, Fernanda Faria, Regis Ferraz, Leandro Univ Sao Paulo Integrated Syst Lab BR-05508 Sao Paulo Brazil

ISBN: (纸本)9781595936523

In this paper we present our experience in using Virtual Reality Technologies to accurately reconstruct and further explore ancient and historic city buildings. Virtual reality techniques provide a powerful set of tools to explore and access the history of a city. In order to explore, visualize and hear such history, we divided the process in three phases;historical data gathering and analysis;3d reconstruction and modeling;interactive immersive, visualization, auralizaton and display. the set of guidelines devised helped to put into practice the extensible tools available in VR but not always easy to put together by inexperienced users. these guidelines also helped the smoothness of our work and helped avoiding problems in the subsequent phases. Most importantly, the X3d standard provided an environment capable of helping the design and validation process as well as the visualization phase. To finalize, we present the results achieved and further analyze the extensibility of the framework. Although VR tools and technologies are widely available at present, there is still a gap between using the tools and really taking advantage of VR in historic architectural reconstruction so that users might immerse themselves into this world and thus be able to consider various scenarios and possibilities that might lead to new insightful inspiration. this is an ongoing process that we think will increase and help current architectural development.

关键词： X3d Virtual Reality Cultural Heritage Interaction

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Protein CorreLogo: an X3d representation of co-evolving pairs, tertiary structure, ligand binding pockets and protein-protein interactions in protein families 07

Protein CorreLogo: an X3D representation of co-evolving pair...

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12th international conference on 3d web technology

作者： Willis, Scooter Univ Florida Dept Comp Informat Sci & Engn Gainesville FL 32611 USA

ISBN: (纸本)9781595936523

To understand the functional elements of a protein structure biologists use domain specific 3d viewers (PdB) that are written to process the coordinates of atoms that represents the solved protein structure using X-Ray crystallography or NMR. the PdB viewers have been written to capture specific or common features of interest to the researcher. With the explosion of protein sequence data comparative studies and satatistical analysis of data can indicate regions of interest in 3d models. the ability to integrate statistical data into existing PdB viewers is difficult because the software is typically written to accomplish very specific functional goals and does not support exporting to a standard 3d format. In this paper, the PdB data is shown as X3d PdB ribbon models that are augmented with statistically significant data and compared to an Information-Rich Virtual Environment represented as a Protein CorreLogo X3d model. A protein family (Pfam) represents multiple alignments of protein sequences where protein domains and the tertiary structures have evolutionary conserved regions representing protein function. Various information properties of the protein family, the tertiary structure from a sequence's PdB structure and ligand binding pockets are combined to create a 3d Protein CorreLogo model. the multiple sequence alignment from the protein family is used to detect co-evolving amino acid pairs using mutual information. Co-evolving pairs are indicated as a column with color coding to represent the physio-chemical properties of each co-evolving amino acid combination. Additional visualizations along each axis include the 2d sequence logo, the degree of insert regions in the protein family and the surface accessibility of each amino acid for the referenced PdB sequence. the Protein CorreLogo model is based on X3d (VRML) facilitating immersive viewing of complex data relationships and detected co-evolving pairs. Two protein families are presented in the results secti

关键词： X3d mutual information Protein CorreLogo

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Composing Behaviors and Swapping Bodies with Motion Capture data in X3d 07

Composing Behaviors and Swapping Bodies with Motion Capture ...

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12th international conference on 3d web technology

作者： Weekley, Jeffrey d. Blais, Curtis L. Brutzman, don USN Postgrad Sch MOVES Inst Monterey CA 93943 USA

ISBN: (纸本)9781595936523

this paper describes current work in the evolution of open standards for 3d graphics for Humanoid Animation (H-Anim). It builds on previous work to encompass plausible humanoids, humanoid behaviors and methodologies for composition with interchangeable and blended behaviors. We present an overview of the standardization activities for H-Anim, including a proposed extension for the H-Anim Specification which allows for interchangeable actors and dynamic behaviors. We demonstrate a standards-based approach to the complex work flow and data extraction for 3d optical motion tracking systems. We describe how to archive, annotate and transform the whole body and segmented performance so that they can be used more widely and with less effort. the approach is compressible, streamable, sealeable, repeatable and suitable for large-scale training and analysis, entertainment and games. Often, X3d and VRML simulations lack the realistic representation of humans. they lack the direct flexibility of control required to build small, but meaningful, task-oriented training scenarios like deploying force protection assets in a busy commercial port. While high-value assets, defensive and offensive agents can be easily and realistically modeled using discreet event simulations, that realism is diminished by the lack of humanoid representations. the visualization is not as engaging and the training not as immersive. Including a rich set of characters with composable and swappable behaviors demonstrating intent of the agent entity heightens both the sense of realism and immersion. deriving these behaviors is difficult and translating the data into custom applications is craftwork. We propose a standard, archival data format so that captured behaviors can be repurposed and reused, following the SAVAGE approach. this data format will include behavior information and skeletal information such that they can be retargeted and repurposed with a minimum of effort.

关键词： Humanoid Animation (H-Anim) motion capture data transformation blended behaviors and composable bodies prototypes general pipeline description for motion capture to H-Anim data conversion XML data archive for motion capture-derived behaviors

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Construction of a dynamic environmental knowledge web for a sustainable environmental design

Construction of a dynamic environmental knowledge web for a ...

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12th international conference on Computer-Aided Architectural design Research in Asia

作者： Kaga, Atsuko Joohyung, Hahm Fukuda, Tomohiro Osaka Univ Grad Sch Engn Suita Osaka Japan

this research considered position information and described the construction of an environmental knowledge website of the dynamic user participation type that can collect and send information, and that allows discussion about ecology, the environment, and sustainability. By perusing the distribution of the knowledge using position information on a 2d map and a 3d virtual space, an environmental knowledge website which can grasp spatial distribution was built.

关键词： Sustainable development

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An approach for integrating real and virtual production automation devices applying the service-oriented architecture paradigm

An approach for integrating real and virtual production auto...

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12th IEEE international conference on Emerging Technologies and Factory Automation

作者： Cachapa, daniel Colombo, Armando Feike, Martin Bepperling, Axel Schneider Elect D-63500 Seligenstadt Germany

ISBN: (纸本)9781424408269

Based on the integration of the Service-oriented Architecture (SoA) paradigm and existing 2d/3d based engineering systems, a new approach and corresponding tools for the design, development and application of modular virtual web based production automation devices is presented in this paper. As a part of a 3d Product Lifecycle Management (PLM) solution, delima Automation was used to model the SoA environment, which brought the engineering of SoA to a complete workflow from the design of a product throughout the engineering of the production system. First developments have been applied to three pilot applications: a single virtual device, a mixed environment with one virtual and one real device, and finally an example of multiple virtual devices and instantiation on reusable components, thus showing that the initial requirements for the use of flexible reconfigurable devices in production are completely supported by the proposed approach.

关键词： Automation

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Topology of urban environment:Graph construction from multi-building floor plan data

Topology of urban environment:Graph construction from multi-...

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12th Computer-Aided Architectural design Futures conference, CAAdFutures 2007

作者： Whiting, Emily Battat, Jonathan Teller, Seth Massachusetts Institute of Technology United States

ISBN: (纸本)9781402065279

this paper introduces a practical approach to constructing a hybrid 3d metrical-topological model of a university campus or other extended urban region from labeled 2d floor plan geometry. An exhaustive classification of adjacency types is provided for a typical infrastructure, including roads, walkways, green-space, and detailed indoor spaces. We extend traditional lineal techniques to 2d open spaces, incorporating changes in elevation. We demonstrate our technique on a dataset of approximately 160 buildings, 800 floors, and 44,000 spaces spanning indoor and outdoor areas. Finally, we describe MITquest, a web application that generates efficient walking routes. © 2007 Springer.

关键词： Floors

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A three dimensional box counting method for measuring fractal dimensions of 3d models

A three dimensional box counting method for measuring fracta...

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11th IASTEd international conference on Internet and Multimedia Systems and Applications, IMSA 2007

作者： Suzuki, Motofumi T. National Institute of Multimedia Education 2-12 Wakaba Mihama-ku Chiba-shi 2610014 Japan

ISBN: (纸本)9780889866782

A large number of 3d model are used for various computer graphic related fields reflecting recent advancements in computer hardware. Since the number of 3d models is increasing rapidly as databases, various retrieval techniques have been proposed for handing 3d model data efficiently. In our retrieval technique, complexity and self-similarity of 3d models were evaluated, whereas typical retrieval techniques evaluate outer shape similarities of the 3d models. In the experiments, a database of 3d tree models was analyzed. Both a box counting method and the Hurst analysis method were applied to each 3d tree model for estimating fractal dimensions. the computed fractal dimension values were used for measuring complexities and self-similarities of each 3d model. An experimental web-based system was implemented for retrieving 3d tree models from the database. the system successfully estimated fractal dimensions (shape features) of each 3d tree model, and the 3d models were sorted and classified based on the complexities of the shapes.

关键词： Fractal dimension

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