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检索条件"任意字段=17th International Conference on 3D Web Technology, Web3D 2012"

共 62 条记录，以下是41-50 订阅

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Cave chamber data modeling and 3d web visualization

Cave chamber data modeling and 3D web visualization

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2013 17th international conference on Information Visualisation, IV 2013

作者： Silvestre, Ivo Rodrigues, José I. Figueiredo, Mauro J. G. Veiga-Pires, Cristina Centro de Investigação Marinha e Ambiental Faro Portugal Instituto Superior de Engenharia Universidade Do Algarve Faro Portugal Faculdade de Ciências e Tecnologia Universidade Do Algarve Faro Portugal

ISBN: (纸本)9780769550497

Underground caves and its specific structures are important for geomorphological studies. In this paper we present tools to identify and map speleothems by surveying cave chambers interiors. the cave chamber was surveyed using Terrestrial Laser Scanning to acquire point clouds with high level of detail for 3d model generation. this data with 45 million points is useful for either reconstruction, geomorphological studies or virtual visits of caves. With this point cloud we generated a 3d-mesh to represent the surface model of the cave chamber, which is important to study its geomorphological features. A topological structure of the 3d-mesh was also implemented to get an efficient algorithm to help identifying stalactites. the possibility to publish 3d data on the web is of particular interest for the geospatial field. For this reason, it was decided to make the cave model available in the web by developing a 3d graphical interface where users can navigate and interact with the three-dimensional models of the cave. For this web3d framework it was used X3d, webGL and X3dOM. Such solution does not require any additional plug-ins or components. © 2013 IEEE.

关键词： Caves

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Robust transmission of 3d geometry over lossy networks 03

Robust transmission of 3D geometry over lossy networks

引用

Proceedings web3d 2002 Symposium: 7th international conference on 3d web technology

作者： Chen, Zhihua Bodenheimer, Bobby Barnes, J. Fritz Dept. of Elec. Eng. and Comp. Sci. Vanderbilt University Nashville TN 37235 United States

ISBN: (纸本)9781581136449

this paper describes a robust mechanism for transmitting 3d meshes over the Internet. TCP/IP is an excellent means for reliable transport over the Internet. However, multi-user, real-time graphics applications may find TCP transmission disadvantageous when reception of a mesh is time-critical. To improve speed one could use an unreliable transmission protocol. Yet typical mesh compression schemes increase the fragility of the mesh to lossy transmission. In this paper, we develop a hybrid method of transmitting meshes over the Internet, built upon progressive mesh [17] technology. the hybrid method transmits important visual detail in a lossless manner, but trades off loss of visually less important detail for transmission speed. Tests of the method in a lossy network environment show that the method improves the transmission time of the mesh with little degradation in quality.

关键词： data communication systems

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web3d Online Virtual Education Platform for Touring Huangyangjie Battlefield Scenario Over Internet 10th

Web3D Online Virtual Education Platform for Touring Huangyan...

引用

10th international conference on E-Learning and Games (Edutainment)

作者： Liu, Chang Jia, Jinyuan Ge, Yibo Xie, Ning Tongji Univ Sch Software Engn Shanghai 201804 Peoples R China

ISBN: (纸本)9783319402598;9783319402581

this paper explores how the reconstruction of special history scenario will be applied in online education. After investigating various virtual reality techniques including design of virtual educational system, reconstruction of virtual scene, management of scene, AI, lightweighting for 3d model and light shadow rendering, we build an online education platform for touring a web3d virtual battlefield scenario called Huangyangjie in China. We firstly present the solution and scheme for rebuilding the web 3d battlefield Scenario using lightweight 3d models. Secondly, we present voxel of interesting (VOI) scene management strategy based terrain-voxel-model uniform structure. Finally, we optimize A* algorithm in AI management process and present Parallel-Split Variance Shadow Mapping (PSVSM) algorithm based on sparse voxelization in real-time web-based rendering.

关键词： Virtual reality Virtual education Scene management Light weight 3d model Shadow mapping

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Application research of web3d technology in three-dimensional show of oil well pitshaft information

Application research of Web3D technology in three-dimensiona...

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2012 9th international conference on Fuzzy Systems and Knowledge discovery, FSKd 2012

作者： Xie, Hongtao Computer and Information Technology Institute Northeast Petroleum University Daqing China

ISBN: (纸本)9781467300223

Oil well pitshaft information is important information of maintaining oil production and executing measure of tapping the potential, According to the actual situation of oil well pitshaft information show, three-dimensional visualization technology base on web is adopted, the integrated use of 3d modeling technology and three-dimensional model web publishing technology realized the network application of oil well pitshaft information show and using database technology realized the demonstration of three-dimensional model and querying of database information via database technology and for production managers check device information and well completion status and production measures quickly and made scientific and rational decision timely and provided a network platform which is quick and visual and tangible and it is very important for the prevention of mine accidents and long-term exploitation of oil. © 2012 IEEE.

关键词： three dimensional computer graphics

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Integration of Grid and OGC Compliant Servcies to Implement the Sharing and Interoperability of Multi-Source and Heterogeneous Geospatial data

Integration of Grid and OGC Compliant Servcies to Implement ...

引用

17th international conference on Geoinformatics

作者： Fan, Hong Feng, Hao Zhu, Xinyan Wuhan Univ State Key Lab Informat Engn Surveying Mapping & R Wuhan 430079 Peoples R China

ISBN: (纸本)9781424445622

this paper integrates grid technology and OGC compliant services to design and implemented a geospatial web service platform for the western region's surveying and mapping project. It can make use of OGC common services and interoperability interfaces to supply efficient and secure data management, publishing and inquiries in the heterogeneous computer environment and as well as multi-scale seamless display in 3d GeoGlobe. As an integration of grid technology and the OGC web Services, this platform has many advantages that traditional platform can't provide, including open, standardization, security and the ability to integrate heterogeneous services and support for heterogeneous data types, and having a good query and visualization effectiveness as well.

关键词： Grid 4d products web Feature Services(WFS) web Map Services(WMS) web Coverage services(WCS) Catalogue Service for web (CSW) Service Integration

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Open device control (OpendC): Human interface device framework for interactive applications including educational contents in ubiquitous environments

Open device control (OpenDC): Human interface device framewo...

引用

2012 17th IEEE international conference on Wireless, Mobile and Ubiquitous technology in Education, WMUTE 2012

作者： Kaneko, Kosuke Nakamura, Tomoyuki Okada, Yoshihiro Matsuguma, Hiroyuki Graduate School of Information Science and Electrical Engineering Kyushu University Fukuoka Japan Graduate School of Design Kyushu University Fukuoka Japan

ISBN: (纸本)9780769546629

this paper proposes a human interface device framework for interactive applications including educational contents in ubiquitous environments. Recently, mobile and portable devices such as iPad, iPhone and Android tablet PC have become common and popular. We should use these devices for providing learners with more attractive educational contents supporting various intuitive interfaces. Using the proposed framework, it becomes possible to easily develop such educational contents. Furthermore, the combined use of the framework with webIB, which is a software development system for web 3d contents, it also becomes possible to develop more attractive educational contents using 3d graphics that run on web and digital TV. To clarify the usefulness of the framework, this paper introduces interactive application examples including 3d educational contents available on web and digital TV actually developed using the proposed framework and webIB. © 2012 IEEE.

关键词： web services

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A Configurable Visual Steering Architecture based on 3d Scene Composition

A Configurable Visual Steering Architecture based on 3D Scen...

引用

IEEE 17th international conference on Computer Supported Cooperative Work in design (CSCWd)

作者： Wang, Han Cai, Hongming Jiang, Lihong Shanghai Jiao Tong Univ Sch Software Shanghai 200030 Peoples R China

ISBN: (纸本)9781467360852;9781467360845

Online visual steering technology provides users a 3d cooperative working environment in the complex or multi-steps task. due to the difference of role or authority, new demands have risen such as multi-view presentations and conflict solving mechanism for users in the process of cooperative work. thus, a configurable architecture based on scene composition is proposed for visual steering. It mainly contains several points: (1) Configurable scene structure including geometry data, concept model, user profile, enabling scene composition to build multi-view for different uses in working environment. (2) Browser-based 3d scene rendering page using X3dom. (3) Loose coupling model sources on web services. A demo is also provided to test our architecture and verified its usability. By comparing with other implement methods, this architecture provides more flexible customizability and expandability, together with lightweight web-based clients.

关键词： visual steering scene composition multi-user multi-view configurable architecture cooperative work X3d

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HTML5 and webSockets;challenges in network 3d collaboration 13

HTML5 and WebSockets;challenges in network 3D collaboration

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17th Panhellenic conference on Informatics, PCI 2013

作者： Kapetanakis, Kostas Panagiotakis, Spyros Malamos, Athanasios G. Department of Applied Informatics and Multimedia Technological Educational Institute of Crete Heraklion Crete GR 71004 Greece Department of Sciences Division of Computer Science Technological Educational Institute of Crete Heraklion Crete GR 71004 Greece

ISBN: (纸本)9781450319690

the emergence of HTML5 and other associated web technologies have turned browser applications to cross-platform and device independent ones. In particular HTML5, webSockets and X3dom can shape a diversity of future applications, where the client-server operations will be obsolete. the X3dom technology combines JavaScript, HTML5 and X3d to provide 3d graphics visualization and interaction in a web-browser without a plug-in. Enriched with a webSockets implementation for maintaining a persistent and bidirectional TCP connection with a server, a web application can communicate, stream and transfer events or other data to its clients creating a full collaborative 3d environment. In this paper, we introduce an architecture for interactive 3d scenes streaming over the web. We also demonstrate a collaborative 3d web-application for preschool children's education that capitalizes on the above technologies. Small classes, real or virtual, can be arranged around an instructor who can control the main 3d scenery. the application can provide a positive and encouraging environment for toddlers to interact with computers while recognizing and playing with 3d animated models of popular animals. Copyright © 2013 ACM.

关键词： Virtual reality

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3d virtual-reality object of Noh-mask for mobile devices 17

3D virtual-reality object of Noh-mask for mobile devices

引用

17th international conference on distributed Multimedia Systems, dMS 2011

作者： Pham, Billy Kobayashi, Hisato Yana, Kazuo Ban, Momori Hino, Yoshiyuki Hosei Univesity Research Institute California 800 Airport Blvd. Suite 504 BurlingameCA94010 United States Hosei Univesity IT Research Center Tokyo102-8160 Japan

ISBN: (纸本)1891706306

Recently 3d technology has been applied to various fields, including higher education. Many universities have created 3d virtual environments to provide effective interactive teaching materials and allow students to interact virtually in real time. At the same time, mobile devices have rapidly improved, giving users convenient yet powerful media for communication. this paper describes a method for creating Noh-masks, which are used for traditional Japanese performances, as 3-d virtual objects viewable either on a standard web browser or mobile devices such as iPad or Android terminals. these virtual Noh-masks have significant cultural values. the techniques described below are useful for creating 3d virtual replicas of similar valuable assets that can be placed in virtual museums. © 2011 by Knowledge Systems Institute Graduate School.

关键词： Virtual reality

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Visualizing, Analyzing and Constructing L-System from Arborized 3d Model Using a web Application

Visualizing, Analyzing and Constructing L-System from Arbori...

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17th international Joint conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2024

作者： Nielen, Nick van Verbeek, Fons Cao, Lu Leiden Institute of Advanced Computer Science Leiden University Leiden Netherlands

In biology, arborized structures are well represented and typically complex for visualization and analysis. In order to have a profound understanding of the topology of arborized 3d biological model, higher level abstraction is needed. We aim at constructing an abstraction of arborized 3d biological model to an L-system that provides a generalized formalization in a grammar to represent complex structures. the focus of this paper is to combine 3d visualization, analysis and L-system abstraction into a single web application. We designed a front-end user interface and a back-end. In the front-end, we used A-Frame and defined algorithms to generate and visualize L-systems. In the back-end, we utilized the Vascular Modelling Toolkit’s (VMTK) centerline analysis methods to extract important features from the arborized 3d models, which can be applied to L-system generation. In addition, two 3d biological models: lactiferous duct and artery are used as two case studies to verify the functionality of this web application. In conclusion, our web application is able to visualize, analyse and create L-system abstractions of arborized 3d models. this in turn provides workflow-improving benefits, easy accessibility and extensibility. © 2024 by SCITEPRESS–Science and technology Publications, Lda.

关键词： Abstracting

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