G. Bell, A. Parisi, and M.Pesce. VRML, The Virtual Reality Modeling Language. International Standard ISO/IEC 14772-1:1997, http://www.vrml.org/Specifications.  Home/Search   Document Not in Database   Summary   Related Articles   Check

....control among users. A client application consists of a client module which enables communication to a VS server and a VRML viewer [10] which enables a user to navigate in a virtual world. The event exchange between ATLAS client and a viewer is performed via External Authoring Interface (EAI) [3] and additional interfaces which RTV viewer [10] provides. 3.3 Session Management A session implies an independent virtual shopping mall in which users can navigate, interact with each other, and purchase products. To satisfy various requirements of users, we support multiple sessions. A session ....

....a graphic standard language, to build a 3D shopping mall scene without any extensions. A VRML viewer, which is also compatible with X3D [14] is written in C and built as an ActiveX control to transparently work with Internet Explorer. To mediate events, we use External Authoring Interface (EAI) [3] and additioanl interfaces which the viewer provides. 4.2 ATLAS ATLAS is a scalable network framework for networked virtual environments. It is an ongoing project to support scalability in NVEs in terms of four scalability issues: communication architecture, interest management, concurrency ....

R. Carey, G. Bell, and C. Marrin, ISO/IEC 14772-2:2001, The Virtual Reality Modeling Language (VRML) - Part 2: External authoring interface (EAI), see at http://www.web3d.org/fs_specifications.htm

....mediated tools (e.g. videoconference) the Spin3D CVE provides new potentialities such as 3D object real time manipulation, zoom view on an object, common space and shared points of view, focused activity on the task to achieve. Spin3D is build around an extensible 3D browser. VRML97 [3] is the description language that we use to define 3D objects. This choice is due to the fact that VRML97 is now a widely used standard on Internet, which enables to define interactions and animations directly inside the description of objects. A 3D designer can then declare the active part of ....

Carey R., Bell G., Marrin C. : ISO/IEC 147721: 1997 Virtual Reality Modeling Language (VRML97). http://www.vrml.org/

....in a textured environment with the ability to physically manipulate a pre specified range of objects in a constrained manner. The user is often all but an observer in a world of very limited possibility. Although many systems now provide for some degree of behaviour using mechanisms such as VRML [BPM] Tcl [Ous94] or Java [HC97] applets this is not a complete solution to the problem, since it effectively shifts the issue of managing dynamics out from the VR system and leaves it to the application programmer. While of course the flexibility that such a mechanism gives is good, the work it ....

G. Bell, A. Parisi, and M.Pesce. VRML, The Virtual Reality Modeling Language. International Standard ISO/IEC 14772-1:1997, http://www.vrml.org/Specifications.

....between such two polygons is classified as unconnected. This method is very similar to the way hard and soft edges are found in e.g. VRML. Here a variable called crease angle is used to specify whether the normals on an edge should be interpolated between the two polygons that this edge connects [VRML95]. It is noted that the angle between two polygons is the angle between their normals. The method for assigning a photon map to a polygon can be described using the following pseudo code: 3. THE ALGORITHM In order to calculate a good approximation for the irradiance a large number of photons are ....

Gavin Bell, Anthony Parisi and Mark Pesce, The Virtual Reality Modeling Language, 1995 http://www.vrml.org/VRML1.0/vrml10c.html

.... model 1: validity of the model (from image K p to image K p 1 ) R,t: 3D transformations for moving camera from initial view (image K p ) to last view (image K p 1 ) f 1 ,f 2 : focal of camera for initial and last views, description of the 3D model (quite similar to VRML format [BEL 96] model 2: One must notice that each model is described in its own reference since the 3D models have no implicit consistency between themselves. 4. Video sequence decoding The decoder of a coded sequence is quite similar to a VRML viewer, except that we need streamed 3D models. ....

BELL G., PARISI A., PESCE M., "The Virtual Reality Modeling Language", vol. Version 1.0 Specification, 96.

....for collaborative activities purposes. This leads to Collaborative Virtual Environments (CVEs) CVEs are powerful tools for a wide range of applications: for instance audio video conference, co design meeting or distance learning (e learning) The Virtual Reality Modeling Language version 2. 0 [3] (called also VRML97) established a standard for the description of interactive 3D scenes in the World Wide Web. This language becomes one of the key components of many Virtual Environments since it allows users to create 3D interactive contents without particular programming skills. Indeed, many ....

R. Carey, G. Bell, and C. Marrin. ISO/IEC 14772-1:1997 Virtual Reality Modeling Language (VRML97). See at http://www.vrml.org/Specifications/VRML97/.

....virtual environment is synthesized as a collection of 3D geometrical entities. These geometrical entities are rendered in real time, often with the help of special purpose 3D rendering engines, to provide an interactive walkthrough experience. Recently, the Virtual Reality Modeling Language (VRML) [1] became a standard file format for the delivery of 3D models over the Internet. Subsequently, many efforts have been made to effectively compress and progressively transmit the VRML files over the Internet [4, 7, 9, 13] The 3D modeling and rendering approach has several main problems. First, it ....

R. Carey, G. Bell, and C. Marrin, The Virtual Reality Modeling Language. Apr. 1997, ISO/IEC DIS 14772-1.

....S the variance is 1 18 n (n Gamma 1) 2n 5) B.13) For the Spearman s ae: B.14) which for the sum of squared ordinal distances is: B. 15) The test with Spearman s ae is also called the Hotelling Pabst test [8] Appendix C VRML Virtual Reality Modeling Language [7], abbreviated VRML, is a 3D data description format, but is meant to be extended into a virtual reality language that also can contain for example sound. It looks as if the language is going to be the standard language for defining 3D objects, which makes it interesting in connection with ....

Gavin Bell, Anthoy Parisi, and Mark Pesce. The Virtual Reality Modeling Language. Specification, Internet, 1995. http://www.sdsc.edu.

.... 1: validity range for the model (from image ) to image 8 ) 3D transformations for moving camera from initial view (image ) to last view (image 2 ) camera focal length for initial and last views, description of the 3D model (quite similar to VRML format [9]) model 2 . One must notice that each model is described in its own reference system since the 3D models have no implicit consistency between themselves. 4. VIDEO SEQUENCE DECODING The decoder of a coded sequence is quite similar to a VRML viewer, except that we consider streamed 3D ....

A. Parisi G. Bell and M. Pesce, "The virtual reality modeling language," vol. Version 1.0 Specification, Jan.

....from sophisticated and expensive texture computation. The criterion for evaluating the quality of the reconstructed model is based on visual appreciation and does not require precise 3D reconstruction. The presented algorithm takes 2 images as input, and outputs a final model in VRML format [1] for display facilities. The algorithm steps are the following. First the fundamental matrix (denoted F ) associated with the epipolar geometry is computed in order to constrain a dense disparity field estimation [5] This dense matching between the 2 images is based on an algorithm derived from ....

A. Parisi G. Bell and M. Pesce. The virtual reality modeling language. Version 1.0 Specification, January 96.

....add up all the values for the mesh. The algorithm is simple and efficient, with many potential applications. 1. INTRODUCTION 3D scene object browsing is becoming more and more popular as it engages people with much richer experience than 2D images. The Virtual Reality Modeling Language (VRML) [1], which uses mesh models to represent the 3D content, is rapidly becoming the standard file format for the delivery of 3D contents across the Internet. Traditionally, in order to fit graphics rendering hardware well, a VRML file models the surface of a virtual object or environment with a ....

R. Carey, G. Bell, and C. Marrin, "The Virtual Reality Modeling Language". Apr. 1997, ISO/IEC DIS 14772-1.[Online]: http://www.web3d.org/Specifications/.

....from the MPEG 7 3D shape core experiments [15] the RcCad company [16] the VRML object supermarket in UK [17] and the Rother Daten Service in Germany [18] The total number of models in our database is around 1750. All the 3D models are in the Virtual Reality Modeling Language (VRML) format [19], which uses meshes to represent the 3D models. We use VRML because it is rapidly becoming the standard file format for the delivery of 3D contents across the Internet. Retrieving 3D models from a database has been studied by many groups [20] 21] 22] 23] 24] As with many other content based ....

R. Carey, G. Bell, and C. Marrin, "The Virtual Reality Modeling Language". Apr. 1997, ISO/IEC DIS 14772-1. [Online]: http://www.web3d.org/Specifications/.

....and minimize the code size at the same time, we decided to re write the kernel. Besides the 3D graphics library as a tool for programmers, we also need a 3D model and scene browser. Hence, we also developed a VRML browser applet by using jGL, since people would like to use the VRML file format [4] to display or play a 3D model or scene on the Internet. Furthermore, since we use jGL for the 3D graphics rendering, the VRML browser applet is also a good example for proving the capability of jGL. Before the end of 2000, the jGL project has been known as JavaGL, since Java and all Java based ....

Rikk Carey, Gavin Bell, and Chris Marrin. ISO/IEC 14772-1:1997 Virtual Reality Modeling Language (VRML97). The VRML Consortium Incorporated, 1997.

....languages [20] The idea is to produce real applications for selected tasks for which the web would not be acceptable owing to its intrinsic limits. Another aspect under investigation is related to the representation of the information exploiting the emerging standard for 3D visualization [21]. These efforts constitute the next steps towards making network management easy and accessible to everybody. 7. Acknowledgments The author would like to thank Bela Ban and the users and early adopters of Liaison 8 who have greatly contributed with all their comments and suggestions. 8. ....

G. Bell, A. Parisi and M. Pesce, The Virtual Reality Modeling Language (VRML), Version 1.0, May 1995.

....model is converted into a file format that is appropriate for visualisation. 5. VRML Virtual Reality Modelling Language (VRML) is a file format for describing interactive 3 D objects and scenes to be experienced on the World Wide Web (WWW) The first release of the VRML specification (VRML 1. 0) [9] was created by Silicon Graphics Inc. and based on the Open Inventor file format. Now, with the introduction of VRML 2.0 (Moving Worlds) VRML is considered to be the de facto standard for describing and sharing 3 D interactive worlds over the WWW. We have chosen VRML to store surface ....

G. Bell, A. Parisi, and M. Pesce. The virtual reality modeling language, version 1.0C specification. Technical Report http://vag.vrml.org/, January 1996.

....[Kurlander et al. 1996] a text based chat system, generates a comic strip representing the conversation among users. Several multi user environments with a shared 3D virtual space have been developed. For example, Community Place 2 [Sony 1997] is a text based chat system implemented on VRML2.0 [Bell et al. 1997]. Some desktop conferencing systems, like InterSpace [Sugawara et al. 1994] and FreeWalk, provide a 3D view of the current meeting status: how many people are in the space, who is talking with whom, and so on. They require more bandwidth for providing live video and audio channels. From Figure ....

G. Bell, R. Carey and C. Marrin, "The Virtual Reality Modeling Language," http://webspace.sgi.com/moving-worlds/, 1997.

No context found.

G. Bell, A. Parisi, and M.Pesce. VRML, The Virtual Reality Modeling Language. International Standard ISO/IEC 14772-1:1997, http://www.vrml.org/Specifications.

No context found.

G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language (VRML) Specification, august 1996.

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G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language (VRML) Specification, august 1996.

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G. Bell, A. Parisi, M. Pesce, "The Virtual Reality Modeling Language", http://sdsc.edu/SDSC/Partners/vrml/Archives/vrml10-3.html, 1995.

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Bell, G., Parisi, A., and Pesce, M. (1995). The virtual reality modeling language. Internet: http://www.vrml.org. VRML 1.0 Specication.

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G. Bell, R. Carey, and C. Marrin. The Virtual Reality Modeling Language (VRML) Specification, august 1996.

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R. Carey, G. Bell, and C. Marrin, "The Virtual Reality Mode ling Language". Apr. 1997, ISO/IEC DIS 14772-1. [Online]: http://www.web3d.org/Specifications/.

No context found.

Carey, R., Bell, G. and Marrin, C. ISO/IEC 14772-2:2001, The Virtual Reality Modeling Language (VRML) - Part 2: External authoring interface (EAI) see at http://www.web3d.org/fs_specifications.htm.

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G. Bell, A. Parisi, and M. Pesce. The virtual reality modeling language, version 1.0 speci#cation. #www#http:##vrml#wired.com#vrml.tech#, 1995.

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