B. Zeleznik, L. Holden, M. Capps, H. Abrams, and T. Miller, "Scene-graph-as-bus: Collaboration between heterogeneous stand-alone 3-d graphical applications," in EUROGRAPHICS 2000.  Home/Search   Document Details and Download   Summary   Related Articles   Check

....Although XML is used to describe the syntax of network messages in the so called Dynamic Behavior Protocol, the NPSNET approach is clearly code centered. The Scene Graph As Bus approach aims at independent distributed 3D components, which do not adhere to a certain component interface model [15]. The only requirement for 3D applications to communicate is an underlying scene graph API like Open Inventor, Jot or Java3D, which is mapped to a neutral scene graph layer. This layer connects different scene graph oriented 3D applications, which themselves do not even know from each other. 2.3 ....

Zeleznik, B.; Holden., L.; Capps, M.; Abrams, H.; Miller, T.: "Scene-Graph-As-Bus: Collaboration between Heterogeneous Stand-alone 3-D Graphical Applications", In Proceedings of Eurographics 2000, Vol. 19 / Nr. 3.

....forced to actively send synchronization messages in some replication schemes. In our opinion, this makes it more than slightly harder to build a collaborative application. An alternative solution recently popularized by a number of research projects (DIVE [15] Repo 3D [24] Avango [42] SGAB [47]) overcomes these disadvantages by introducing a distributed shared scene graph using the semantics of distributed shared memory. Distribution is performed implicitly through a mechanism that keeps multiple local replicas of a scene graph synchronized without exposing this process to the ....

Zeleznik B., L. Holden, M. Capps, H. Abrams, T. Miller (2000). Scene Graph As Bus: Collaboration between Heterogeneous Stand-alone 3-D Graphical Applications. Proc. EUROGRAPHICS 2000, pp. 91-98.

....forced to actively send synchronization messages in some replication schemes. In our opinion, this makes it more than slightly harder to build a collaborative application. An alternative solution recently popularized by a number of research projects (DIVE [13] Repo 3D [21] Avango [37] SGAB [42]) overcomes these disadvantages by introducing a distributed shared scene graph using the semantics of distributed shared memory. Distribution is performed implicitly through a mechanism that keeps multiple local replicas of a scene graph synchronized without exposing this process to the ....

Zeleznik B., L. Holden, M. Capps, H. Abrams, T. Miller (2000). Scene Graph As Bus: Collaboration between Heterogeneous Standalone 3-D Graphical Applications. Proc. EUROGRAPHICS 2000, pp. 91-98.

....collaborative user interfaces, such as mediaBlocks [36] or multi computer interaction [24, 25] anticipate many of our goals, but do not incorporate stereoscopic 3D graphics. 3 Distributed system architecture Several recent DVE research projects (DIVE [12] Repo 3D [19] Avango [34] SGAB [37]) simplify development by unifying graphical and non graphical application state into a single data structure transparently shared over the network a distributed shared scene graph. Distribution is performed implicitly through a mechanism that keeps multiple local replicas of a scene graph ....

Zeleznik B., L. Holden, M. Capps, H. Abrams, T. Miller (2000). Scene Graph As Bus: Collaboration between Heterogeneous Stand-alone 3-D Graphical Applications. Proc. EUROGRAPHICS 2000, pp. 91-98.

....in [15] and the distribution is not transparent to the application developer, who may even be forced to actively send synchronization messages in some replication schemes. An alternative solution now popularized by a number of research projects (DIVE [8] Repo 3D [15] Avango [28] SGAB [33]) overcomes these disadvantages by introducing a distributed shared scene graph using the semantics of distributed shared memory. Distribution is performed implicitly through a mechanism that keeps multiple local replicas of a scene graph synchronized without exposing this process to the ....

Zeleznik, B., Holden., L., Capps, M., Abrams, H., and Miller, T. Scene-Graph-As-Bus: Collaboration between Heterogeneous Stand-alone 3-D Graphical Applications. Eurographics 2000, August 2000

....goal of 5 FPS at ### # ### camera image resolution, the system generates up to 75 Mbps one way network traffic. We paid much attention to last mile network issues at the test locations to ensure sufficient bandwidth in our testbed. The collaborative tool in our current system is a variant of [26], which can be thought of as a gesture based 3D whiteboard, wherein both users share the same scene graph that can be very quickly sketched on and edited using pointing devices. A user at Site 2 uses a 3D pointing device imitating a virtual laser pointer. While we eventually plan to add ....

....bring up a virtual representation of a patient in order to discuss possible ways to perform some operation, make annotations, and save them later for educational purposes. Scene Graph Sharing Our current implementation takes the first steps in this direction. We modify the implementation of [26] to incorporate the virtual graphics into the renderer described in the next section. The virtual graphics are added to the renderer in a loosely coupled fashion by simply getting a callback when a frame needs to be rendered. We only use a subset of the original functionalities in [26] because we ....

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B. Zeleznik, L. Holden, M. Capps, H. Abrams, and T. Miller. Scene-Graph-As-Bus: Collaboration between Heterogeneous Stand-alone 3-D Graphical Applications. In Eurographics 2000.

....and using a prototype system. This approach has three significant characteristics: unification of the real and virtual worlds for both input and output, tele collaboration between remote participants, and interaction between heterogeneous stand alone 3 dimensional (3D) graphics applications [1]. The system is designed to run on the networks of the future, and it is capable of transmitting blends of dynamic computer graphics and computer vision data in real time. In this text we concentrate on its visual part, in particular on synergy of computer graphics and computer vision systems as a ....

....in each application. This enables free collaboration in computer graphics client communities; it provides a way in which remote participants would be able to use interactive graphics tools that exist in other applications and their use could be meaningful in context of the local application [1]. Future extensions of the system will incorporate new sensory information such as spatialized audio, improved haptics and new interaction devices that provide not one but set of points of presence (ideally a surface) autostereoscopic displays, smart camera clusters where cameras are used for ....

Zeleznik, B., Holden., L., Capps, M., Abrams, H., and Miller, T., "Scene-Graph-As-Bus: Collaboration Between Heterogeneous Stand-alone 3-D Graphical Applications", Eurographics 2000

....The system also includes excellent high performance networking facilities. GMD s Avocado system [Tramberend, 1999] similarly distributes data by transparent replication of the scene graph, in this case that of the Performer graphics library, on sgi systems. The Scene Graph as Bus approach [Zeleznik et al. 2000], part of the National Tele Immersion Initiative, is a proposed mechanism for mapping between heterogeneous scene graphs, in a cross platform manner. 34 2. Internet Based Graphics Technologies As processing and bandwidth capacity has increased across the Internet, the possibility of ....

Bob Zeleznik, Loring Holden, Michael Capps, Howard Zbrams, and Tim Miller. Scene-graph-as-bus: Collaboration between heterogeneous stand-alone 3-d graphical applications. In Proceedings of Eurographics 2000, Interlaken, Switzerland, August 2000.

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B. Zeleznik, L. Holden, M. Capps, H. Abrams, and T. Miller, "Scene-graph-as-bus: Collaboration between heterogeneous stand-alone 3-d graphical applications," in EUROGRAPHICS 2000.

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Bob Zeleznik, Loring Holden, Michael Capps, Howard Abrams, and Tim Miller. Scene-graph-as-bus: Collaboration between heterogeneous stand-alone 3-D graphical applications. In Proc. EUROGRAPHICS 2000.

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