X3D: Real Time 3D Solution for the web Web3D Tech Talk – SIGGRAPH 2008

X3D: Real Time 3D Solution for the web Web3D Tech Talk – SIGGRAPH 2008

• Fraunhofer Foundation• Mission: “Application oriented research for

industry and advantage of our society “

• Figures 2007

• 62 Institutes

• 13 600 Employees

• 1.3 Billion € Budget

• 2/3 research projects for industry

• 1/3 public funding

• Institute for Computer Graphics, Darmstadt

• 120 Employees

• 20 Employees in VR/AR Group


• 15 Years of research in VR/AR• 1st Generation

• 1992 start of VR-Activities• 2nd Generation

• 1994 1st Fraunhofer VR System• 1994 First 5 sided CAVE in Germany• 1995 Founding VR-Spinoff: VR-COM

• 3rd Generation• 2000 OpenSG (LGPL Scene Graph)• 2002 Avalon VR System (X3D based)• 2005 InstantReality VR/AR Middleware• 2008 HEyeWall 2.0 ( 35 Billion Pixel)


• Increasing need for a flexible runtime environment

• Scalability is key requirement• Application Behavior

From Walkthrough to complex non-linear storytelling/game environments

• Interaction and NavigationFrom stateless single device => Sensor-Fusion Systems with complex device setups

• Image synthesis/RenderingFrom PDA to Multi-Screen/CPU/GPU-Cluster


• There is no Standard for VR/AR applications and runtime systems

• X3D ISO Standard, describes an abstract functional behavior and time-based interactive 3D environment

• Multi-parent Scenegraph• Behavior-graph• Runtime System• IO Device Independent• High level interaction• Portable• Xml/classic/binary encodings


• X3D utilized as basis for an VR/AR application description language• Solid ISO foundation• Extensibility leaves room for

VR/AR extensions and research• Immersive interaction• Distributed rendering• Mixed Reality


• “Beyond the Desktop” Interaction• Low-level data-stream sensors for direct data access

(e.g. 6D tracker, images).

• X3D PointingSensor in Immersive Environments

• UserBody nodes/states trigger PS

• UserBody nodes transform rays and collision obj.

• Multi-UserBody-nodes lead to multi-hand/user

• Additional unrestricted 6D PS-extension

• Navigation Framework

• Works seamless with X3D Bindable concept

• Allows flexible method prototyping (e.g. go-go)


• Distributed Rendering• Sort-first and Sort-last support• Dynamic load distribution

• Fully automatic method• 2x to 5x performance increase

with typical CAD data• Scales almost linear with

GPU/CPU Boxes


• Mixed Reality Lighting • Real-time global illumination

using Precomputed radiance transfer

• Updates shading form video-stream in real-time

• Details in Web3D 07/08 paper• Live-demos at the Web3D-booth


• Resources• a4www.igd.fraunhofer.de

• www.instantreality.org

• Beta5 release

• 30 Device Handler• Distributed Rendering/IO• IO-Handler-SDK• Windows/Mac/Linux

• www.opensg.org• LGPL source• Rendering

http://www.instantreality.org/

http://www.opensg.org/

X3D: Real Time 3D Solution for the web Web3D Tech Talk – SIGGRAPH 2008

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