http://www.tu-ilmenau.de

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Prof. Dr. sc. techn. Beat Brüderlin

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INHALTE

Real-time Ray Traicing

We present «vertex tracing», a new approach to adaptive progressive ray tracing. The software achieves near real-time rendering performance of physically accurate reflection effects on specified scene objects, even with complex scenes in virtual reality applications.

Example: Simulation of light reflections on an instrument cover of a truck in a virtual reality environment. The scene consists of approximately 100,000 polygons. A frame rate of 5 frames per second at preview quality is achieved on a Pentium (900Mhz) / GeForce-2 graphics accelerator for OpenGL.

 

The approach is based on hybrid rendering, combining an OpenGL-generated scene with correct reflection characteristics of selected scene objects. The real-time performance of the vertex tracer is achieved with progressive adaptive refinement of the geometry in object space, and with parallelization of the algorithm. Both, shared memory and distributed memory architectures have been investigated. Mesh-based load balancing yields a uniform distribution of the computing load, also in a heterogeneous network with resources of widely varying performance.

 

Publikations

Thomas Ullmann, Daniel Beier, Beat Brüderlin, Alexander Schmidt:
Adaptive Progressive Vertex Tracing for Interactive Reflections.
in: A. Chalmers, M.-T. Rhyne (Eds.): Proceedings of Eurographics 2001 Conference, Manchester, England, UK, 4-7 September 2001. Computer Graphics Forum 20(3), September 2001.

Thomas Ullmann, Daniel Beier, Beat Brüderlin, Alexander Schmidt:
Adaptive Progressive Vertex Tracing in Distributed Environments.
in: Proceedings of the Ninth Pacific Conference on Computer Graphics and Applications (Pacific Graphics 2001), Tokyo, Japan, 16-18 October 2001. IEEE, Oktober 2001, pp. 285-294.

Thomas Ullmann, Daniel Beier, Beat Brüderlin, Alexander Schmidt:
Adaptive Progressive Vertex Tracing in Distributed Environments.
in: Dietmar Saupe, Philipp Slusallek (Eds.): Proceedings of Graphiktag 2001, Tübingen, Germany, 8 November 2001. Wilhelm-Schickard-Institut für Informatik, Graphisch-Interaktive Systeme, Universität Tübingen, Tübingen, Germany, November 2001, pp. 34-43.