computer graphics & visualization

Interactive Screen-Space Accurate Photon Tracing on GPUs

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Our GPU Photon Tracing Pipeline

5/153

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Our GPU Photon Tracing Pipeline

Depth Peeling

Line Rasterization

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Our GPU Photon Tracing Pipeline

Depth Peeling

Line Rasterization

Sprite Rendering

Ray/Scene Intersections

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Ray/Scene Intersections

Our GPU Photon Tracing Pipeline

Depth Peeling

Line Rasterization

Sprite Rendering+

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Light/Caustics Ray Rasterization

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Light/Caustics Ray Rasterization

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Light/Caustics Ray Rasterization

Reduce Min

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Light/Caustics Ray Rasterization

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Splat Rendering

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Demos

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Results

Demo

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

Conclusion & Future Work• Interactivity• Correct “caustics shadowing”• Screen Space accuracy• Versatility

• Screen Space accuracy• Screen-Space visibility

computer graphics & visualization

Image Synthesis – WS 07/08Dr. Jens Krüger – Computer Graphics and Visualization Group

The End

Thank you!Any questions?

Download: Slides, Papers, Images, Videos, etc. at http://wwwcg.in.tum.de/Research/