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Related Experiment Videos

Temporal radiance caching.

Pascal Gautron1, Kadi Bouatouch, Sumanta Pattanaik

  • 1France Telecom, R&D Division, TECH/IRIS Lab, Cesson-Sévigné, France. pgautron@irisa.fr

IEEE Transactions on Visualization and Computer Graphics
|July 12, 2007
PubMed
Summary
This summary is machine-generated.

This study introduces a new method for fast, high-quality glossy global illumination in animations. It reuses lighting data from previous frames, reducing flicker and speeding up rendering.

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Area of Science:

  • Computer Graphics
  • Rendering Techniques
  • Global Illumination

Background:

  • Traditional global illumination methods can be computationally expensive for animated scenes.
  • Irradiance and radiance caching offer improvements but may still produce artifacts like flickering.

Purpose of the Study:

  • To develop a novel method for fast and high-quality computation of glossy global illumination in animated environments.
  • To reduce rendering times and eliminate flickering artifacts in animated global illumination.

Main Methods:

  • Leveraging temporal coherence through sparse temporal sampling and interpolation of indirect lighting.
  • Reusing global illumination solutions from previous frames, adapting updates based on changes in incoming radiance.
  • Implementing temporal gradients for smooth interpolation and utilizing graphics hardware for performance.

Main Results:

  • Significant speedup in rendering compared to frame-by-frame computation.
  • Effective removal of flickering artifacts through temporal data reuse.
  • Straightforward implementation into existing renderers without complex data structures.

Conclusions:

  • The proposed method offers an efficient and robust solution for glossy global illumination in animations.
  • Temporal coherence and adaptive data reuse are key to achieving high quality and performance.
  • The technique is easily integrated into current rendering pipelines, enhancing usability.