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Searching for authors named "George Drettakis" – sorted by Relevance.

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  • Simplifying the Representation of Radiance from Multiple Emitters  
  • by George Drettakis — 1994 — In Proceedings of 5th EG Workshop on Rendering
  • …this paper we propose a solution to this problem, by extending the techniques developed for discontinuity meshing and structured sampling [DrFi93, DrFi94, Dret94]. Throughout we consider only environments of diffusely reflecting surfaces lit by diffusely emitting sources. In the following section we…
  • Cited by 8 (3 self) – Add To MetaCart
  • Hierarchical Parallelism for a Global Illumination Algorithm  
  • by George Drettakis — 1990
  • …Global illumination algorithms can create highly-realistic computer generated images. FIAT is a global illumination algorithm developed at the University of Toronto that uses an adaptive space subdivision technique, and relies on discrete approximation to simulate the distribution of light through t…
  • Cited by 1 (1 self) – Add To MetaCart
  • Controlling Memory Consumption of Hierarchical Radiosity with Clustering  
  • by Xavier Granier, George Drettakis — 1999 — In Graphics Interface
  • …Memory consumption is a major limitation of current hierarchical radiosity algorithms, including those using clustering. To overcome this drawback we present a new algorithm which reduces the storage required for both the hierarchy of subdivided elements and the links representing light transfers. O…
  • Cited by 5 (1 self) – Add To MetaCart
  • Flexible point-based rendering on mobile devices  
  • by Florent Duguet, George Drettakis — 2004 — IEEE Computer Graphics and Applications
  • …Point-based rendering is a compact and efficient means of displaying complex geometry. Our goal is to enable flexible point-based rendering, permitting local image refinement, required for example when zooming into very complex scenes, and efficient shadow computations. We use hierarchical packed po…
  • Cited by 14 (0 self) – Add To MetaCart
  • Concrete Computation of Global Illumination Using Structured Sampling  
  • by George Drettakis, Eugene Fiume — 1992 — In Third Eurographics Workshop on Rendering
  • …A new methodology is presented for the computation of global illumination using structured sampling. Analytical/numerical solutions for illumination are developed for simple lighting configurations. These solutions are subsequently used to generate accurate reference images. The structured sampling …
  • Cited by 9 (4 self) – Add To MetaCart
  • Interactive High-Quality Soft Shadows in Scenes with Moving Objects  
  • by Celine Loscos, George Drettakis — 1997 — In EUROGRAPHICS '97
  • …Interactive rendering of soft shadows (or penumbra) in scenes with moving objects is a challenging problem. High quality walkthrough rendering of static scenes with penumbra can be achieved using pre-calculated discontinuity meshes, which provide a triangulation well adapted to penumbral boundaries,…
  • Cited by 6 (0 self) – Add To MetaCart
  • Structured Penumbral Irradiance Computation  
  • by George Drettakis, Eugene Fiume — 1996
  • …A definitive understanding of irradiance behavior in penumbral regions has been hard to come by, mainly due to the computational expense of determining the visible parts of an area light source. Consequently, sampling strategies have been mostly ad hoc, and evaluation of the resulting approximations…
  • Cited by 3 (3 self) – Add To MetaCart
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