Radiosity and realistic image synthesis
Radiosity and realistic image synthesis
Realistic image synthesis using photon mapping
Realistic image synthesis using photon mapping
A frequency analysis of light transport
ACM SIGGRAPH 2005 Papers
A novel hemispherical basis for accurate and efficient rendering
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
Radiance cache splatting: a GPU-friendly global illumination algorithm
EGSR'05 Proceedings of the Sixteenth Eurographics conference on Rendering Techniques
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Radiance and irradiance caching are efficient global illumination algorithms based on interpolating indirect illumination from a sparse set of cached values. In this paper we propose an adaptive algorithm for guiding spatial density of the cached values in radiance and irradiance caching. The density is adapted to the rate of change of indirect illumination in order to avoid visible interpolation artifacts and produce smooth interpolated illumination. In addition, we discuss some practical problems arising in the implementation of radiance and irradiance caching, and propose techniques for solving those problems. Namely, the neighbor clamping heuristic is proposed as a robust means for detecting small sources of indirect illumination and for dealing with problems caused by ray leaking through small gaps between adjacent polygons.