Title

Making Radiance And Irradiance Caching Practical: Adaptive Caching And Neighbor Clamping

Abstract

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. © The Eurographics Association 2006.

Publication Date

12-1-2007

Publication Title

ACM SIGGRAPH 2007 Papers - International Conference on Computer Graphics and Interactive Techniques

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

Socpus ID

79960165101 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/79960165101

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