A signal-processing framework for inverse rendering
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Interactive Design of Complex Time-Dependent Lighting
IEEE Computer Graphics and Applications
IEEE Transactions on Pattern Analysis and Machine Intelligence
All-frequency shadows using non-linear wavelet lighting approximation
ACM SIGGRAPH 2003 Papers
Clustered principal components for precomputed radiance transfer
ACM SIGGRAPH 2003 Papers
A data-driven reflectance model
ACM SIGGRAPH 2003 Papers
Triple product wavelet integrals for all-frequency relighting
ACM SIGGRAPH 2004 Papers
All-frequency interactive relighting of translucent objects with single and multiple scattering
ACM SIGGRAPH 2005 Papers
All-frequency relighting of glossy objects
ACM Transactions on Graphics (TOG)
Inverse shade trees for non-parametric material representation and editing
ACM SIGGRAPH 2006 Papers
Interactive relighting with dynamic BRDFs
ACM SIGGRAPH 2007 papers
A theory of locally low dimensional light transport
ACM SIGGRAPH 2007 papers
All-frequency precomputed radiance transfer for glossy objects
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
All-frequency relighting of non-diffuse objects using separable BRDF approximation
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
Interactive rendering with arbitrary BRDFs using separable approximations
EGWR'99 Proceedings of the 10th Eurographics conference on Rendering
Precomputed radiance transfer for real-time indirect lighting using a spectral mesh basis
EGSR'07 Proceedings of the 18th Eurographics conference on Rendering Techniques
Precomputed radiance transfer for dynamic scenes taking into account light interreflection
EGSR'07 Proceedings of the 18th Eurographics conference on Rendering Techniques
Exploiting temporal coherence for incremental all-frequency relighting
EGSR'06 Proceedings of the 17th Eurographics conference on Rendering Techniques
Precomputation-Based Rendering
Foundations and Trends® in Computer Graphics and Vision
All-frequency rendering of dynamic, spatially-varying reflectance
ACM SIGGRAPH Asia 2009 papers
Sparsely precomputing the light transport matrix for real-time rendering
EGSR'10 Proceedings of the 21st Eurographics conference on Rendering
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Interactive rendering with dynamic natural lighting and changing view is a long-standing goal in computer graphics. Recently, precomputation-based methods for all-frequency relighting have made substantial progress in this direction. Many of the most successful algorithms are based on a factorization of the BRDF into incident and outgoing directions, enabling each term to be precomputed independent of viewing direction, and re-combined at run-time. However, there has so far been no theoretical understanding of the accuracy of this factorization, nor the number of terms needed. In this paper, we conduct a theoretical and empirical analysis of the BRDF in-out factorization. For Phong BRDFs, we obtain analytic results, showing that the number of terms needed grows linearly with the Phong exponent, while the factors correspond closely to spherical harmonic basis functions. More generally, the number of terms is quadratic in the frequency content of the BRDF along the reflected or half-angle direction. This analysis gives clear practical guidance on the number of factors needed for a given material. Different objects in a scene can each be represented with the correct number of terms needed for that particular BRDF, enabling both accuracy and interactivity.