Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
A data-driven reflectance model
ACM SIGGRAPH 2003 Papers
Triple product wavelet integrals for all-frequency relighting
ACM SIGGRAPH 2004 Papers
Lightcuts: a scalable approach to illumination
ACM SIGGRAPH 2005 Papers
View-dependent precomputed light transport using nonlinear Gaussian function approximations
I3D '06 Proceedings of the 2006 symposium on Interactive 3D graphics and games
Direct-to-indirect transfer for cinematic relighting
ACM SIGGRAPH 2006 Papers
Matrix row-column sampling for the many-light problem
ACM SIGGRAPH 2007 papers
Interactive relighting with dynamic BRDFs
ACM SIGGRAPH 2007 papers
A precomputed polynomial representation for interactive BRDF editing with global illumination
ACM Transactions on Graphics (TOG)
A meshless hierarchical representation for light transport
ACM SIGGRAPH 2008 papers
Fast, realistic lighting and material design using nonlinear cut approximation
ACM SIGGRAPH Asia 2008 papers
Imperfect shadow maps for efficient computation of indirect illumination
ACM SIGGRAPH Asia 2008 papers
An efficient GPU-based approach for interactive global illumination
ACM SIGGRAPH 2009 papers
All-frequency rendering of dynamic, spatially-varying reflectance
ACM SIGGRAPH Asia 2009 papers
Virtual spherical lights for many-light rendering of glossy scenes
ACM SIGGRAPH Asia 2009 papers
All-frequency relighting of non-diffuse objects using separable BRDF approximation
EGSR'04 Proceedings of the Fifteenth Eurographics conference on Rendering Techniques
Hierarchical image-space radiosity for interactive global illumination
EGSR'09 Proceedings of the Twentieth Eurographics conference on Rendering
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We propose a novel rendering method which supports interactive BRDF editing as well as relighting on a 3D scene. For interactive BRDF editing, we linearize an analytic BRDF model with basis BRDFs obtained from a principal component analysis. For each basis BRDF, the radiance transfer is precomputed and stored in vector form. In rendering time, illumination of a point is computed by multiplying the radiance transfer vectors of the basis BRDFs by the incoming radiance from gather samples and then linearly combining the results weighted by user-controlled parameters. To improve the level of accuracy, a set of sub-area samples associated with a gather sample refines the glossy reflection of the geometric details without increasing the precomputation time. We demonstrate this program with a number of examples to verify the real-time performance of relighting and BRDF editing on 3D scenes with complex lighting and geometry.