Precomputed local radiance transfer for real-time lighting design

This paper introduces a new method for real-time relighting of scenes illuminated by local light sources. We extend previous work on precomputed radiance transfer for distant lighting to local lighting by introducing the concept of unstructured light clouds. The unstructured light cloud enables a compact representation of local lights in the model and real-time rendering of complex models with full global illumination due to local light sources. We use simplification of lights, and clustered PCA to obtain a compressed representation. When storing only the indirect component of the illumination, we are able to get high quality with only 8-16 lighting coefficients per vertex. Our results demonstrate real-time rendering of scenes with moving lights, dynamic cameras, glossy materials and global illumination.

[1]  Jan Kautz,et al.  Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments , 2002 .

[2]  Philipp Slusallek,et al.  Interactive Global Illumination , 2002 .

[3]  Wei-Chao Chen,et al.  Light field mapping: efficient representation and hardware rendering of surface light fields , 2002, SIGGRAPH.

[4]  Jan Kautz,et al.  Fast Arbitrary BRDF Shading for Low-Frequency Lighting Using Spherical Harmonics , 2002, Rendering Techniques.

[5]  P. J. Green,et al.  Density Estimation for Statistics and Data Analysis , 1987 .

[6]  Eero P. Simoncelli,et al.  Efficient Linear Re-rendering for Interactive Lighting Design , 1997 .

[7]  James T. Kajiya,et al.  The rendering equation , 1986, SIGGRAPH.

[8]  Pat Hanrahan,et al.  Frequency space environment map rendering , 2002, SIGGRAPH.

[9]  Rui Wang,et al.  Eurographics Symposium on Rendering (2004) All-frequency Relighting of Non-diffuse Objects Using Separable Brdf Approximation , 2022 .

[10]  Philipp Slusallek,et al.  Interactive Global Illumination using Fast Ray Tracing , 2002, Rendering Techniques.

[11]  Pat Hanrahan,et al.  Triple product wavelet integrals for all-frequency relighting , 2004, ACM Trans. Graph..

[12]  Hans-Peter Seidel,et al.  Spherical harmonic gradients for mid-range illumination , 2004 .

[13]  Carlo H. Séquin,et al.  Parameterized Ray-tracing , 1989, SIGGRAPH '89.

[14]  Pat Hanrahan,et al.  All-frequency shadows using non-linear wavelet lighting approximation , 2003, ACM Trans. Graph..

[15]  Tomas Akenine-Möller,et al.  A geometry-based soft shadow volume algorithm using graphics hardware , 2003, ACM Trans. Graph..

[16]  Nanda Kambhatla,et al.  Dimension Reduction by Local Principal Component Analysis , 1997, Neural Computation.

[17]  Julie Dorsey,et al.  Effic ient Re-rendering of Naturally Illuminated Environments , 1994 .

[18]  H. Jensen.  Realistic Image Synthesis Using Photon Mapping , 2001 .

[19]  Charles E. Heckler,et al.  Applied Multivariate Statistical Analysis , 2005, Technometrics.

[20]  Peter-Pike J. Sloan,et al.  Clustered principal components for precomputed radiance transfer , 2003, ACM Trans. Graph..

[21]  Jon Louis Bentley,et al.  Multidimensional binary search trees used for associative searching , 1975, CACM.

[22]  Kazufumi Kaneda,et al.  A Quick Rendering Method Using Basis Functions for Interactive Lighting Design , 1995, Comput. Graph. Forum.

[23]  Donald P. Greenberg,et al.  Design and simulation of opera lighting and projection effects , 1991, SIGGRAPH.

[24]  David Salesin,et al.  Surface light fields for 3D photography , 2000, SIGGRAPH.

[25]  Harry Shum,et al.  Eurographics Symposium on Rendering (2004) All-frequency Precomputed Radiance Transfer for Glossy Objects , 2022 .

[26]  Pat Hanrahan,et al.  A fast relighting engine for interactive cinematic lighting design , 2000, SIGGRAPH.

[27]  James Arvo,et al.  Interactive design of complex time dependent lighting , 1995, IEEE Computer Graphics and Applications.

[28]  Pierre Poulin,et al.  Hierarchical view-dependent structures for interactive scene manipulation , 1996, SIGGRAPH.