Take a look at the new version of this page: [ beta version ]. Tell us what you think.

ABSTRACT

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.

REFERENCES

• 1: Annen, T., Kautz, J., Durand, F., and Seidel, H.-P. 2004. Spherical Harmonic Gradients for Mid-Range Illumination. In Eurographics Symposium on Rendering, 331--336.
• 2: Ulf Assarsson , Tomas Akenine-Möller, A geometry-based soft shadow volume algorithm using graphics hardware, ACM Transactions on Graphics (TOG), v.22 n.3, July 2003
• 3: Jon Louis Bentley, Multidimensional binary search trees used for associative searching, Communications of the ACM, v.18 n.9, p.509-517, Sept. 1975 [doi>10.1145/361002.361007]
• 4: Normand Brière , Pierre Poulin, Hierarchical view-dependent structures for interactive scene manipulation, Proceedings of the 23rd annual conference on Computer graphics and interactive techniques, p.83-90, August 1996 [doi>10.1145/237170.237211]
• 5: Wei-Chao Chen , Jean-Yves Bouguet , Michael H. Chu , Radek Grzeszczuk, Light field mapping: efficient representation and hardware rendering of surface light fields, ACM Transactions on Graphics (TOG), v.21 n.3, July 2002
• 6: Dobashi, Y., Kaneda, K., Nakatani, H., and Yamashita, H. 1995. A Quick Rendering Method Using Basis Functions for Interactive Lighting Design. Computer Graphics Forum 14, 3, 229--240.
• 7: Julie O'B. Dorsey , Françis X. Sillion , Donald P. Greenberg, Design and simulation of opera lighting and projection effects, Proceedings of the 18th annual conference on Computer graphics and interactive techniques, p.41-50, July 1991
• 8: Julie Dorsey , James Arvo , Donald Greenberg, Interactive Design of Complex Time-Dependent Lighting, IEEE Computer Graphics and Applications, v.15 n.2, p.26-36, March 1995 [doi>10.1109/38.365003]
• 9: Reid Gershbein , Pat Hanrahan, A fast relighting engine for interactive cinematic lighting design, Proceedings of the 27th annual conference on Computer graphics and interactive techniques, p.353-358, July 2000 [doi>10.1145/344779.344938]
• 10: Henrik Wann Jensen, Realistic image synthesis using photon mapping, A. K. Peters, Ltd., Natick, MA, 2001
• 11: R. A. Johnson , D. W. Wichern, Applied multivariate statistical analysis, Prentice-Hall, Inc., Upper Saddle River, NJ, 1988
• 12: James T. Kajiya, The rendering equation, Proceedings of the 13th annual conference on Computer graphics and interactive techniques, p.143-150, August 1986
• 13: Nandakishore Kambhatla , Todd K. Leen, Dimension reduction by local principal component analysis, Neural Computation, v.9 n.7, p.1493-1516, Oct. 1, 1997 [doi>10.1162/neco.1997.9.7.1493]
• 14: Jan Kautz , Peter-Pike Sloan , John Snyder, Fast, arbitrary BRDF shading for low-frequency lighting using spherical harmonics, Proceedings of the 13th Eurographics workshop on Rendering, June 26-28, 2002, Pisa, Italy
• 15: Liu, X., Sloan, P.-P., Shum, H.-Y., and Snyder, J. 2004. All-Frequency Precomputed Radiance Transfer for Glossy Objects. In Eurographics Symposium on Rendering.
• 16: Ren Ng , Ravi Ramamoorthi , Pat Hanrahan, All-frequency shadows using non-linear wavelet lighting approximation, ACM Transactions on Graphics (TOG), v.22 n.3, July 2003
• 17: Ren Ng , Ravi Ramamoorthi , Pat Hanrahan, Triple product wavelet integrals for all-frequency relighting, ACM Transactions on Graphics (TOG), v.23 n.3, August 2004
• 18: Nimeroff, J. S., Simoncelli, E., and Dorsey, J. 1994. Efficient Re-rendering of Naturally Illuminated Environments. In Fifth Eurographics Workshop on Rendering, 359--373.
• 19: Ravi Ramamoorthi , Pat Hanrahan, Frequency space environment map rendering, ACM Transactions on Graphics (TOG), v.21 n.3, July 2002
• 20: C. H. Séquin , E. K. Smyrl, Parameterized Ray-tracing, Proceedings of the 16th annual conference on Computer graphics and interactive techniques, p.307-314, July 1989
• 21: Silverman, B. 1986. Density Estimation for Statistics and Data Analysis. Chapman and Hall.
• 22: Peter-Pike Sloan , Jan Kautz , John Snyder, Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments, ACM Transactions on Graphics (TOG), v.21 n.3, July 2002
• 23: Peter-Pike Sloan , Jesse Hall , John Hart , John Snyder, Clustered principal components for precomputed radiance transfer, ACM Transactions on Graphics (TOG), v.22 n.3, July 2003
• 24: Patrick C. Teo , Eero P. Simoncelli , David J. Heeger, Efficient Linear Re-rendering for Interactive Lighting Design, Stanford University, Stanford, CA, 1997
• 25: Ingo Wald , Thomas Kollig , Carsten Benthin , Alexander Keller , Philipp Slusallek, Interactive global illumination using fast ray tracing, Proceedings of the 13th Eurographics workshop on Rendering, June 26-28, 2002, Pisa, Italy
• 26: Wang, R., Tran, J., and Luebke, D. 2004. All-Frequency Relighting of Non-Diffuse Objects using Separable BRDF Approximation. In Eurographics Symposium on Rendering.
• 27: Daniel N. Wood , Daniel I. Azuma , Ken Aldinger , Brian Curless , Tom Duchamp , David H. Salesin , Werner Stuetzle, Surface light fields for 3D photography, Proceedings of the 27th annual conference on Computer graphics and interactive techniques, p.287-296, July 2000 [doi>10.1145/344779.344925]

INDEX TERMS

Primary Classification:
  I. Computing Methodologies
  I.3 COMPUTER GRAPHICS
      I.3.7 Three-Dimensional Graphics and Realism

Keywords:
global illumination, lighting design, precomputed radiance transfer, real-time rendering