Precomputation-based rendering [electronic resource] / Ravi Ramamoorthi.

By:

Ramamoorthi, Ravi

Material type: Text

TextSeries: Foundations and trends in computer graphics and vision (Online) ; v. 3, issue 4, p. 281-369.Publication details: Hanover, Mass. : Now Publishers, c2009.Description: 1 electronic text (p. [281]-369 : ill. (chiefly col.)) : digital fileISBN:

9781601982216 (electronic)

Subject(s):

DDC classification:

621.36/7 22

LOC classification:

TA1637 .R367 2009

Online resources:

Abstract with links to full text:

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Also available in print.

Contents:

1. Introduction -- 2. Background and basic precomputation method -- 3. Environment maps -- 4. Precomputed radiance transfer -- 5. Basis representations and compression -- 6. Dynamic lighting, view, materials, geometry -- 7. Extensions -- 8. Future research -- 9. Conclusion -- Acknowledgments -- References.

Summary: High quality image synthesis is a long-standing goal in computer graphics. Complex lighting, reflection, shadow and global illumination effects can be rendered with modern image synthesis algorithms, but those methods are focused on offline computation of a single image. They are far from interactive, and the image must be recomputed from scratch when any aspect of the scene changes. On the other hand, real-time rendering often fixes the object geometry and other attributes, such as relighting a static image for lighting design. In these cases, the final image or rendering is a linear combination of basis images or radiance distributions due to individual lights. We can therefore precompute offline solutions to each individual light or lighting basis function, combining them efficiently for real-time image synthesis. Precomputation-based relighting and radiance transfer has a long history with a spurt of renewed interest, including adoption in commercial video games, due to recent mathematical developments and hardware advances. In this survey, we describe the mathematical foundations, history, current research and future directions for precomputation-based rendering.

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High quality image synthesis is a long-standing goal in computer graphics. Complex lighting, reflection, shadow and global illumination effects can be rendered with modern image synthesis algorithms, but those methods are focused on offline computation of a single image. They are far from interactive, and the image must be recomputed from scratch when any aspect of the scene changes. On the other hand, real-time rendering often fixes the object geometry and other attributes, such as relighting a static image for lighting design. In these cases, the final image or rendering is a linear combination of basis images or radiance distributions due to individual lights. We can therefore precompute offline solutions to each individual light or lighting basis function, combining them efficiently for real-time image synthesis. Precomputation-based relighting and radiance transfer has a long history with a spurt of renewed interest, including adoption in commercial video games, due to recent mathematical developments and hardware advances. In this survey, we describe the mathematical foundations, history, current research and future directions for precomputation-based rendering.

Ravi Ramamoorthi (2009) "Precomputation-Based Rendering", Foundations and Trends in Computer Graphics and Vision: Vol. 3: No 4, pp 281-369.

Also available in print.

Mode of access: World Wide Web.

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