Retro-rendering with vector-valued light: producing local illumination from the transport equation

16 January 2006 Retro-rendering with vector-valued light: producing local illumination from the transport equation

David C. Banks, Kevin M. Beason

Proceedings Volume 6060, Visualization and Data Analysis 2006; 60600C (2006) https://doi.org/10.1117/12.650855
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

Many rendering algorithms can be understood as numerical solvers for the light-transport equation. Local illumination is probably the most widely implemented rendering algorithm: it is simple, fast, and encoded in 3D graphics hardware. It is not, however, derived as a solution to the light-transport equation. We show that the light-transport equation can be re-interpreted to produce local illumination by using vector-valued light and matrix-valued reflectance. This result fills an important gap in the theory of rendering. Using this framework, local and global illumination result from merely changing the values of parameters in the governing equation, permitting the equation and its algorithmic implementation to remain fixed.

Citation Download Citation

David C. Banks and Kevin M. Beason "Retro-rendering with vector-valued light: producing local illumination from the transport equation", Proc. SPIE 6060, Visualization and Data Analysis 2006, 60600C (16 January 2006); https://doi.org/10.1117/12.650855

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