Rendering of translucent objects based upon PRT techniques

Authors:
Zhang Jiawan;Gao Yang;Sun Jizhou;Jin Zhou
Affiliations:
School of Computer Science and Technology, Tianjin University, Tianjin, P.R. China;School of Computer Science and Technology, Tianjin University, Tianjin, P.R. China;School of Computer Science and Technology, Tianjin University, Tianjin, P.R. China;School of Computer Science and Technology, Tianjin University, Tianjin, P.R. China
Venue:
ICCSA'07 Proceedings of the 2007 international conference on Computational science and its applications - Volume Part III
Year:
2007

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Abstract

We propose a framework for translucent objects rendering based on precomputed light transport. We apply the two-pass hierarchical technique by Jensen in the space of non-linearly approximated transport vectors, which allows us to efficiently evaluate transport vectors due to diffuse multiple scattering. Single scattering is incorporated too by considering Wang Rui's approximation. A technique from BRDF rendering is introduced to factor the phase function using a separable decomposition by Kautz to allow for decoupled precomputation and rendering. Using this approach, we achieve interactive frame rates comparable to the state-of-the-art systems.