A radiative transfer framework for rendering materials with anisotropic structure
ACM SIGGRAPH 2010 papers
Recent advances in physically-based appearance modeling of cloth
SIGGRAPH Asia 2012 Courses
A practical analytic model for the radiosity of translucent scenes
Proceedings of the ACM SIGGRAPH Symposium on Interactive 3D Graphics and Games
Modular flux transfer: efficient rendering of high-resolution volumes with repeated structures
ACM Transactions on Graphics (TOG) - SIGGRAPH 2013 Conference Proceedings
Solid texture synthesis for heterogeneous translucent materials
The Visual Computer: International Journal of Computer Graphics
Photon beam diffusion: a hybrid Monte Carlo method for subsurface scattering
EGSR '13 Proceedings of the Eurographics Symposium on Rendering
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Materials with visually important heterogeneous subsurface scattering, including marble, skin, leaves, and minerals are common in the real world. However, general, accurate, and efficient rendering of these materials is an open problem. In this paper, we describe a finite element (FE) solution of the heterogeneous diffusion equation (DE) that solves this problem. Our algorithm is the first to use the FE method to solve the difficult problem of heterogeneous subsurface rendering. To create our algorithm, we make two contributions. First, we correct previous work and derive an accurate and complete heterogeneous diffusion formulation with two key elements: the diffusive source boundary condition (DSBC)—an accurate model of the reduced intensity (RI) source—and its associated render query function. Second, we solve this formulation accurately and efficiently using the FE method. With these contributions, we can render subsurface scattering with a simple four step algorithm. To demonstrate that our algorithm is simultaneously general, accurate, and efficient, we test its performance on a series of difficult scenes. For a wide range of materials and geometry, it produces, in minutes, images that match path traced references, that required hours.