All-frequency interactive relighting of translucent objects with single and multiple scattering

Wang, Rui; Tran, John; Luebke, David

doi:10.1145/1073204.1073333

Cited by 58 publications

(35 citation statements)

References 22 publications

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“…It was first used to accelerate MC algorithms [24], [27] and then several papers extended these algorithms to improve their quality [7], [10], [11], [32]. Recently, the dipole diffusion BSSRDF has been used to create real-time algorithms [5], [6], [8], [21], [22], [31], [33], [34]; included in precomputed radiance transfer systems [41], [48]; and scaled to large scenes using a Light cuts based algorithm [2], [46].…”

Section: Dipole Diffusion Algorithmsmentioning

confidence: 99%

Heterogeneous Subsurface Scattering Using the Finite Element Method

Arbree

Walter

Bala

2011

IEEE Trans. Visual. Comput. Graphics

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Abstract-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. This formulation has two key elements: an accurate model of the reduced intensity (RI) source, the diffusive source boundary condition (DSBC), and its associated render query function. Second, we solve this formulation accurately and efficiently using the FE method. Using there results, 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 nearly match path traced references, that required hours.

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Section: Dipole Diffusion Algorithmsmentioning

confidence: 99%

Heterogeneous Subsurface Scattering Using the Finite Element Method

Arbree

Walter

Bala

2011

IEEE Trans. Visual. Comput. Graphics

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“…However, for wavelet-based relighting, a trade-off has to be made when choosing between global and local frames since rotation is not easy for a wavelet basis. Previous wavelet-based work [8,9,[19][20][21] uses global-frame parameterization.…”

Section: Figmentioning

confidence: 99%

“…The use of wavelets as basis enables adaptive all-frequency relighting of complex scenes [7][8][9][19][20][21]. However, most of the up-to-date techniques project spherical functions onto cubemaps.…”

Section: Related Workmentioning

confidence: 99%

Real-time triple product relighting using spherical local-frame parameterization

Hsiao

Lee

et al. 2006

Visual Comput

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This paper addresses the problem of real-time rendering for objects with complex materials under varying allfrequency illumination and changing view. Our approach extends the triple product algorithm by using local-frame parameterization, spherical wavelets, per-pixel shading and visibility textures. Storing BRDFs with local-frame parameterization allows us to handle complex BRDFs and incorporate bump mapping more easily. In addition, it greatly reduces the data size compared to storing BRDFs with respect to the global frame. The use of spherical wavelets avoids uneven sampling and energy normalization of cubical parameterization. Finally, we use per-pixel shading and visibility textures to remove the need for fine tessellations of meshes and shift most computation from vertex shaders to more powerful pixel shaders. The resulting system can render scenes with realistic shadow effects, complex BRDFs, bump mapping and spatially-varying BRDFs under varying complex illumination and changing view at real-time frame rates on modern graphics hardware.

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“…With the precomputation, images can be rendered in real-time frame rate. Wang et al [WTL05] presented a technique for interactive rendering of translucent objects under all-frequency environment maps. The equations of single and multiple scattering terms are reformulated based on the precomputed light transport.…”

Section: Introductionmentioning

confidence: 99%