Efficient Light Propagation for Multiple Anisotropic Volume Scattering

Max, Nelson

doi:10.1007/978-3-642-87825-1_7

Cited by 57 publications

(50 citation statements)

References 24 publications

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“…Also, our methods can store photons from multiple light sources in one volume, while previous methods do not support multiple light sources. The method of Max [20,21] is more accurate than ours but runs slowly. The idea of tracing photons on the lattice links is general and might be applied to other lattices such as the CC lattice.…”

Section: Discussionmentioning

confidence: 80%

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Lattice-Based Volumetric Global Illumination

Qiu

Fan

et al. 2007

IEEE Trans. Visual. Comput. Graphics

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Abstract-We describe a novel volumetric global illumination framework based on the Face-Centered Cubic (FCC) lattice. An FCC lattice has important advantages over a Cartesian lattice. It has higher packing density in the frequency domain, which translates to better sampling efficiency. Furthermore, it has the maximal possible kissing number (equivalent to the number of nearest neighbors of each site), which provides optimal 3D angular discretization among all lattices. We employ a new two-pass (illumination and rendering) global illumination scheme on an FCC lattice. This scheme exploits the angular discretization to greatly simplify the computation in multiple scattering and to minimize illumination information storage. The GPU has been utilized to further accelerate the rendering stage. We demonstrate our new framework with participating media and volume rendering with multiple scattering, where both are significantly faster than traditional techniques with comparable quality.

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Section: Discussionmentioning

confidence: 80%

“…Rushmeier and Torrance [27] have exploited the zonal method for isotropic scattering. Max [20] has extended the discrete ordinates method to capture anisotropic multiple scattering. Hegeman et al [14] have proposed a two-pass approach for strong forward scattering.…”

Section: Introductionmentioning

confidence: 99%

Lattice-Based Volumetric Global Illumination

Qiu

Fan

et al. 2007

IEEE Trans. Visual. Comput. Graphics

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“…(Max, 1994) and (Nishita et al, 1987) worked on an analytic solution for rendering atmospheric scattering, one of the most studied applications by recent works. Later, (Stam and Fiume, 1993) applied Nishita's model to render turbulent wind fields.…”

Section: Previous Workmentioning

confidence: 99%

Illuminating and Rendering Heterogeneous Participating Media in Real Time Using Opacity Propagation

Giroud

Biri

2011

Proceedings of the International Conference on Computer Graphics Theory and Applications

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Abstract:We present a new approach to illuminate and render single scattering effects in heterogeneous participating media in real time. The medium's density is modeled as a sum of radial basis functions, and is then sampled into a first volumetric grid. We then integrate the extinction function from each light source to each cell in the volume by a fast cell-to-cell propagation process on the GPU, and store the result in a second volume. We finally render both scattering medium and surfaces using a regular step ray-marching from the observer to the nearest surface. As we traverse the medium, we fetch data from both volumes and approximate a solution to the scattering equation. Our method is real-time, easy to implement and to integrate in a larger pipeline.

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“…Kaneda [5] also has simulated the anisotropic scattering in clouds and fog, including a case of multiple scattering. Max [6] extended the rendering to take into account the anisotropic scattering of light inside the cloud, and getting an illuminated corona when the light comes from the back. This method was later reused, using heuristics based on the principle of forward scattering typical of clouds Nishita [7].…”

Section: Renderingmentioning

confidence: 99%