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In Proceedings of Short paper at Eurographics

Separable Approximation of Ambient Occlusion

Jing Huang, Tamy Boubekeur, Tobias Ritschel, Matthias Hollaender, and Elmar Eisemann

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Ambient occlusion (AO) provides an effective approximation to global illumination that enjoys widespread use amongst practitioners. In this paper, we present a fast easy-to-implement separable approximation to screen space ambient occlusion. Computing occlusion first along a single direction and then transporting this occlusion into a second pass that is stochastically evaluating the final shading based on the AO estimates proves extremely efficient. Combined with interleaved sampling and geometry-aware blur, visually convincing results close to a non-separable occlusion can be obtained at much higher performance.

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Jing Huang, Tamy Boubekeur, Tobias Ritschel, Matthias Hollaender, and Elmar Eisemann, Separable Approximation of Ambient Occlusion, In Proceedings of Short paper at Eurographics, 2011.

BibTex 

@inproceedings{bib:huang:2011,
    author       = { Huang, Jing and Boubekeur, Tamy and Ritschel, Tobias and Hollaender, Matthias and Eisemann, Elmar },    
    title        = { Separable Approximation of Ambient Occlusion },
    booktitle    = { In Proceedings of Short paper at Eurographics },
    year         = { 2011 },
    pubmedid     = { 20467054 },
    dblp         = { conf/eurographics/HuangBRHE11 },
    url          = { https://publications.graphics.tudelft.nl/papers/517 },
}