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Separable Approximation of Ambient Occlusion

Jing Huang, Tamy Boubekeur, Tobias Ritschel, Matthias Holländer and Elmar Eisemann
Eurographics 2011 - Short Papers



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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BibTex Reference:
       author = {Jing Huang and Tamy Boubekeur and Tobias Ritschel and Matthias Holländer and Elmar Eisemann},
       title = {Separable Approximation of Ambient Occlusion},
       booktitle ={Eurographics 2011 - Short papers},
       year = {2011},

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