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In Proceedings of Vision, Modeling, and Visualization

Bent Normals and Cones in Screen-space

Oliver Klehm, Tobias Ritschel, Elmar Eisemann, and Hans-Peter Seidel

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Ambient occlusion (AO) is a popular technique for real-time as well as offline rendering. One of its benefits is a gain in efficiency due to the fact that occlusion and shading are decoupled which results in an average occlusion that modulates the surface shading. Its main drawback is a loss of realism due to the lack of directional occlusion and lighting. As a solution, the use of bent normals was proposed for offline rendering. This work describes how to compute bent normals and bent cones in combination with screen-space ambient occlusion. These extensions combine the speed and simplicity of AO with physically more plausible lighting.

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Oliver Klehm, Tobias Ritschel, Elmar Eisemann, and Hans-Peter Seidel, Bent Normals and Cones in Screen-space, In Proceedings of Vision, Modeling, and Visualization, pp. 177–182, 2011.

BibTex 

@inproceedings{bib:klehm:2011,
    author       = { Klehm, Oliver and Ritschel, Tobias and Eisemann, Elmar and Seidel, Hans-Peter },    
    title        = { Bent Normals and Cones in Screen-space },
    booktitle    = { In Proceedings of Vision, Modeling, and Visualization },
    year         = { 2011 },
    pages        = { 177--182 },
    doi          = { 10.2312/PE/VMV/VMV11/177-182 },
    dblp         = { conf/vmv/KlehmRES11 },
    url          = { https://publications.graphics.tudelft.nl/papers/485 },
}