Bent normals and cones in screen-space

Oliver Klehm, Tobias Ritschel, Elmar Eisemann, Hans-Peter Seidel
Vision, Modeling and Visualization Workshop - 2011
Download the publication : SS_Bent_Cones_Klehm11.pdf [15.5Mo]   SS_Bent_Cones_VMV2011_talk_Klehm.pptx [0Ko]  
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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BibTex references

@InProceedings { KRES11a,
  author       = "Klehm, Oliver and Ritschel, Tobias and Eisemann, Elmar and Seidel, Hans-Peter",
  title        = "Bent normals and cones in screen-space",
  booktitle    = "Vision, Modeling and Visualization Workshop",
  year         = "2011",
  url          = ""

Other publications in the database

» Oliver Klehm
» Tobias Ritschel
» Elmar Eisemann
» Hans-Peter Seidel