Last Updated: 10 / 23 / 2008

Siggraph 2008: Image-Space Horizon-Based Ambient Occlusion

The slides shown below are from the Siggraph 2008 presentation by Louis Bavoil & Miguel Sainz of NVIDIA on HBAO, an innovative improved form of screen-space ambient occlusion (SSAO).

A French version of this presentation is also available.

©2008 NVIDIA Corporation. All rights reserved.
NVIDIA, GeForce, Quadro, Tesla, CUDA, SLI, PureVideo,
and their respective logos are trademarks and/or
registered trademarks of NVIDIA Corporation.

Prefer a printable copy? Click here for a PDF of the presentation slides.

Want to learn more?

References cited in this presentation:

[Max 86] MAX, N. L. 1986. “Horizon mapping: Shadows for bump-mapped surfaces.” In Proceedings of Computer Graphics Tokyo ’86 on Advanced Computer Graphics.
[Zhukov et al. 98] Sergej Zhukov, Andrej Inoes, Grigorij Kronin, 1998. “An ambient light illumination model.” In Rendering Techniques ’98, G. Drettakis and N. Max, Eds., Eurographics, 45–56.
[Landis 02] Landis, 2002. “Production-Ready Global Illumination,” In ACM SIGGRAPH Course #16.
[Christensen 03] Christensen, P. H. 2003. “Global illumination and all that”. In ACM SIGGRAPH Course 9.
[Eisemann and Durand 04] Elmar Eisemann and Frédo Durand, “Flash Photography Enhancement via Intrinsic Relighting”, ACM SIGGRAPH 2004.
[Petschnigg et al. 04] Petschnigg, Szeliski, Agrawala, Cohen, Hoppe, Toyama, “Digital photography with flash and no-flash image pairs.” ACM SIGGRAPH 2004.
[Schüler 05] Christian Schüler, 2005. “Eliminate surface acne with gradient shadow mapping”, ShaderX4: Advanced Rendering Techniques.
[Gelato] Gritz, L. 2006. “Gelato 2.1 Technical Reference”. NVIDIA.
[Mental Ray] “mental ray Shader Reference”, November 2007.
[Mittring 07] MITTRING, M. 2007. “Finding next gen: Cry Engine 2”. In SIGGRAPH ’07: ACM SIGGRAPH 2007 courses.
[Shanmugam and Orikan 07] SHANMUGAM, P., AND ARIKAN, O. 2007. “Hardware accelerated ambient occlusion techniques on GPUs”. In I3D ’07: Proceedings of the 2007 symposium on Interactive 3D graphics and games.
[Kopf et al. 07] Johannes Kopf, Michael F. Cohen, Dani Lischinski, Matt Uyttendaele, “Joint Bilateral Upsampling”, SIGGRAPH '07: ACM SIGGRAPH 2007 papers.
[Fox and Compton 08] Megan Fox and Stuart Compton, “Ambient Occlusive Crease Shading”, Game Developer Magazine, March 2008.