Abstract
While realistic illumination significantly improves the visual quality and perception of rendered images, it is often very expensive to compute. In this paper, we propose a new algorithm for embedding a global ambient occlusion computation within the fast sweeping algorithm while determining isosurfaces. With this method we can approximate ambient occlusion for rendering volumetric data with minimal additional cost over fast sweeping. We compare visualizations rendered with our algorithm to visualizations computed with only local shading, and with a ambient occlusion calculation using Monte Carlo sampling method. We also show how this method can be used for approximating low frequency shadows and subsurface scattering.
Access provided by Autonomous University of Puebla. Download to read the full chapter text
Chapter PDF
Similar content being viewed by others
Keywords
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
References
Qiu, F., Xu, F., Fan, Z., Neophytos, N.: Lattice-based volumetric global illumination. IEEE Transactions on Visualization and Computer Graphics 13, 1576–1583 (2007)
Stewart, A.J.: Vicinity shading for enhanced perception of volumetric data. IEEE Visualization (2003)
Tarini, M., Cignoni, P., Montani, C.: Ambient occlusion and edge cueing for enhancing real time molecular visualization. IEEE Transactions on Visualization and Computer Graphics 12, 1237–1244 (2006)
Weigle, C., Banks, D.: A comparison of the perceptual benefits of linear perspective and physically-based illumination for display of dense 3d streamtubes. IEEE Transactions on Visualization and Computer Graphics 14, 1723–1730 (2008)
Zhao, H.: A fast sweeping method for eikonal equations. Mathematics of Computation 74, 603–627 (2005)
Sethian, J.A.: A fast marching level set method for monotonically advancing fronts. Proc. Nat. Acad. Sci., 1591–1595 (1996)
Zhukov, S., Inoes, A., Kronin, G.: An ambient light illumination model. In: Drettakis, G., Max, N. (eds.) Rendering Techniques 1998. Eurographics, pp. 45–56. Springer, Wien (1998)
Pharr, M., Green, S.: Ambient Occlusion. In: GPU Gems, pp. 667–692. Addison-Wesley, Reading (2004)
Sattler, M., Sarlette, R., Zachmann, G., Klein, R.: Hardware-accelerated ambient occlusion computation. In: 9th Int’l Fall Workshop Vision, Modeling, And Visualization (VMV), Stanford, California, pp. 119–135 (2004)
Sloan, P.P., Kautz, J., Snyder, J.: Precomputed radiance transfer for real-time rendering in dynamic, low-frequency lighting environments. ACM Trans. Graph. 21, 527–536 (2002)
Mei, C., Shi, J., Wu, F.: Rendering with spherical radiance transport maps. Computer Graphics Forum 23, 281–290 (2004)
Kontkanen, J., Laine, S.: Ambient occlusion fields. In: Proceedings of ACM SIGGRAPH 2005 Symposium on Interactive 3D Graphics and Games, pp. 41–48. ACM Press, New York (2005)
Malmer, M., Malmer, F., Assarsson, U., Holzschuch, N.: Fast precomputed ambient occlusion for proximity shadows. Journal of Graphics Tools 12, 59–71 (2007)
Bunnell, M.: Dynamic Ambient Occlusion and Indirect Lighting. In: GPU Gems 2, Pearson Education, Inc, London (2005)
Shanmugam, P., Arikan, O.: Hardware accelerated ambient occlusion techniques on gpus. In: I3D 2007: Proceedings of the 2007 symposium on Interactive 3D graphics and games, pp. 73–80. ACM, New York (2007)
Ritschel, T., Grosch, T., Seidel, H.-P.: Approximating dynamic global illumination in image space. In: I3D 2009: Proceedings of the 2009 symposium on Interactive 3D graphics and games, pp. 75–82. ACM, New York (2009)
Salama, C.R.: Gpu-based monte-carlo volume raycasting. In: PG 2007: Proceedings of the 15th Pacific Conference on Computer Graphics and Applications, Washington, DC, USA, pp. 411–414. IEEE Computer Society, Los Alamitos (2007)
Tarini, M., Cignoni, P., Montani, C.: Ambient occlusion and edge cueing to enhance real time molecular visualization (2006)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2009 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Singh, M., Yuksel, C., House, D. (2009). Fast Occlusion Sweeping. In: Bebis, G., et al. Advances in Visual Computing. ISVC 2009. Lecture Notes in Computer Science, vol 5875. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-10331-5_16
Download citation
DOI: https://doi.org/10.1007/978-3-642-10331-5_16
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-10330-8
Online ISBN: 978-3-642-10331-5
eBook Packages: Computer ScienceComputer Science (R0)