Computer Graphics Group

The Computer Graphics Group is a research group within Telecommunications Software and Multimedia Laboratory at Helsinki University of Technology.

The group focuses on developing efficient rendering algorithms. Particular areas of interest include illumination techniques, shadow generation, and methods for describing reflective properties of materials.

Our SIGGRAPH 2005 Proceedings Cover Image

People

Supervising Professor	Lauri Savioja
Doctoral Students
MSc Students
Alumni	Timo Aila	NVIDIA Research
	Janne Kontkanen	PDI/DreamWorks
	Samuli Laine	NVIDIA Research
	Jaakko Lehtinen	Massachusetts Institute of Technology
	Esa Nuuros
	Hannu Saransaari
	Ari Silvennoinen	Umbra Software

Publications

2008

Jaakko Lehtinen, Matthias Zwicker, Emmanuel Turquin, Janne Kontkanen, Frédo Durand, François Sillion, and Timo Aila. A Meshless Hierarchical Representation for Light Transport. Conditionally accepted to ACM Transactions on Graphics (SIGGRAPH 2008).

2007

Jaakko Lehtinen. A Framework for Precomputed and Captured Light Transport. ACM Transactions on Graphics 26(4), pp. 13:1-13:22.
Samuli Laine, Hannu Saransaari, Janne Kontkanen, Jaakko Lehtinen, and Timo Aila. Incremental Instant Radiosity for Real-Time Indirect Illumination. In Rendering Techniques 2007 (Proc. Eurographics Symposium on Rendering), pp. 277-286.

2006

Janne Kontkanen and Timo Aila. Ambient Occlusion for Animated Characters. Accepted to Eurographics Symposium on Rendering 2006
Janne Kontkanen, Emmanuel Turquin, Nicolas Holzschuch, and François Sillion. Wavelet Radiance Transport for Interactive Indirect Lighting. Accepted to Eurographics Symposium on Rendering 2006
Jaakko Lehtinen, Samuli Laine and Timo Aila. An Improved Physically-Based Soft Shadow Volume Algorithm. Accepted to Eurographics 2006.
Samuli Laine and Timo Aila. A Weighted Error Metric and Optimization Method for Antialiasing Patterns. Computer Graphics Forum 25(1), 83-94, 2006.
Janne Kontkanen and Samuli Laine. Sampling Precomputed Volumetric Lighting. To appear in Journal of Graphics Tools.

2005

Samuli Laine, Timo Aila, Ulf Assarsson, Jaakko Lehtinen, and Tomas Akenine-Möller. Soft Shadow Volumes for Ray Tracing. ACM Transactions on Graphics 24(3) (SIGGRAPH 2005).
Samuli Laine and Timo Aila. Hierarchical Penumbra Casting. Computer Graphics Forum 24(3) (Eurographics 2005), 313-322.
Jon Hasselgren and Tomas Akenine-Möller and Samuli Laine. A Family of Inexpensive Sampling Schemes. Computer Graphics Forum 24(4), 843-848, 2005.
Samuli Laine. Split-Plane Shadow Volumes. Proceedings of Graphics Hardware, 23-32, 2005.
Janne Kontkanen, Jussi Räsänen, and Alexander Keller. Irradiance Filtering for Monte Carlo Ray Tracing Accepted to proceedings of MC2QMC 2004 (published in 2005)
Tomas Akenine-Möller and Timo Aila. Conservative and Tiled Rasterization Using a Modified Triangle Setup. Journal of graphics tools 10(3), 1-8, 2005
Janne Kontkanen and Samuli Laine. Ambient Occlusion Fields. Proceedings of ACM SIGGRAPH 2005 Symposium on Interactive 3D Graphics and Games, 41-48, 2005.
Samuli Laine. A General Algorithm for Output-Sensitive Visibility Preprocessing. Proceedings of ACM SIGGRAPH 2005 Symposium on Interactive 3D Graphics and Games, 31-39, 2005.

2004

Timo Aila and Tomas Akenine-Möller. A Hierarchical Shadow Volume Algorithm. Proceedings of Graphics Hardware, 15-23, 2004.
Jan Kautz, Jaakko Lehtinen, and Timo Aila. Hemispherical Rasterization for Self-Shadowing of Dynamic Objects. Proceedings of Eurographics Symposium on Rendering, 161-166, 2004.
Timo Aila and Samuli Laine. Alias-free Shadow Maps. Proceedings of Eurographics Symposium on Rendering, 179-184, 2004.
Matthias Zwicker, Jussi Räsänen, Mario Botsch, Carsten Dachsbacher, and Mark Pauly. Perspective Accurate Splatting. Proceedings of Graphics Interface 2004.
Timo Aila and Ville Miettinen. dPVS: An Occlusion Culling System for Massive Dynamic Environments. IEEE Computer Graphics and Applications 24(2), 86-97, 2004.

2003

Jukka Arvo and Timo Aila. Optimized Shadow Mapping Using the Stencil Buffer. Journal of graphics tools, 8(3), 23-32, 2003.
Timo Aila, Ville Miettinen, and Petri Nordlund. Delay Streams for Graphics Hardware. ACM Transactions on Graphics 22(3) (SIGGRAPH 2003), 792-800.
Jaakko Lehtinen and Jan Kautz. Matrix Radiance Transfer. Proceedings of ACM SIGGRAPH 2003 Symposium on Interactive 3D Graphics, 59-64, 2003.

Computer Graphics Group

People

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