Contact Information

jaakko (at)

csail dot mit dot edu

NVIDIA Helsinki

Urho Kekkosen katu 3b

FI-00100 Helsinki

Finland

Links

NVIDIA Research
flickr

Remedy

About

I currently work as a research scientist at NVIDIA Research. Prior to that, I was a postdoc with Frédo Durand at MIT CSAIL. I work mostly on realistic image synthesis, but my interests span most areas in graphics, including hardware architectures, modeling, image processing, and mathematics.

I obtained my doctorate in 2007 from Helsinki University of Technology, where I worked with Timo Aila, Janne Kontkanen and Samuli Laine.

In addition to research, I also consult for the game developer Remedy Entertainment, where I worked 1996-2005 as a graphics programmer and contributed significantly to the graphics technology behind Max Payne, Max Payne 2 and Alan Wake.

Teaching

6.837 Computer Graphics, Fall 09

Recent Professional Activities

Program Committee Member for

1. • SIGGRAPH 2012
   

2. • SIGGRAPH 2011
   

3. • I3D 2012
   

4. • Eurographics 2010
   

5. • Eurographics Symposium on Rendering 2010, 2011
   

Refereed Publications

Jaakko Lehtinen, Timo Aila, Jiawen Chen, Samuli Laine, and Frédo Durand 2011. Temporal Light Field Reconstruction for Rendering Distribution Effects. ACM Transactions on Graphics 30(4) (Proc. SIGGRAPH 2011).

[Project page]

Samuli Laine, Timo Aila, Tero Karras and Jaakko Lehtinen 2011. Clipless Dual-Space Bounds for Faster Stochastic Rasterization. ACM Transactions on Graphics 30(4) (Proc. SIGGRAPH 2011).

[PDF]

Jonathan Ragan-Kelley, Jaakko Lehtinen, Jiawen Chen, Michael Doggett, and Frédo Durand 2011. Decoupled Sampling for Real-Time Graphics Pipelines. ACM Transactions on Graphics 30(3).

[Project page]

Ilya Baran, Jiawen Chen, Jonathan Ragan-Kelley, Frédo Durand, and Jaakko Lehtinen 2010. A Hierarchical Volumetric Shadow Algorithm for Single Scattering. ACM Transactions on Graphics 29(6) (Proc. SIGGRAPH Asia 2010).

[Project page]

Ilya Baran, Jaakko Lehtinen, and Jovan Popović 2010. Sketching Clothoid Splines Using Shortest Paths. Computer Graphics Forum 29(2) (Proc. Eurographics 2010)

[Project page]

Jaakko Lehtinen, Matthias Zwicker, Emmanuel Turquin, Janne Kontkanen, Frédo Durand, François Sillion, and Timo Aila. A Meshless Hierarchical Representation for Light Transport. ACM Transactions on Graphics 27(3) (Proc. SIGGRAPH 2008).

[Project page]

Samuli Laine, Hannu Saransaari, Janne Kontkanen, Jaakko Lehtinen, and Timo Aila 2007. Incremental Instant Radiosity for Real-Time Indirect Illumination. In Rendering Techniques 2007 (Proc. Eurographics Symposium on Rendering), pp. 277-286.

[PDF]

Jaakko Lehtinen 2007. A Framework for Precomputed and Captured Light Transport. ACM Transactions on Graphics 26(4), pp. 13:1-13:22.

[ACM Portal]

Jaakko Lehtinen, Samuli Laine, and Timo Aila 2006. An Improved Physically-Based Soft Shadow Volume Algorithm. Computer Graphics Forum 25(3) (Proc. Eurographics 2006).

[PDF]

Samuli Laine, Timo Aila, Ulf Assarsson, Jaakko Lehtinen, and Tomas Akenine-Möller 2005. Soft Shadow Volumes for Ray Tracing. ACM Transactions on Graphics 24(3) (Proc. SIGGRAPH 2005).
See our EG 2006 paper for improvements.

[PDF]

Jan Kautz, Jaakko Lehtinen, and Timo Aila 2004. Hemispherical Rasterization for Self-Shadowing of Dynamic Objects. In Rendering Techniques 2004 (Proc. Eurographics Symposium on Rendering), pp. 179-184.

[PDF]

Jaakko Lehtinen and Jan Kautz 2003. Matrix Radiance Transfer. In proc. ACM SIGGRAPH 2003 Symposium on Interactive 3D Graphics, pp. 59-64.

[PDF]

Theses

Jaakko Lehtinen 2007. Theory and Algorithms for Efficient Physically-Based Illumination. Doctoral dissertation. Publications in Telecommunications Software and Multimedia TML-A20, Helsinki University of Technology.

[Official webpage]

Jaakko Lehtinen 2004. Foundations of Precomputed Radiance Transfer. Master's thesis, Helsinki University of Technology, September 2004.

[PDF]

Technical Reports and Book Chapters

Jaakko Lehtinen, Matthias Zwicker, Janne Kontkanen, Emmanuel Turquin, François Sillion, and Timo Aila 2007. Meshless Finite Elements for Hierarchical Global Illumination. Technical Report TML-B7, Publications in Telecommunications Software and Multimedia, Helsinki University of Technology.
[Project page]

Hannu Saransaari, Samuli Laine, Janne Kontkanen, Jaakko Lehtinen and Timo Aila. Incremental Instant Radiosity. In ShaderX 6 — Advanced Rendering Techniques, Wolfgang Engel, ed., pp. 381-392. CEngage Learning, 2008.