Email

first dot last (at)

aalto dot fi


jlehtinen (at)

nvidia dot com


Twitter

jaakkolehtinen


Addresses

Otaniementie 17, room 3543

Dept. of Computer Science

Aalto University

FI-02150 Espoo

Finland


NVIDIA Helsinki

Porkkalankatu 1

FI-00180 Helsinki

Finland


Links

NVIDIA Research




Jaakko Lehtinen

Associate Professor, Dept. of Computer Science, Aalto University

Senior Research Scientist, NVIDIA Research





Short Bio

I am a tenured associate professor at Aalto University, and a research scientist at NVIDIA Research. Prior to that, I did a postdoc with Frédo Durand at MIT in Boston. I work mostly on realistic image synthesis, but my interests span most areas in graphics, including hardware architectures, modeling, mathematics, and appearance acquisition.

I obtained my doctorate in 2007 from Helsinki University of Technology (now Aalto University), working together with Timo Aila, Janne Kontkanen and Samuli Laine under Lauri Savioja.

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 the worldwide blockbuster hit games Max Payne, Max Payne 2, and Alan Wake.

In my free time, I enjoy rock climbing, photography, cooking, and music (e.g. singing).

Here's a copy of my CV.


Students, Collaborators, Funding

Miika Aittala, Markus Kettunen, Ari Silvennoinen

Timo Aila, Samuli Laine, Tero Karras, Frédo Durand, Tim Weyrich, Jonathan Ragan-Kelley, Ilya Baran, Jiawen Chen, Matthias Zwicker, Marco Manzi, Fabrice Rousselle.

My research is supported by Academy of Finland (grant# 277833), Helsinki Doctoral Education Network in Information and Communications Technology (HICT), Aalto Media Factory, Aalto University, and NVIDIA Corporation.


Teaching

Aalto ME-C3100 Computer Graphics

Aalto ME-E4100 Advanced Computer Graphics

MIT 6.837 Computer Graphics, Fall 09

I had the honor to be elected Teacher of the Year 2013 in the Computer Science Degree Program at Aalto. Also, my advanced graphics class won Best Computer Science Class in 2013 and 2014 based on student feedback.


See notes for prospective M.Sc. and B.Sc. thesis students.


Professional Activities

Editorial board member in ACM Transactions on Graphics and Journal of Computer Graphics Techniques.

Papers chair for EGSR 2015 (w/ Derek Nowrouzezahrai), HPG 2013 (w/ K. Fatahalian and C. Theobalt)

Program Committee Member for SIGGRAPH 2016, SIGGRAPH 2014, Eurographics 2013, SIGGRAPH 2012, SIGGRAPH 2011, I3D 2012, Eurographics 2010, Eurographics Symposium on Rendering 2010, 2011, 2012, etc., etc.


Refereed Publications (Google Scholar)

Miika Aittala, Timo Aila, and Jaakko Lehtinen 2016. Reflectance Modeling by Neural Texture Synthesis. ACM Transactions on Graphics (Proc. SIGGRAPH 2016), to appear.

[Project page]


Tzu-Mao Li, Jaakko Lehtinen, Ravi Ramamoorthi, Wenzel Jakob, and Fredo Durand 2015. Anisotropic Gaussian Mutations for Metropolis Light Transport through Hessian-Hamiltonian Dynamics. ACM Transactions on Graphics (Proc. SIGGRAPH Asia 2015), to appear.

[Project page]


Marco Manzi, Markus Kettunen, Miika Aittala, Jaakko Lehtinen, Fredo Durand, and Matthias Zwicker 2015. Gradient-Domain Bidirectional Path Tracing. In Proc. Eurographics Symposium on Rendering 2015 (Experimental Ideas & Implementations).

[Project page]


Markus Kettunen, Marco Manzi, Miika Aittala, Jaakko Lehtinen, Fredo Durand, and Matthias Zwicker 2015. Gradient-Domain Path Tracing. ACM Transactions on Graphics (Proc. SIGGRAPH 2015), to appear.

[Project page] [ACM Portal (Open Access)]


Miika Aittala, Tim Weyrich, and Jaakko Lehtinen 2015. Two-shot SVBRDF Capture for Stationary Materials. ACM Transactions on Graphics (Proc. SIGGRAPH 2015), to appear.

[Project page]


Marco Manzi, Fabrice Rousselle, Markus Kettunen, Jaakko Lehtinen, and Matthias Zwicker 2014. Improved Sampling for Gradient-Domain Metropolis Light Transport. ACM Transactions on Graphics 33(6) (Proc. SIGGRAPH Asia 2014).

[Project page] [DOI (Open Access)]


Perttu Hämäläinen, Sebastian Eriksson, Esa Tanskanen, Ville Kyrki, and Jaakko Lehtinen 2014. Online Motion Synthesis Using Sequential Monte Carlo. ACM Transactions on Graphics 33(4) (Proc. SIGGRAPH 2014).

[Project page] [DOI]


Ari Silvennoinen, Hannu Saransaari, Samuli Laine, and Jaakko Lehtinen 2014. Occluder Simplification Using Planar Sections. Computer Graphics Forum 33(1).

[Project page] [DOI]


Jaakko Lehtinen, Tero Karras, Samuli Laine, Miika Aittala, Frédo Durand, and Timo Aila 2013. Gradient-Domain Metropolis Light Transport. ACM Transactions on Graphics 32(4) (Proc. SIGGRAPH 2013).

[Project page][ACM Portal]


Miika Aittala, Tim Weyrich, and Jaakko Lehtinen 2013. Practical SVBRDF Capture in the Frequency Domain. ACM Transactions on Graphics 32(4) (Proc. SIGGRAPH 2013).

[Project page] [ACM Portal]


Jaakko Lehtinen, Timo Aila, Samuli Laine, and Frédo Durand 2012. Reconstructing the Indirect Light Field for Global Illumination. ACM Transactions on Graphics 31(4) (Proc. SIGGRAPH 2012)

[Project page]


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). Presented at SIGGRAPH 2011.

[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. Presented at SIGGRAPH 2008.

[PDF through ACM Author-izer]


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.