Jaroslav Křivánek

Assistant Professor
Faculty of Mathematics and Physics
Charles University, Prague

Links:

KSVI, MFF UK, office 302
Malostanské náměstí 25
118 00 Praha 1
Czech Republic

phone: +420 221 914 214
jaroslav.krivanek@mff.cuni.cz
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I am an Assistant Professor in Computer Graphics at the Faculty of Mathematics and Physics, Charles University Prague. Prior to this appointment, I was a Marie Curie postdoctoral research fellow at Cornell University, working with prof. Kavita Bala. In my computer graphics research I focus on realistic, physically-based rendering, visual pereception, and appearance modeling.

Announcement

Diego Gutierrez and Wojciech Jarosz will be the guest editors for an IEEE CG&A Special issue on "Scattering: Acquisition, Modeling, and Rendering". Submission deadline is August 25th, 2012. For details see the call for papers.


Teaching

Master & Bachelor thesis topics for 2011/2012 (in Czech)

Courses taught and organized in 2011/12:

Courses taught and organized in 2010/11:


Student Supervision

I have the privilege to work with the following Ph.D. students: Jan Beneš, Ondřej Karlík, Jiří Vorba.

Václav Gassenbauer (co-supervised by prof. Kadi Bouatouch) defended his thesis on 12/12/2011.

In addition, I have supervised a number of Master and Bachelor theses.


Professional activities


Publications

2012

Iliyan Georgiev, Jaroslav Křivánek, Stefan Popov, and Philipp Slusallek
Importance Caching for Complex Illumination
Computer Graphics Forum (EUROGRAPHICS 2012), vol. 31, no. 2, 2012.
BibTeX  |  paper (52MB pdf)

2011

Iliyan Georgiev, Jaroslav Křivánek, and Philipp Slusallek
Bidirectional Light Transport with Vertex Merging
SIGGRAPH Asia 2011, technical sketch.
DOI  |  BibTeX  |  paper (4MB pdf)  |  supplemental doc (6MB pdf)

Václav Gassenbauer, Jaroslav Křivánek, Kadi Bouatouch, Christian Bouville, and Mickaël Ribardiere
Improving Performance and Accuracy of Local PCA
Computer Graphics Forum (Pacific Graphics), vol. 30, no. 7, 2011.
DOI |  BibTeX |  Paper (3.8MB pdf) |  Slides (2MB pptx, 0.7MB pdf) |  Video (1.4MB avi)

Jiří Vorba, supervised by Jaroslav Křivánek
Bidirectional Photon Mapping
CESCG 2011 (won Best Paper Award and 2nd Best Presentation Award)
paper (2.2MB pdf)  |  slides (2.5MB pptx)

2010

Tomáš Davidovič, Jaroslav Křivánek, Miloš Hašan, Philipp Slusallek, and Kavita Bala
Combining Global and Local Virtual Lights for Detailed Glossy Illumination
ACM Trans. Graph. (SIGGRAPH Asia 2010), vol. 29, no. 6., 2011.
DOI  |  BibTeX  |  paper (9MB pdf)  |  supplementary document (6MB pdf)  |  annotated slides (13MB pptx)

Jaroslav Křivánek, James A. Ferwerda, and Kavita Bala
Effects of Global Illumination Approximations on Material Appearance
ACM Trans. Graph. (SIGGRAPH 2010), vol. 29, no. 4., 2010.
DOI  |  BibTeX  |  Project page  |  paper: 26MB pdf, 1.8MB pdf

Jaroslav Křivánek, Marcos Fajardo, Per H. Christensen, Eric Tabellion, Michael Bunnell, David Larsson, and Anton Kaplanyan
Global Illumination Across Industries
SIGGRAPH 2010 Course.
BibTeX  |  Course page

Murat Kurt, László Szirmay-Kalos, and Jaroslav Křivánek
An Anisotropic BRDF Model for Fitting and Monte Carlo Rendering
ACM SIGGRAPH Computer Graphics, vol. 44, no. 1., 2010.
DOI  |  BibTeX  |  on-line version  |  paper (PDF)  |  video (DivX, 20MB)

2009

Jaroslav Křivánek and Pascal Gautron
Practical Global Illumination with Irradiance Caching
Morgan and Claypool Publishers, March 2009.
DOI  |  BibTeX  |  book at Morgan & Claypool  |  book at Amazon

Miloš Hašan, Jaroslav Křivánek, Bruce Walter, and Kavita Bala
Virtual Spherical Lights for Many-Light Rendering of Glossy Scenes
ACM Trans. Graph. (SIGGRAPH Asia '09), vol. 28, no. 5., 2009.
DOI  |  BibTeX  |  paper  |  auxiliary images  |  VSL shader (HLSL)  |  Talk slides: PPTX, PDF, PDF with annotations

Václav Gassenbauer, Jaroslav Křivánek, and Kadi Bouatouch
Spatial Directional Radiance Caching
Computer Graphics Forum (Proc. of Eurographics Symposium on Rendering ’09), vol. 28, no. 4. 2009.
DOI  |  BibTeX  |  paper  |  video  |  slides

Peter Krištof, Bedřich Beneš, Jaroslav Křivánek, and Ondřej Šťava
Hydraulic Erosion Using Smoothed Particle Hydrodynamics
Computer Graphics Forum (Proc. of EUROGRAPHICS ’09), vol. 28, no. 2. 2009.
DOI  |  BibTeX  |  paper  |  video

Mark Colbert and Jaroslav Křivánek
Real-time dynamic shadows for image-based lighting
Chapter in ShaderX7 - Advanced Rendering Techniques. Charles River Media, 2009.
Note: This book chapter gives the implementation details for the shadow technique described in the "Filtered Importance Sampling" paper (EGSR'08)
BibTeX

Ondřej Šťava, Bedřich Beneš, and Jaroslav Křivánek
Interactive hydraulic erosion on the GPU
Chapter in ShaderX7 - Advanced Rendering Techniques. Charles River Media, 2009.
Note: this book chapter gives the implementation details for our SCA'08 paper
BibTeX

2008

Ondřej Šťava, Bedřich Beneš, Matthew Brisbin, and Jaroslav Křivánek
Interactive Terrain Modeling Using Hydraulic Erosion
SCA '08: ACM SIGGRAPH/Eurographics Symposium on Computer Animation, 2008.
ACM DL  |  BibTeX  |  Paper  |  Video

Jaroslav Křivánek and Mark Colbert
Real-time Shading with Filtered Importance Sampling
Computer Graphics Forum (Proc. of Eurographics Symposium on Rendering), vol. 27, no. 4. 2008.
DOI  |  BibTeX  |  Paper  |  Video  |  Slides

Juraj Obert, Jaroslav Křivánek, Fabio Pellacini, Daniel Sýkora, and Sumanta Pattanaik
iCheat: A Representation for Artistic Control of Indirect Cinematic Lighting
Computer Graphics Forum (Proc. of Eurographics Symposium on Rendering), vol. 27, no. 4. 2008.
DOI  |  BibTeX  |  Paper  |  Video 1  |  Video 2  |  Slides

Jaroslav Křivánek, Pascal Gautron, Greg Ward, Henrik Wann Jensen, Eric Tabellion, and Per H. Christensen
Practical Global Illumination With Irradiance Caching
ACM SIGGRAPH '08 Class, Los Angeles, August 2008
DOI  |  BibTeX  |  Class page

2007

Jaroslav Křivánek and Sumanta Pattanaik
Lighting
The Wiley Encyclopedia of Computer Science and Computer Engineering, December 2007
DOI  |  BibTeX

Juraj Obert, Jaroslav Křivánek, Daniel Sýkora, and Sumanta Pattanaik
Interactive Light Transport Editing for Flexible Global Illumination
ACM SIGGRAPH '07, Sketches and Applications, 2007
DOI  |  BibTeX  |  Sketch  |  Video  |  Slides

Mark Colbert and Jaroslav Křivánek
Real-time Shading with Filtered Importance Sampling
ACM SIGGRAPH '07, Sketches and Applications, 2007
DOI  |  BibTeX  |  Sketch  |  Supplement  |  Video  |  Slides  |  Project page

Jaroslav Křivánek, Pascal Gautron, Greg Ward, Okan Arikan, and Henrik Wann Jensen
Practical Global Illumination With Irradiance Caching
ACM SIGGRAPH '07 Course 16, San Diego, August 2007
DOI  |  BibTeX  |  Course page

Mark Colbert and Jaroslav Křivánek
GPU-based Importance Sampling.
Chapter 20 in GPU Gems 3. Addison-Wesley Professional. 2007.
BibTeX  |  Online version  |  Project page

2006

Jaroslav Křivánek, Kadi Bouatouch, Sumanta Pattanaik, and Jiří Žára
Making Radiance and Irradiance Caching Practical: Adaptive Caching and Neighbor Clamping
In Rendering Techniques, Proceedings Eurographics Symposium on Rendering, June 2006. 
Note: The paper is a slightly modified version of Chapter 6 of my dissertation.
BibTeX  |  Paper  |  Slides (ZIP)

Jaroslav Křivánek, Jaakko Konttinen, Sumanta Pattanaik, Kadi Bouatouch, and Jiří Žára
Fast Approximation to Spherical Harmonic Rotation
SCCG '06: Proceedings of the 22nd spring conference on Computer graphics
Note: The performance of the DirectX rotation code given in this paper was measured on the October 2004 release. DirectX has recently got a much faster spherical harmonics rotation code. Presentation of my SH-rotation siggraph sketch has the updated timings (here is the sketch itself).
BibTeX entry  |  Paper  |  Slides (PPT)

Mark Colbert, Sumanta Pattanaik, and Jaroslav Křivánek
BRDF-Shop: An artistic tool for creating physically correct bidirectional reflectance distribution functions
IEEE Computer Graphics and Applications, Vol. 26, No. 1, January/February 2006.
DOI  |  BibTeX  |  Project page  |  Paper

2005

Jaroslav Křivánek
Radiance Caching for Global Illumination Computation on Glossy Surfaces
PhD Thesis, Université de Rennes 1 and Czech Technical University in Prague, December 2005.
BibTeX  |  Thesis page  |  Thesis (PDF)  |  Defence Talk Slides (PPT)  |  References (BIB)

Jaroslav Křivánek, Jaakko Konttinen, Sumanta Pattanaik, and Kadi Bouatouch
Fast Approximation to Spherical Harmonic Rotation (Technical report)
Technical report no. 1728. IRISA, Rennes, France. July 2005.
INRIA  |  BibTeX  |  Report (PDF)  |  References (BIB)

Pascal Gautron, Jaroslav Křivánek, Kadi Bouatouch, and Sumanta Pattanaik
Radiance Cache Splatting: A GPU-Friendly Global Illumination Algorithm
In Siggraph 2005 Sketches and Applications, August 2005.
Note: This is a condensed version of our EGSR 2005 paper of the same name.
DOI  |  BibTeX  |  Project page  |  Paper  |  Slides (PPT)

Pascal Gautron, Jaroslav Křivánek, Kadi Bouatouch, and Sumanta Pattanaik
Radiance Cache Splatting: A GPU-Friendly Global Illumination Algorithm
In Proceedings of Eurographics Symposium on Rendering, p. 55-64. June 2005.
BibTeX  |  Project page  |  Paper  |  Slides  |  References (BIB)

Jaroslav Křivánek, Pascal Gautron, Kadi Bouatouch, and Sumanta Pattanaik
Improved Radiance Gradient Computation
In Spring Conference on Computer Graphics, SCCG 2005.
DOI  |  BibTeX  |  Paper  |  Slides (PPT)  |  References (BIB)

Jaroslav Křivánek,  Pascal GautronSumanta Pattanaik, and Kadi Bouatouch
Radiance Caching for Efficient Global Illumination Computation
IEEE Transactions on Visualization and Computer Graphics , Vol. 11, No. 5, September/October 2005
© 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
DOI  |  BibTeX  |  Project page  |  Paper

2004

Jaroslav Křivánek, Pascal Gautron, Sumanta Pattanaik, and Kadi Bouatouch
Radiance Caching for Efficient Global Illumination Computation (Technical report)
Technical Report no. 1623. IRISA, Rennes, France. June 2004.
INRIA  |  BibTeX  |  Project page  |  Report

Pascal Gautron , Jaroslav Křivánek, Sumanta Pattanaik, Kadi Bouatouch
A Novel Hemispherical Basis for Accurate and Efficient Rendering
In Eurographics Symposium on Rendering, EGSR 2004.
BibTeX  |  Paper  |  Slides  |  Video  |  References (BIB)

Jaroslav Křivánek, Sumanta Pattanaik, Jiří Žára
Adaptive Mesh Subdivision for Precomputed Radiance Transfer
In Spring Conference on Computer Graphics, SCCG 2004.
DOI  |  BibTeX  |  Paper  |  Slides  |  References (BIB)

Jaroslav Křivánek and Jiří Žára
Radiance Caching for Fast Global Illumination with Arbitrary BRDFs
In Workshop 2004, CTU Prague.
Paper

2003

Jaroslav Křivánek, Jiří Žára, and Bouatouch Kadi
Fast Depth-of-Field Rendering with Surface Splatting
In Computer Graphics International, CGI '03.
DOI  |  BibTeX  |  Project page  |  Paper  |  Slides  |  References (BIB)

Jaroslav Křivánek and Jiří Žára
Rendering Depth-of-Field with Surface Splatting
Technical Report, CTU Prague.
BibTeX  |  Project page  |  Report  |  References (BIB)

Jaroslav Křivánek
Representing and Rendering Surfaces With Points
Postgraduate Study Report, CTU Prague.
BibTeX  |  Project page  |  Report  |  References (BIB)

Jaroslav Křivánek
Depth-of-Field Rendering for Point-Based Objects
In Workshop 2003, CTU Prague.
BibTeX  |  Project page  |  Paper  |  Poster

2002

Jaroslav Křivánek
Perceptually Driven Point Sample Rendering
In Workshop 2002, CTU Prague.
BibTeX  |  Project page  |  Paper  |  Poster

Jaroslav Křivánek, Pavel Slavík
Virtual Reconstruction of Celtic Oppidum Zavist Near Prague
In Spring Conference on Computer Graphics, SCCG 2002, Posters.
BibTeX  |  Paper (HTML)

2001

Jaroslav Křivánek
GeForce3: Hopefully not a Flaming Expectation (in Czech)
Chip, 2001.
BibTeX  |  Article (PDF)

Jaroslav Křivánek
New Technologies as Presented by ATI (in Czech)
Chip, 2001.
BibTeX  |  Article (PDF)

Jaroslav Křivánek
Using Photon Maps and Irradiance Cache in Photorealistic Image Synthesis
Poster 2001, CTU Prague.
BibTeX  |  Paper  |  Poster

Jiří Žára, Jaroslav Křivánek
Graphics Performance Benchmarking Based on VRML Browsers
Virtual Reality International Conference, VRIC 2001.
BibTeX  |  Paper


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