Petrik Clarberg
Ph.D. Student

I'm working for Intel Corporation since Dec 2008.
(the university e-mail is still valid)

Department of Computer Science
Lund University
Box 118
221 00 Lund
Sweden

e-mail: petrik (at) cs.lth.se

Biography

From August 2004 to March 2005, I was visiting the graphics lab at the UCSD for master's thesis research. I was working with Henrik Wann Jensen, Tomas Akenine-Möller, and Wojciech Jarosz. Our research on importance sampling using wavelets was published in a paper at SIGGRAPH 2005.

Since April 2005, I am a Ph.D. student in the graphics group at Lund University, Sweden, working with Tomas Akenine-Möller and the Ph.D. students Jacob Munkberg and Jon Hasselgren. My main research interests include photo-realistic rendering, global illumination, and sampling techniques. I have also done some work on hardware algorithms and in the future I will be involved in mobile graphics.

In July 2006, I spent a very enjoyable month at the University of Montreal, where I was working with Victor Ostromoukhov, Pierre Poulin, and the students Fabrice Rousselle and Luc Leblanc. Our reserach was later published in a paper at CGI 2008 (see below). I also attended SIGGRAPH 2006 in Boston, where one of my co-authored papers on HDR texture compression was presented.

In 2007/08, I continued my reserach on sampling and exploiting coherence in dynamic scenes. Two of my projects on importance sampling of direct illumination got accepted to leading conferences: Eurographics 2008 (Crete) and EGSR 2008 (Sarajevo). I also attended CGI 2008 in Istanbul. I have recently started looking at algorithms for efficient multi-view ray tracing.

I'm now working for Intel Corporation since 2008.

Publications

	Jim Nilsson, Petrik Clarberg, Björn Johnsson, Jacob Munkberg, Jon Hasselgren, Robert Toth, Marco Salvi, and Tomas Akenine-Möller Design and Novel Uses of Higher-Dimensional Rasterization High Performance Graphics, 2012. bibtex
	Jacob Munkberg, Petrik Clarberg, Jon Hasselgren, Robert Toth, Masamichi Sugihara, and Tomas Akenine-Möller Hierarchical Stochastic Motion Blur Rasterization High Performance Graphics, 2011. bibtex
	Magnus Andersson, Björn Johnsson, Jacob Munkberg, Petrik Clarberg, Jon Hasselgren, and Tomas Akenine-Möller Efficient Multi-view Ray Tracing using Edge Detection and Shader Reuse The Visual Computer (Proceedings of CGI 2011), vol. 27(6-8), June 2011. bibtex
	Petrik Clarberg, Robert Toth, Jon Hasselgren, and Tomas Akenine-Möller An Optimizing Compiler for Automatic Shader Bounding Computer Graphics Forum (Proceedings of EGSR 2010), vol. 29(4), pp. 1259-1268. bibtex
	Petrik Clarberg and Tomas Akenine-Möller Exploiting Visibility Correlation in Direct Illumination Computer Graphics Forum (Proceedings of EGSR 2008), vol. 27(4), pp. 1125-1136. bibtex
	Petrik Clarberg Fast Equal-Area Mapping of the (Hemi)Sphere using SIMD (preprint) Journal of Graphics Tools, vol. 13(3), pp. 53-68, 2008. source  bibtex
	Jacob Ström, Per Wennersten, Jim Rasmusson, Jon Hasselgren, Jacob Munkberg, Petrik Clarberg and Tomas Akenine-Möller Floating-Point Buffer Compression in a Unified Codec Architecture In Proceedings of Graphics Hardware 2008, pp. 75-84. bibtex
	Petrik Clarberg and Tomas Akenine-Möller Practical Product Importance Sampling for Direct Illumination Computer Graphics Forum (Proceedings of Eurographics 2008), vol. 27(2), pp. 681-690. bibtex
	Fabrice Rousselle, Petrik Clarberg, Luc Leblanc, Victor Ostromoukhov, and Pierre Poulin Efficient Product Importance Sampling using Hierarchical Thresholding The Visual Computer (Proceedings of CGI 2008), vol 24(7-9), pp. 465-474. bibtex
	Henrik Malm, Magnus Oskarsson, Eric Warrant, Petrik Clarberg, Jon Hasselgren, and Calle Lejdfors Adaptive enhancement and noise reduction in very low light-level video In Proceedings of ICCV 2007, pp. 1-8. bibtex
	Jacob Munkberg, Petrik Clarberg, Jon Hasselgren, and Tomas Akenine-Möller Practical HDR Texture Compression Computer Graphics Forum, vol. 27(6), pp. 1664-1676, 2008. bibtex (Technical Report 92, ISSN 1404-1200, Lund University, August 2007.)
	Jacob Munkberg, Petrik Clarberg, Jon Hasselgren, and Tomas Akenine-Möller High Dynamic Range Texture Compression for Graphics Hardware ACM Transactions on Graphics (Proceedings of SIGGRAPH 2006), pp. 698-706. bibtex
	Petrik Clarberg, Wojciech Jarosz, Tomas Akenine-Möller, and Henrik Wann Jensen Wavelet Importance Sampling: Efficiently Evaluating Products of Complex Functions ACM Transactions on Graphics (Proceedings of SIGGRAPH 2005), pp. 1166-1175. bibtex

Theses

	Petrik Clarberg Hierarchical Variance Reduction Techniques for Monte Carlo Rendering Ph.D. Dissertation, Department of Computer Science, Lund University, Oct 2012. Publicly defended on Dec 7, 2012. Faculty opponent: Jason Lawrence. bibtex
	Petrik Clarberg Efficient Sampling of Products of Functions using Wavelets M.Sc. Thesis, Department of Computer Science, Lund University, March 2005. bibtex