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Hullin, MatthiasHullin, MatthiasHullin, Matthias

Matthias B. Hullin (Dipl.-Phys., Dr.-Ing.)

Postdoctoral Fellow
University of British Columbia
Department of Computer Science
X869-2366 Main Mall
Vancouver, BC, V6T 1Z4, CANADA

E-mail: lastname at cs dot ubc dot ca
Phone: +1 604-827-3132
Fax: +1 604-822-5485 (Attn: Dr. Matthias Hullin)

Photometric normals captured using Light Stage 5
at the USC Institute for Creative Technologies Graphics Lab, back in 2008.

News

Research Interests

Show research statement... (or scroll down for a full-color version)

Light transport and optical phenomena

Whether in the synthesis or the analysis (interpretation) of images, we have to use strongly simplifying models for the physical nature of light and its interaction with the real world. My work deals with the development of light transport models that are closer to physics but still tractable in terms of storage and computational effort. By using simple but powerful extensions on top of established approaches, we have introduced techniques that achieved results of unprecedented quality in applications as diverse as 3D scanning, photorealistic rendering (offline and real-time), and display technology. Many unsolved problems will benefit from improved models of light transport.

Forward and backward graphics

My research is dedicated to the development of novel solutions to challenges in computer vision and image processing. In recent research projects, we have demonstrated the potential of analysis-by-synthesis techniques for problems such as the tomographic reconstruction of fluid mixing processes. This emerging family of methods marries a synthesis step (forward model of image formation) to an optimization loop, in order to solve the inverse problem of recovering the model parameters that best explain the given set of measured data. The forward step can be as complex as a full global illumination renderer! The resulting objective functions are often mathematically ill-behaved and therefore require careful selection and adaptation of suitable optimization schemes.

Computational sensing

The advent of digital image sensors, together with today's numerical methods and advanced compute hardware, allows us to revisit the history of engineering. A recurring theme in my work is to question established design principles that date back to the pre-computer age. For instance, we recently demonstrated a computational camera that, instead of a complex lens with up to several dozen individual glass elements, uses much simpler optics while still maintaining excellent picture quality. Thanks to current developments, in particular sparse codings, many other applications will benefit as we begin to treat computation as an integral component of the measurement process.

CV

Publications

Peer-Reviewed Papers

2013

Felix Heide*, Matthias B. Hullin*, James Gregson and Wolfgang Heidrich:
Low-Budget Transient Imaging using Photonic Mixer Devices
In ACM Transactions on Graphics (Proceedings of SIGGRAPH 2013), to appear. *Joint first authors
Also: Light-in-Flight: Transient Imaging using Photonic Mixer Devices
In ACM SIGGRAPH 2013 Emerging Technologies, to appear.

Project Page PDF Show BibTeX...
@article{HeideSIG2013, author = {Felix Heide and Matthias B. Hullin and James Gregson and Wolfgang Heidrich}, title = {Stochastic Tomography and its Applications in 3D Imaging of Mixing Fluids}, journal = {ACM Trans. Graph. (Proc. SIGGRAPH 2013)}, volume = {32}, number = {4}, year = {2013}, pages = {to appear}, }
James Gregson, Felix Heide, Matthias B. Hullin, Mushfiqur Rouf and Wolfgang Heidrich:
Stochastic Deconvolution
In: Proceedings of IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2013) , Portland, Oregon, USA, to appear.
Project Page Source code PDF Show BibTeX...
@InProceedings{GregsonCVPR2013, author = {James Gregson and Felix Heide and Matthias B. Hullin and Mushfiqur Rouf and Wolfgang Heidrich}, title = {Stochastic Deconvolution}, booktitle = {IEEE Conference on Computer Vision and Pattern Recognition (CVPR)}, year = {2013}, month = {June}, pages = {(to appear)}, }
Felix Heide, Mushfiqur Rouf, Matthias B. Hullin, Björn Labitzke, Wolfgang Heidrich and Andreas Kolb:
High-Quality Computational Imaging Through Simple Lenses
ACM Transactions on Graphics (to be presented at SIGGRAPH 2013), to appear.
Project Page Source code PDF Show BibTeX...
@article{HeideTOG2013, author = {F. Heide and M. Rouf and M. Hullin and B. Labitzke and W. Heidrich and A. Kolb}, title = {High-Quality Computational Imaging Through Simple Lenses}, journal = {ACM Transactions on Graphics}, year = {2013}, pages = {to appear}, }
Matthias B. Hullin, Ivo Ihrke, Wolfgang Heidrich, Tim Weyrich, Gerwin Damberg and Martin Fuchs:
State of the Art in Computational Fabrication and Display of Material Appearance
EUROGRAPHICS 2013 State-of-the-Art Report (STAR), to appear.
PDF Show BibTeX...
@article{HullinSTAR2013, author={Matthias B. Hullin and Ivo Ihrke and Wolfgang Heidrich and Tim Weyrich and Gerwin Damberg and Martin Fuchs}, title={Computational Fabrication and Display of Material Appearance}, booktitle={Eurographics State-of-the-Art Reports {(STAR)}}, pages={17 pages}, month=may, location={Girona, Spain}, year=2013, }

2012

Matthias B. Hullin, Johannes Hanika and Wolfgang Heidrich:
Polynomial Optics: A Construction Kit for Efficient Ray-Tracing of Lens Systems
In Proceedings of EUROGRAPHICS Symposium on Rendering 2012.
Project Page Source code PDF Source code Show BibTeX...
@article{HullinEGSR2012, author = {Matthias B. Hullin and Johannes Hanika and Wolfgang Heidrich}, title = {{Polynomial Optics}: A Construction Kit for Efficient Ray-Tracing of Lens Systems}, journal = {Computer Graphics Forum (Proceedings of EGSR 2012)}, volume = {31}, number = {4}, year = {2012}, month = jul, }
James Gregson, Michael Krimerman, Matthias B. Hullin and Wolfgang Heidrich:
Stochastic Tomography and its Applications in 3D Imaging of Mixing Fluids
In ACM Transactions on Graphics (Proceedings of SIGGRAPH 2012).
Project Page Paper Video PDF Show BibTeX...
@article{GregsonSIG2012, author = {James Gregson and Michael Krimerman and Matthias B. Hullin and Wolfgang Heidrich}, title = {Stochastic Tomography and its Applications in 3D Imaging of Mixing Fluids}, journal = {ACM Trans. Graph. (Proc. SIGGRAPH 2012)}, volume = {31}, number = {4}, year = {2012}, pages = {52:1--52:10}, }

2011

Matthias B. Hullin, Elmar Eisemann, Hans-Peter Seidel and Sungkil Lee:
Physically-Based Real-Time Lens Flare Rendering
In ACM Transactions on Graphics (Proceedings of SIGGRAPH 2011).
Project page Paper Video SIGGRAPH Talk PDF Show BibTeX...
@article{HullinSIG2011, author = {Matthias B. Hullin and Elmar Eisemann and Hans-Peter Seidel and Sungkil Lee}, title = {Physically-Based Real-Time Lens Flare Rendering}, journal = {ACM Trans. Graph. (Proc. SIGGRAPH 2011)}, volume = {30}, number = {4}, year = {2011}, pages = {108:1--108:9}, }
Matthias B. Hullin, Hendrik P. A. Lensch, Ramesh Raskar, Hans-Peter Seidel and Ivo Ihrke:
Dynamic Display of BRDFs
In Computer Graphics Forum (Proceedings of Eurographics 2011), pp. 475-483.
Also: ACM SIGGRAPH 2011 Emerging Technologies.
Project page PDF (300dpi) PDF (Full-Res) Show BibTeX...
@INPROCEEDINGS{HullinEG2011, AUTHOR = {Hullin, Matthias B. and Lensch, Hendrik P. A. and Raskar, Ramesh and Seidel, Hans-Peter and Ihrke, Ivo}, EDITOR = {Deussen, Oliver and Chen, Min}, TITLE = {Dynamic Display of {BRDFs}}, BOOKTITLE = {Computer Graphics Forum (Proc. EUROGRAPHICS)}, ORGANIZATION = {Eurographics}, PADDRESS = {Oxford, UK}, ADDRESS = {Llandudno, UK}, PUBLISHER = {Blackwell}, YEAR = {2011}, PAGES = {475--483}, }
Kristina Scherbaum, Tobias Ritschel, Matthias Hullin, Thorsten Thormählen, Volker Blanz, Hans-Peter Seidel:
Computer-Suggested Facial Makeup
In Computer Graphics Forum (Proceedings of Eurographics 2011), pp. 485-492.
Project page PDF
RTT Emerging Technology Contest 2011
Show BibTeX...
@article{ScherbaumEG2011, author = {Kristina Scherbaum and Tobias Ritschel and Matthias Hullin and Thorsten Thorm\"{a}hlen and Volker Blanz and Hans-Peter Seidel }, title = {Computer-suggested Facial Makeup}, journal = {Comp. Graph. Forum (Proc. Eurographics 2011)}, year = {2011}, volume = {30}, number = {2} }

2010

Matthias B. Hullin, Johannes Hanika, Boris Ajdin, Hans-Peter Seidel, Jan Kautz and Hendrik P. A. Lensch:
Acquisition and Analysis of Bispectral Bidirectional Reflectance and Reradiation Distribution Functions
In ACM Transactions on Graphics (Proceedings of SIGGRAPH 2010).
PDF (Lo-Res) PDF (Full-Res) Show BibTeX...
@article{HullinSIG2010, author = {Hullin, Matthias B. and Hanika, Johannes and Ajdin, Boris and Seidel, Hans-Peter and Kautz, Jan and Lensch, Hendrik P. A.}, title = {Acquisition and analysis of bispectral bidirectional reflectance and reradiation distribution functions}, journal = {ACM Trans. Graph. (Proc. SIGGRAPH 2010)}, volume = {29}, number = {4}, year = {2010}, pages = {97:1--97:7}, }

2008

Jenny Kehrbusch, Elena A. Ilin, Matthias B. Hullin, Egbert Oesterschulze:
High frequency columnar silicon microresonators for mass detection
Appl. Phys. Lett. 93, 023102 (2008)
Abstract Show BibTeX...
@article{kehrbuschAPL2008, author = {J. Kehrbusch and E. A. Ilin and M. Hullin and E. Oesterschulze}, title = {High frequency columnar silicon microresonators for mass detection}, publisher = {AIP}, year = {2008}, journal = {Applied Physics Letters}, volume = {93}, number = {2}, numpages = {3}, pages = {023102}, }
Matthias B. Hullin, Martin Fuchs, Ivo Ihrke, Hans-Peter Seidel and Hendrik P. A. Lensch:
Fluorescent Immersion Range Scanning
In ACM Transactions on Graphics (Proceedings of SIGGRAPH 2008).
Project page PDF Show BibTeX...
@article{HullinSIG2008, title = "Fluorescent Immersion Range Scanning", author = "Matthias B. Hullin and Martin Fuchs and Ivo Ihrke and Hans-Peter Seidel and Hendrik P. A. Lensch", journal = "ACM Trans. Graph. (Proc. SIGGRAPH 2008)", volume = 27, number = 3, year = 2008, pages = "87:1--87:10", }
Matthias B. Hullin, Martin Fuchs, Boris Ajdin, Ivo Ihrke, Hans-Peter Seidel and Hendrik P. A. Lensch:
Direct Visualization of Real-World Light Transport
In Proceedings of VMV 2008
Project page PDF
Boris Ajdin, Matthias B. Hullin, Christian Fuchs, Hans-Peter Seidel and Hendrik P. A. Lensch:
Demosaicing by Smoothing along 1D Features
In Proceedings of IEEE Conference on Computer Vision and Pattern Recognition (CVPR 2008) , Anchorage, USA, June 2008
Project page
PDF

Tech Reports and Other Papers

Matthias B. Hullin, Boris Ajdin, Johannes Hanika, Hans-Peter Seidel, Jan Kautz, Hendrik P. A. Lensch:
Acquisition and Analysis of Bispectral Bidirectional Reflectance Distribution Functions
MPI Informatik Research Report MPI-I-2009-04-001
Andrew Jones, Jen-Yuan Chiang, Abhijeet Ghosh, Magnus Lång, Matthias Hullin, Jay Busch, Paul Debevec:
Real-time Geometry and Reflectance Capture for Digital Face Replacement
ICT Technical Report ICT-TR-04-2008
Project page

Books

Impulse Physik: Mechanische Schwingungen und Wellen.
Klett-Verlag, Stuttgart, 2004. ISBN-13: 978-3127725933
Buy it :-)

Posters

Felix Heide, Mushfiqur Rouf, Matthias B. Hullin, Björn Labitzke, Wolfgang Heidrich and Andreas Kolb:
What are the limitations of solvers for sparse image models? An empirical study considering gradient priors for image reconstruction
IEEE International Conference on Computational Photography (ICCP), Cambridge, Massachusetts, USA, April 2013
Jenny Kehrbusch, Elena Ilin, Matthias Hullin, Egbert Oesterschulze:
Miniaturized silicon microoscillators for mass detection
Nano2Life Meeting 2008, Heraklion, Crete/Greece, June 2008
(2nd Poster Award!)
Jenny Kehrbusch, Elena Ilin, Matthias Hullin, Egbert Oesterschulze:
Miniaturised Columnar Sensors for Ultrasensitive Mass Detection
International Workshop on Nanomechanical Cantilever Sensors, Mainz, Germany, May 2008
(Poster Award!)
Jenny Kehrbusch, Matthias Hullin, Egbert Oesterschulze:
Miniaturised Columnar Sensors for Ultrasensitive Mass Detection
DPG 71st Annual Meeting 2007 and DPG-Spring Meeting of the Division Condensed Matter, Regensburg, Germany, March 2007
Aleksandar Vidic, Jenny Kehrbusch, Matthias Hullin, Christiane Ziegler, Egbert Oesterschulze:
Miniaturised Selective Mass Sensors for Fluidic Applications
AOFA 2006, Kaiserslautern, Germany, September 2006

Teaching

Spring 2012: Occasional substitute for Wolfgang Heidrich in "CPSC 514 - Computer Graphics: Rendering", University of British Columbia
Summer 2010: Course on "Computational Photography" (6CP, co-taught with Ivo Ihrke), Saarland University

Selected Talks (does not include paper presentations at conferences)

Jun 22, 2012 – Receiving and Giving: Computer Graphics at the Interface of DisciplinesUni Bonn (Invited Talk)
Mar 25, 2009 – 3D Scanning of "Unscannable" MaterialsMIT Media Lab, Cambridge, MA, USA (Invited Talk)
Dec 4, 2008 – 3D Scanning of "Unscannable" MaterialsRingvorlesung IMPRS-CS
Dec 1, 2007 – Physik und Musik (Physics and Music)TU Kaiserslautern, Tag der Physik (Invited Talk)

Academic service

Served as a reviewer for Eurographics, Computer Graphics Forum, SIGGRAPH, SIGGRAPH Asia, EGSR, PG, JOSA A, VMV, SCCG, The Visual Computer, TPAMI, Computers&Graphics, IJCV.

IPC member, CAD/Graphics 2013

Links

Private Stuff