Contact

Dr. Christian Wallraven

Address: Spemannstr. 38
72076 Tübingen
Room number: 112
E-Mail: christian.wallraven
   
Picture of Wallraven, Christian, Dr.

Christian Wallraven

Position: Guest Scientist

As of March 2010, I am a Professor at the Department of Brain and Cognitive Engineering at Korea University. Visit my Cognitive Systems Lab homepage for more information!
Research statement

In my work, I am interested in bringing computer vision, computer graphics and psychophysics together in order to investigate fundamental perceptual and cognitive processes. This fusion of methods and approaches from these three research areas has the potential to greatly advance our understanding of the processes in the human brain.
In my research, I apply this approach to the investigation and modeling of face processing, multi-sensory object representation, object categorization, as well as to modeling of aesthetic perception.
  • Highly controllable, yet realistic computer-generated stimuli offer novel possibilities for advanced psychophysical experiments. The results from those experiments can be used to derive perceptual "shortcuts" to more efficient rendering approaches.
  • Algorithms from computer vision and machine learning can be used to model human performance. Conversely, the results from perceptual experiments can inform computer scientists about how the human brain solves "vision".
  • Generating virtual worlds with computer graphics also helps computer vision researchers, as "ground truth" is available for testing of recognition algorithms, for example. Such algorithms can on the other hand be used to generate and model highly complex scenes more quickly.

Conferences and Grants
- Local coordinator for the EU-sponsored project "POETICON", which aims to synthesize sensorimotor representations and natural language in everyday human interaction
- Co-organizer for the Fourth Symposium on Applied Perception in Graphics and Visualization (APGV07)
- Co-organizer for the second Biologically Motivated Computer Vision Workshop (BMCV2002)
- Local coordinator for the EU-sponsored project "Cognitive Vision Systems", which investigated methods and techniques to build active vision systems for recognition and categorization of objects and events

Selected publications
(For all publications, follow this link)

  • Dahl, C. D., C. Wallraven, H. H. Bülthoff and N. K. Logothetis: Humans and macaques employ similar face processing strategies. Current Biology 19(6), 509-513 (03 2009)
  • Wallraven, C., R. Fleming, D. W. Cunningham, J. Rigau, M. Feixas and M. Sbert: Categorizing art: comparing humans and computers. Computers and Graphics 33(4), 484-495 (08 2009)
  • Nusseck, M., D. W. Cunningham, C. Wallraven and H. H. Bülthoff: The contribution of different facial regions to the recognition of conversational expressions. Journal of Vision 8(8:1), 1-23 (06 2008)
  • Wallraven, C., M. Breidt, D. W. Cunningham and H. H. Bülthoff: Evaluating the Perceptual Realism of Animated Facial Expressions. ACM Transactions on Applied Perception 4(4:4), 1-20 (01 2008)
  • Cooke, T., F. Jäkel, C. Wallraven and H. H. Bülthoff: Multimodal Similarity and Categorization of Novel, Three-Dimensional Objects. Neuropsychologia 45(3), 484-495 (02 2007)
  • Wallraven, C., A. Schwaninger and H. H. Bülthoff: Learning from Humans: Computational Modeling of Face Recognition. Network: Computation in Neural Systems 16(4), 401-418 (12 2005)

Current projects
- A computational recognition system grounded in perceptual research. The system exploits the temporal information inherent in natural visual input for object learning and recognition and includes the first framework for interfacing local feature approaches with Support Vector Machines.
- Cross-species comparison of processing of faces (with C. Dahl)
- Perception of face expressions using computer animations and real videos (with D. Cunningham, and K. Kaulard)
- How do we perceive art? (with R. Fleming and R. Pepperell)
- Multimodal categorization of novel objects (with N. Gaissert)
- Visuohaptic processing of faces (with L. Dopjans)
- Computational modeling of scene gist (with C. Herdtweck)
- Recognition and categorization of objects from 3D data (with B. Browatzki and B. Graf and J. Kubacki from Fraunhofer IPA)
- Development of recording setups and processing pipelines for video sequences, 3D and 4D scanning (with M. Breidt, C. Curio, M. Kleiner)

Conferences and Grants
- Local coordinator for the EU-sponsored project "POETICON", which aims to synthesize sensorimotor representations and natural language in everyday human interaction
- Co-organizer for the Fourth Symposium on Applied Perception in Graphics and Visualization (APGV07)
- Co-organizer for the second Biologically Motivated Computer Vision Workshop (BMCV2002)
- Local coordinator for the EU-sponsored project "Cognitive Vision Systems", which investigated methods and techniques to build active vision systems for recognition and categorization of objects and events

1993 Abitur at Friedrich-List-Gymnasium in Reutlingen
1993-1999 studied Physics at the Eberhard-Karls-Universität in Tübingen
Oct 1997 - Mar 1998 DAAD - Stipend for studies at the University of Edinburgh
July 1998 - July 1999 Diploma thesis at Max Planck Institut for Biological Cybernetics on Stereo Reconstruction of Faces using Class-Based Knowledge
July 1999 Diploma of Physics (with distinction)
Sept 1999 - Oct 2006 PhD thesis at Max Planck Institut for Biological Cybernetics onA computational recognition system grounded in perceptual research
November 2002 co-organizer for the second workshop on Biologically Motivated Computer Vision
May 2001-June 2004 local co-ordinator for EU-funded COGVIS research grant
July 2007 co-organizer for the Fourth Symposium on Applied Perception in Graphics and Visualization
Sep 2009-Dec 2009 visiting researcher at Korea University
since Mar 2010 Professor at Korea University, head of http://cogsys.korea.ac.kr Cognitive Systems Lab

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Conference papers (48):

Wallraven C Person, Cunningham DW Person and Fleming R Person (June-2008) Perceptual and Computational Categories in Art Computational Aesthetics 2008: Eurographics Workshop on Computational Aesthetics (CAe 2008), Eurographics Association, Aire-la-Ville, Switzerland, 131-138.
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Bartz D , Cunningham DW Person, Fischer J and Wallraven C Person (April-2008) The Role of Perception for Computer Graphics In: Eurographics 2008, 29th Annual Conference of the European Association for Computer Graphics (EG 2008), Blackwell, Oxford, United Kingdom, 65-86.
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Campos JL Person, Nusseck H-G Person, Wallraven C Person, Mohler BJ Person and Bülthoff HH Person (November-2007) Visualization and (Mis)Perceptions in Virtual Reality 10. Workshop Sichtsysteme: Visualisierung in der Simulationstechnik, Shaker, Aachen, Germany, 10-14.
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Griesser RT Person, Cunningham DW Person, Wallraven C Person and Bülthoff HH Person (July-2007) Psychophysical investigation of facial expressions using computer animated faces 4th Symposium on Applied Perception in Graphics and Visualization (APGV 2007), ACM Press, New York, NY, USA, 11-18.
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Wallraven C Person, Kaulard K Person, Kürner C Person, Pepperell R and Bülthoff HH Person (July-2007) Psychophysics for perception of (in)determinate art 4th Symposium on Applied Perception in Graphics and Visualization (APGV 2007), ACM Press, New York, NY, USA, 115-122.
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Schwaninger A Person, Schumacher S , Wallraven C Person and Bülthoff HH Person (July-2007) Using 3D computer graphics for perception: The role of local and global information in face processing 4th Symposium on Applied Perception in Graphics and Visualization (APGV 2007), ACM Press, New York, NY, USA, 19-26.
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Wallraven C Person, Kaulard K Person, Kürner C Person, Pepperell R and Bülthoff HH Person (June-2007) In the Eye of the Beholder: Perception of Indeterminate Art In: Computational Aesthetics 2007, Eurographics Workshop on Computational Aesthetics in Graphics, Visualization and Imaging (CAe '07), Eurographics Association, Aire-la-Ville, Switzerland, 121-128.
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Cunningham DW Person, Wallraven C Person, Fleming RW Person and Strasser W (June-2007) Perceptual reparameterization of material properties In: Computational Aesthetics 2007, Eurographics Workshop on Computational Aesthetics in Graphics, Visualization and Imaging (CAe '07), Eurographics Association, Aire-la-Ville, Switzerland, 89-96.
Wallraven C Person and Bülthoff HH Person (2007) Object Recognition in Humans and Machines In: Object Recognition, Attention, and Action, International Workshop on Object Recognition, Attention, and Action 2004, Springer, Berlin, Germany, 89-104.
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Vogel J Person, Schwaninger A Person, Wallraven C Person and Bülthoff HH Person (July-2006) Categorization of natural scenes: local vs. global information 3rd Symposium on Applied Perception in Graphics and Visualization (APGV 2006), ACM Press, New York, NY, USA, 33-40.
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Cooke T Person, Wallraven C Person and Bülthoff H Person (July-2006) Characterizing Perceptual Differences Due to Haptic Exploratory Procedures: An MDS Approach EuroHaptics International Conference (EH 2006), Paris, France, 11-19.
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Wallraven C Person, Fischer J , Cunningham DW Person, Bartz D and Bülthoff HH Person (July-2006) The Evaluation of Stylized Facial Expressions 3rd Symposium on Applied Perception in Graphics and Visualization (APGV 2006), ACM Press, New York, NY, USA, 85-92.
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Fischer J , Cunningham D Person, Bartz D , Wallraven C Person, Bülthoff HH Person and Strasser W (May-2006) Measuring the Discernability of Virtual Objects in Conventional and Stylized Augmented Reality 12. Eurographics Symposium on Virtual Environments (EGVE 06), ACM Press, New York, NY, USA, 53-61.
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Cunningham DW Person, Nusseck H-G Person, Teufel H Person, Wallraven C Person and Bülthoff HH Person (March-2006) A psychophysical examination of Swinging Rooms, Cylindrical Virtual Reality setups, and characteristic trajectories IEEE Virtual Reality Conference 2006, IEEE, Piscataway, NJ, USA, 111-118.
Cooke T Person, Steinke F Person, Wallraven C Person and Bülthoff HH Person (August-2005) A similarity-based approach to perceptual feature validation 2nd Symposium on Applied Perception in Graphics and Visualization (APGV 2005), ACM Press, New York, NY, USA, 59-66.
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Wallraven C Person, Breidt M Person, Cunningham D Person and Bülthoff HH Person (August-2005) Psychophysical evaluation of animated facial expressions 2nd Symposium on Applied Perception in Graphics and Visualization (APGV 2005), ACM Press, New York, NY, USA, 17-24.
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Cooke T Person, Wallraven C Person and Bülthoff HH Person (July-2005) A Comparison of Visual and Haptic Object Representations Based on Similarity 9th International Conference on Information Visualisation (IV '05), IEEE Computer Society, Los Alamitos, CA, USA, 33-40.
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Kleiner M Person, Wallraven C Person, Breidt M Person, Cunningham DW Person and Bülthoff HH Person (December-2004) Multi-viewpoint video capture for facial perception research Workshop on Modelling and Motion Capture Techniques for Virtual Environments (CAPTECH 2004), 55-60.
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Caputo B , Wallraven C Person and Nilsback ME (December-2004) Object Categorization via Local Kernels 17th International Conference on Pattern Recognition (ICPR 2004), IEEE Computer Society, Los Alamitos, CA, USA, 132-135.
Cunningham DW Person, Kleiner M Person, Wallraven C Person and Bülthoff HH Person (August-2004) The components of conversational facial expressions 1st Symposium on Applied Perception in Graphics and Visualization (APGV 2004), ACM Press, New York, NY, USA, 143-149.
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Wallraven C Person, Cunningham DW Person, Breidt M Person and Bülthoff HH Person (August-2004) View dependence of complex versus simple facial motions 1st Symposium on Applied Perception in Graphics and Visualization (APGV 2004), ACM Press, New York, NY, USA, 181.
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Wallraven C Person, Schwaninger A Person and Bülthoff HH Person (June-2004) Learning from Humans: Computational Modeling of Face Recognition Early Cognitive Vision Workshop (ECVW 2004), 1-4.
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Wallraven C Person, Caputo B and Graf ABA Person (October-2003) Recognition with Local Features: the Kernel Recipe Ninth IEEE International Conference on Computer Vision (ICCV 2003), IEEE Computer Society, Los Alamitos, CA, USA, 257-264.
Breidt M Person, Wallraven C Person, Cunningham DW Person and Bülthoff HH Person (September-2003) Combining 3D Scans and Motion Capture for Realistic Facial Animation In: Eurographics 2003, 24th Annual Conference of the European Association for Computer Graphics, Eurographics Association, Aire-la-Ville, Switzerland, 63-66.
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Cunningham DW Person, Breidt M Person, Kleiner M Person, Wallraven C Person and Bülthoff HH Person (September-2003) The inaccuracy and insincerity of real faces 3rd IASTED International Conference on Visualization, Imaging, and Image Processing (VIIP 2003), Acta Press, Anaheim, CA, USA, 7-12.
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Cunningham DW Person, Breidt M Person, Kleiner M Person, Wallraven C Person and Bülthoff HH Person (May-2003) How believable are real faces? Towards a perceptual basis for conversational animation 16th International Conference on Computer Animation and Social Agents (CASA 2003), IEEE, Los Alamitos, CA, USA, 23-29.
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Wallraven C Person, Schwaninger A Person, Schumacher S and Bülthoff HH Person (November-2002) View-based recognition of faces in man and machine: Re-visiting Inter-Extra-Ortho In: Biologically Motivated Computer Vision, Second International Workshop on Biologically Motivated Computer Vision (BMCV 2002), Springer, Berlin, Germany, 651-660.
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Bülthoff HH Person, Wallraven C Person and Graf A Person (August-2002) View-based dynamic object recognition based on human perception 16th International Conference on Pattern Recognition (ICPR 2002), IEEE, Piscataway, NJ, USA, 768-776.
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Wallraven C Person and Bülthoff HH Person (December-2001) Automatic acquisition of exemplar-based representations for recognition from image sequences CVPR 2001 Workshop on Models versus Exemplars in Computer Vision, 1-9.
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Wallraven C Person and Bülthoff HH Person (December-2001) View-based recognition under illumination changes using local features CVPR 2001 Workshop on Identifying Objects Across Variations in Lighting: Psychophysics and Computation, 1-8.
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Wallraven C Person and Bülthoff HH Person (September-2001) Acquiring Robust Representations for Recognition from Image Sequences In: Pattern Recognition, 23rd DAGM Symposium, Springer, Berlin, Germany, 216-222.
Wallraven C Person, Blanz V Person and Vetter T Person (September-1999) 3D-reconstruction of faces: Combining stereo with class-based knowledge In: Mustererkennung 1999, 21. DAGM-Symposium (DAGM 1999), Springer, Berlin, Germany, 405-412.
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Contributions to books (5):

Bülthoff HH Person, Wallraven C Person and Giese MA Person: Perceptual Robotics, 2095-2114. In: Springer Handbook of Robotics: Part G, (Ed) B. Siciliano, Springer, Berlin, Germany, (2016).
Bülthoff HH Person, Cunningham DW Person and Wallraven C Person: Dynamic Aspects of Face Processing in Humans, 575-596. In: Handbook of Face Recognition, (Ed) S.Z. Li, Springer, London, UK, (2011).
Wallraven C Person and Bülthoff HH Person: Multimodal Categorization, 488-501. In: Object Categorization: Computer and Human Vision Perspectives, (Ed) S.J. Dickinson, Cambridge University Press, Cambridge, UK, (2009).
Bülthoff HH Person, Wallraven C Person and Giese MA Person: Perceptual Robotics, 1481-1498. In: Springer Handbook of Robotics: Part G, (Ed) B. Siciliano, Springer, Berlin, Germany, (May-2008).
Schwaninger A Person, Wallraven C Person, Cunningham DW Person and Chiller-Glaus SD : Processing of facial identity and expression: a psychophysical, physiological, and computational perspective, 321–343. In: Understanding Emotions, (Ed) S. Anders, Elsevier, Amsterdam, The Netherlands, (2006).

Technical reports (3):

Kleiner M Person, Wallraven C Person and Bülthoff HH Person: The MPI VideoLab: A system for high quality synchronous recording of video and audio from multiple viewpoints, 123, Max Planck Institute for Biological Cybernetics, Tübingen, Germany, (May-2004).
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Graf M Person, Schwaninger A Person, Wallraven C Person and Bülthoff HH Person: Psychophysical results from experiments on recognition & categorisation, IST-2000-29375, Fachhochschule Nordwestschweiz, Information Society Technologies Programme, Cognitive Vision Systems, (November-2002).
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Graf ABA Person and Wallraven C Person: Multi-class SVMs for Image Classification using Feature Tracking, 99, Max Planck Institute for Biological Cybernetics, Tübingen, Germany, (August-2002).
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Posters (49):

Esins J Person, Schultz J Person, Kim BR , Wallraven C Person and Bülthoff I Person (November-2012): Comparing the other race effect and congenital prosopagnosia using a three-experiment test battery, 13th Conference of the Junior Neuroscientists of Tübingen (NeNA 2012), Schramberg, Germany.
Kaulard K Person, Schultz J Person, Wallraven C Person, Bülthoff HH Person and de la Rosa S Person (September-2012): Inverting natural facial expressions puzzles you, 35th European Conference on Visual Perception, Alghero, Italy, Perception, 41(ECVP Abstract Supplement) 103.
Esins J Person, Schultz J Person, Kim BR , Wallraven C Person and Bülthoff I Person (July-2012): Comparing the other-race-effect and congenital Prosopagnosia using a three-experiment test battery, 8th Asia-Pacific Conference on Vision (APCV 2012), Incheon, South Korea, i-Perception, 3(9) 688.
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Aubrey AA , Cunningham DW Person, Marshall D , Rosin PL , Shin A Person and Wallraven C Person (May-22-2012): Sensitivity to backchannels in conversational expressions, 2nd Joint AVA/BMVA Meeting on Biological and Machine Vision, Cambridge, UK.
Perdikis D , Müller V , Kaulard K Person, Wallraven C Person and Lindenberg U (May-2012): EEG brain dynamics during processing of static and dynamic facial emotional expression, 1st Conference of the European Society for Cognitive and Affective Neuroscience (ESCAN 2012), Marseille, France.
Lee RK Person, Bülthoff I Person, Ammann R , Wallraven C Person and Bülthoff HH Person (September-2011): The other-race effect is not ubiquitous, 11th Annual Meeting of the Vision Sciences Society (VSS 2011), Naples, FL, USA, Journal of Vision, 11(11) 626.
Kaulard K Person, de la Rosa S Person, Schultz J Person, Fernandez Cruz AL Person, Bülthoff HH Person and Wallraven C Person (September-2011): What are the properties underlying similarity judgments of facial expressions?, 34th European Conference on Visual Perception, Toulouse, France, Perception, 40(ECVP Abstract Supplement) 115.
Wallraven C Person, Schultze M Person, Mohler B Person, Volkova E Person, Alexandrova I Person, Vatakis A Person and Pastra K (September-2010): Understanding Objects and Actions: a VR Experiment, 2010 Joint Virtual Reality Conference of EuroVR - EGVE - VEC (JVRC 2010), Stuttgart, Germany.
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Herdtweck C Person and Wallraven C Person (August-2010): Horizon estimation: Perceptual and computational experiments, 33rd European Conference on Visual Perception, Lausanne, Switzerland, Perception, 39(ECVP Abstract Supplement) 106.
Bülthoff I Person, Lee RK Person, Wallraven C Person and Bülthoff HH Person (August-2010): No other-race effect found in a task using faces differering only in race-specifying information, 33rd European Conference on Visual Perception, Lausanne, Switzerland, Perception, 39(ECVP Abstract Supplement) 90.
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Last updated: Tuesday, 18.11.2014