Me, Geneva, December 2007

Darren Cosker

Royal Academy of Engineering/EPSRC Research Fellow

Department of Computer Science
University of Bath
Bath
United Kingdom
BA2 7AY

D.P.Cosker(at)cs(dot)bath(dot)ac(dot)uk

I joined the Department of Computer Science at Bath University in 2007. I received a BSc in Computer Science with Honours from Cardiff University in 2001, and a Ph.D in Computer Science from Cardiff University in 2006. My thesis explored the synthesis and perceptual analysis of visual speech. I currently hold a Royal Academy of Engineering/EPSRC Research Fellowship.
From October 2007 I will be a visiting researcher at the Centre for Vision, Speech and Signal Processing (CVSSP) at Surrey University.

My research interests lie in the convergence of Computer Vision, Computer Graphics and Psychology - particularly in relation to human motion analysis and synthesis.

Selected Publications
Face images

E. Krumhuber, A. Manstead, D. Cosker, D. Marshall and P. L. Rosin, "Effects of Dynamic Attributes of Smiles in Human and Synthetic Faces: A Simulated Job Interview Setting", Journal of Non-Verbal Behaviour (in press), 2008.
Face Alignment


L. Benedikt, D. Cosker, D. Marshall and P.L. Rosin, "Facial Dynamics in Biometric Identification", In Proc. of Britsh Machine Vision Conference (BMVC), 2008 (to appear).
gav modes

D. Cosker, R. Borkett, D. Marshall and P. L. Rosin, "Towards Automatic Performance Driven Animation Between Multiple Types of Facial Model", IET Computer Vision (in press), 2008.
Handshake_Examples
 Y. Zheng, Y. Hicks, D. Marshall and D. Cosker, "Generating Human Interactive Behaviours using the Windowed Viterbi Algorithm", In Proc. of the Third International Conference on Computer Graphics Theory and Applications (GRAPP), 2008

Videos: Push, Pull, Handshake
mocap
mocap


D. Cosker, C. Holt, D. Mason, G. Whatling, D. Marshall and P. L. Rosin, "Automatic Audio Driven Animation of Non-Linguistic Vocalisations", In Proc. of CMBBE 2008 (to appear).

D. Cosker, C. Holt, D. Mason, G. Whatling, D. Marshall and P. L. Rosin, "Audio Driven Animation of Non-Verbal Actions", In Proc. of IET European Conference on Visual Media Procution (CVMP), 2007.

Download: Poster, Abstract
Face with dynamics L. Benedikt, E. Krumhuber, A. Calvert, D. Cosker, P. Rosin and D. Marshall, "Using Dynamic 3D Facial Data to Create 3D Appearance Models of Facial Action Units", Eurographics/SIGGRAPH Symposium on Computer Animation, San Diego, 2007.
(Also appeared as a poster at SIGGRAPH 2007).

Videos: Example_1, Example_2.
thumbnail

D. Cosker, S. Roy, P. L. Rosin, D. Marshall, "Remapping Animation Parameters between Multiple Types of Facial Model", Lecture Notes in
Computer Science (LNCS), Volume 4418, pages 365-378, Springer, 2007.

Videos: Overview, Simple_Morph_Target_Mapping_Example
Smile trajectory E. Krumhuber, A. Manstead, D. Cosker, P.L.Rosin and A.D. Marshall, "Facial Dynamics as Indicators of Trustworthiness and Cooperative Behaviour", Emotion, Vol 7, No 4, pp 730-735, 2007.

Videos: Overview. Smile_Analysis - this curve is then manipulated to create 'fake' or 'genuine' smiles.
virtual friend Z.Zheng, Y. A. Hicks, D. Cosker, D. Marshall and J. A. Chambers, “Virtual Friend: Tracking and Generating Natural Interactive Behaviours in Real Video”, In Proc. of IEEE International Conference on Signal Processing (ICSP), Gullin, China, 2006.

Videos: Push_Video_Example
Trajectory synthesis D. Cosker, D. Marshall, P. Rosin, S. Paddock, S. Rushton, ``Towards Perceptually Realistic Talking Heads: Models, Metrics and McGurk'', ACM Transactions on Applied Perception, vol. 2, no. 3, pp 270-285, 2005.

Videos: Synthetic_McGurk_1, (Tuple - Synthetic_Clip="Dead", Audio_Clip="Mat", Perception="Gnat")
The full set of videos used in this paper can be obtained by contacting me.
BSS W. Wang, D. Cosker, Y. Hicks, S. Sanei, and J. A. Chambers, ``Video Assisted Speech Source Separation'',
In Proc. IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2005 Philadelphia, USA.
Trajectory Synthesis D. Cosker, D. Marshall, P. Rosin, Y.A. Hicks, ``Speech Driven Facial Animation using a Hidden Markov Co-articulation Model'', In Proc. of IEEE International Conference on Pattern Recognition (ICPR), Vol. 1, pp 128-131, 2004.

Videos: Example_1, Example_2 (both example videos generated using only speech), Tracking_Example
Annotated audio-visual training data used in this paper can be obtained by contacting me.
Hierarchy D. Cosker, D. Marshall, P. Rosin, Y.A. Hicks,``Speech Driven Facial Animation using a Hierarchical Model'', IEE Vision, Image and Signal Processing, Vol. 151 (4) pp. 314-321, 2004.
System overview D. Cosker, "Animation of a Hierarchical Appearance Based Facial Model and Perceptual Analysis of Visual Speech", Ph.D Thesis, Cardiff University, 2005

All full list of my publications can be found here.