Werner Tomas

	Tomas Werner Center for Machine Perception (CMP) Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University Karlovo namesti 13, 12135 Praha 2, Czech Republic E-mail: werner@cmp.felk.cvut.cz Fax +420-2-2435-7224, tel. office +420-2-2435-5723, mobile +420-602-160379

Position	Researcher at Center for Machine Perception
Education	MSc in computer science (computer graphics) at Czech Technical University PhD in cybernetics (computer vision) at Czech Technical University
Expertise	Computer vision, geometry of multiple views, Markov random fields, constraint satisfaction and optimisation, machine learning.
Past projects	INTAS 04-77-7347 PRINCESS (Principles of Dissimilarity-Based Pattern Recognition in Signals, Symbolic Sequences and Images) FP6-IST-004176 COSPAL
Current projects	MSM6840770038 (Decision making and control in manufacturing III) FP7 ICT-215078 DIPLECS
Curriculum Vitae	[pdf]

Selected publications

(Complete list of my publications is available here.)

Image-based rendering

T. Werner, R.D. Hersch, V. Hlavac.: Rendering real-world objects using view interpolation. Intl. Conf. on Computer Vision (ICCV), June 1995. [bib]
T. Werner, V. Hlavac, A. Leonardis, T. Pajdla.: Selection of reference views for image-based representation. Intl. Conf. on Pattern Recognition (ICPR), August 1996. [bib]

3D computer vision

T. Werner, T. Pajdla, V. Hlavac: Oriented Projective Reconstruction. 22-nd Workshop of the Austrian Association for Pattern Recognition (OAGM/IAPR), May 1998. (OAGM'98 Best Paper Award) [bib], [gzipped postscript].
T. Werner, T. Pajdla: Oriented Matching Constraints. British Machine Vision Conf. (BMVC) , September 2001. [bib], [gzipped postscript]
O. Chum, T. Werner, T. Pajdla: Joint Orientation of Epipoles. British Machine Vision Conf. (BMVC) , September 2003. [bib], [pdf]
T. Werner: Constraint on Five Points in Two Images. Conf. on Computer Vision and Pattern Recognition (CVPR), June 2003. (CVPR'03 Best Paper Honourable Mention) [bib], [pdf]
T. Werner: Combinatorial Constraints on Multiple Projections of a Set of Points. Intl. Conf. on Computer Vision (ICCV), October 2003. [bib], [gzipped postscript]
O. Chum, T. Werner, J. Matas: Two-view Geometry Estimation Unaffected by a Dominant Plane. Conf. on Computer Vision and Pattern Recognition (CVPR), June 2005. [bib], [pdf]
D. Martinec, J. Matas, M. Perdoch, O. Chum, S. Obdrzalek, T. Pajdla, T. Werner: The second place in Computer Vision Contest by Intl. Conf. on Computer Vision (ICCV), 2005.

Automated architecture reconstruction (done during my stay at Visual Geometry Group, Oxford, U.K. in 2001-2)

T. Werner, A. Zisserman: New Techniques for Automated Architectural Reconstruction from Photographs. European Conf. on Computer Vision (ECCV), May 2002. [bib], [pdf].
T. Werner, A. Zisserman: Model Selection for Automated Architectural Reconstruction from Multiple Views. British Machine Vision Conference (BMVC), September 2002. [bib], [pdf]

Markov random fields, constraint satisfaction and optimisation

T. Werner. A Linear Programming Approach to Max-sum Problem: A Review. Research report CTU-CMP-2005-25, Center for Machine Perception, Czech Technical University, December 2005. [pdf], [software & cited papers].
T. Werner. A Linear Programming Approach to Max-sum Problem: A Review. IEEE Trans. on Pattern Recognition and Machine Intelligence (PAMI) 29(7), July 2007. [bib], [article pdf], [slides pdf], [software & cited papers].
T. Werner, A. Shekhovtsov. Unified Framework for Semiring-Based Arc Consistency and Relaxation Labeling. Computer Vision Winter Workshop , St. Lambrecht, Austria, February 2007. [bib], [pdf]
T. Werner. What Is Decreased by the Max-sum Arc Consistency Algorithm? Intl. Conf. on Machine Learning, July 2007. [bib], [paper pdf], [slides pdf].
T. Werner. High-arity Interactions, Polyhedral Relaxations, and Cutting Plane Algorithm for Soft Constraint Optimisation (MAP-MRF). Computer Vision and Pattern Recognition (CVPR) Conference, Anchorage, USA, June 2008. [paper pdf], [errata pdf], [slides pdf].
T. Werner. Linear Programming Relaxation Approach to Weighted CSP. Invited lecture at 9th Intl. Workshop on Preferences and Soft Constraints (SofT'08). Held in conjunction with the 14th Intl. Conf. on Principles and Practice of Constraint Programming, Sydney, Australia, September 2008. [slides pdf]
T. Werner. Marginal Consistency: Unifying Constraint Propagation on Commutative Semirings. 9th Intl. Workshop on Preferences and Soft Constraints (SofT'08). Held in conjunction with the 14th Intl. Conf. on Principles and Practice of Constraint Programming, Sydney, Australia, ed. by Joao Marques-Silva, Pedro Meseguer, Simon de Givry, pp. 43-57. September 2008. [bib] [paper pdf]
T. Werner. Revisiting the Decomposition Approach to Inference in Exponential Families and Graphical Models. Research report CTU-CMP-2009-06, Center for Machine Perception, Czech Technical University, May 2009. [pdf]
T. Werner. Fixed Points of Loopy Belief Propagation as Zero Gradients of a Function of Reparameterizations. Research report CTU-CMP-2010-05, Center for Machine Perception, Czech Technical University, February 2010. [pdf]

Software I wrote

Implementation of the Augmenting DAG algorithm to solve LP relaxation of the max-sum labelling problem (also known as MAP inference in MRF, Weighted Constraint Satisfaction Problem)
LMATCH: Matlab Toolbox for Matching Line Segments across Multiple Calibrated Images