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Director of
Active Perception Laboratory.
Faculty member in the
Computer Science Department, and the
Center for the Neural Basis of Cognition ,
affliated faculty member in the
Machine Learning Department,
the
Pittsburgh
Supercomputing Center ,
and adjunct faculty member of the
Department of Neuroscience,
University of Pittsburgh.
Associate member of the
Neural Computation and Adaptive Perception program, Canadian Institute for Advanced Research.
.
Coordinator of
Undergraduate Training in Computational Neuroscience (Program in Neural Computation).
Research interests:
computational neuroscience,
computational vision,
neurophysiology of the primate visual systems,
active and adaptive vision, hierarchical coding and inference,
mid-level vision, development of infant vision,
learning and adaptation, structure of neural codes.
Current Research Projects.
Courses and Seminars
Education and Appointments
Honors
Current Postdoctoral Fellows
- Jason Samonds , Ph.D. Neurophysiology/Electrical Engineering (2004) Vanderbilt University.
Current Ph.D. Students
Current Undergraduate Research Fellows
Former Ph.D. Students
- Stella Yu , Ph.D. Robotics 2002, CMU. Assistant professor in computer science, Boston college, MA.
- Brian Potetz , Ph.D. Computer Science, 2008, CMU. Assistant professor in computer science, University of Kansas.
Former Master Students
Former Postdoctoral Fellows
- Matthew Smith , Ph.D. Neuroscience (2002), New York University. University of Pittsburgh.
- Xiaogang Yan , Ph.D. Biomedical Engineering (1990), Zhejiang University, PRC. York University.
- Yugou Yu , Ph.D. Physics (2001) Nanjing University, PRC. Yale University, USA.
Some Former Undergraduate Research Fellows
- Andrew Maas , Computer Science, CMU. Standford Ph.D. program in Computer Science
- Ankit Khambhati , ECE, CMU.
- Lei Liu , Neuroscience. Then attended Temple Medical School
- My Nguyen , Biology. Then attended Heinz School of Public Policy master degree, Carnegie Mellon
- Ken Shan , Mathematics. Then Ph.D. in Computer Science, Harvard University. Now, assistant professor in computer science
and cognitive science, Rutgers, State U. of New Jersey.
- Matt Easterday , Computer Science/Philosophy. Then attended Carnegie Mellon, Ph.D. HCI Computer Science
- Mary Berna , Mechanical Engineering. Then attended Carnegie Mellon, Robotics Ph.D. program.
- Cindy Yang , Biology. Then attended Neuroscience Ph.D. program, UCSF.
- Scott Marmer , Electrical Engineering. Then attended Harvard Law School
- Alexandria Marino , Psychology. Then attend Yale Medical School
- Tom DuBois , Computer Science.
- Elise Cassidente , Computer Science. Then attended Law School
- Khary Mendez , Computer Science. Then became a Software Engineer.
- Iain Proctor , Computer Science.
Publications
-
Stepleton, T., Ghahramani, Z., Gordon G., Lee, T.S. (2009)
The Block Diagonal Infinite Hidden Markov Model
Proceedings of the Twelfth International Conference on Artificial Intelligence and Statistics.
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Potetz, B., Lee, T.S. (2009) Scene statistics and 3D surface perception.
In Computational Vision: From Surfaces to Objects. Chapman Hall.
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Lee, T.S. (2009)
Computational approaches in visual perception
Encyclopedia of Perception, Ed. E.B. Goldstein et al.,
SAGE Press.
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Lee, T.S., Stepleton, T, Potetz, B and Samonds J. (2008)
Neural coding of scene statistics for surface and object inference
In Object Categorization: perspectives from human and machine vision, Ed.
Sven Dickinson, Ales Leonardis, Bernt Schiele, Michael Tarr, Cambridge University Press.
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Lee, T.S. (2008)
Contextual influences in visual processing.
Encyclopedia of Neuroscience, Ed. M.D. Binder, N. Hirokawa and U. Windhorst, Springer-Verlag.
in Press.
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Potetz, B. and Lee, T.S. (2008)
Efficient belief propagation for higher order cliques using linear constraint nodes.
Computer Vision and Image Understanding. 112(1): 39-54.
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Smith, M.A., Kelly, R.C., Lee, T.S., (2007)
Dynamics of response to perceptual pop-out stimuli in macaque V1.
J. Neurophysiology 98: 3436-3449.
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Kelly, R.C., Smith, M.A., Samonds, J.M., Kohn, A., Bonds, A.B., Movshon, J.A.,
Lee, T.S., (2007)
Comparison of recordings from microelectrode arrays and single electrodes in
visual cortex.
J. Neuroscience 27: 261-264.
.
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Samonds, J., Potetz, B., Lee, T.S., (2007)
Neurophysiological evidence of cooperative mechanisms for stereo computation.
NIPS -- Advances in Neural Information Processing Systems 19, 1201-1208, MIT Press
.
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Lee, T.S., Yuille, A (2006)
Efficient coding of visual scenes by grouping and segmentation: theoretical
predictions and biological relevance.
in Bayesian Brain, probabilistic approaches to neural coding. Ed.
K. Doya, S. Ishii, R. Rao, A. Pougeti. MIT Press, 141-185.
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Potetz, B., Lee, T.S. (2006)
Scaling Laws in Natural Scenes and the Inference of 3D Shape.
NIPS -- Advances in Neural Information Processing Systems 18, 1089-1096, MIT Press
.
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Yu, Y., Romero, R., Lee, T.S. (2005)
Preference of sensory neural coding for 1/f signals.
Physics Review Letters, 94 , 108103, 1-4.
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Yu, Y., Lee, T.S. (2005)
Adaptive contrast gain control and information maximization
Neurocomputing, 65-66(2005): 111-116.
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Yu, Y., Potetz, B., Lee, T.S. (2005)
The role of spiking nonlinearity in contrast gain control and information
transmission.
Vision Research, 45(2005): 583-592.
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Stepleton, T., Lee, TS (2005)
Using Co-occurrence and Segmentation to Learn Feature-based Object
Models from Video.
WACV/MOTION 2005 , 129-134
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Deco, D., Lee, T.S. (2004) The role of early visual cortex in
visual integration: a neural model of recurrent interaction.
European Journal of Neuroscience 20: 1089-1100.
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Kelly, R. and Lee, T.S. (2004) Decoding V1 Neuronal Activity using
Particle Filtering with Volterra Kernels.
Advances in Neural Information Processing Systems 15, MIT Press.
.
Ed. Thurn, S., Lawrence, KS, Bernhard, S. 1359-1366.
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Kelly, R. and Lee, T.S. (2004) Decoding visual input based on V1
neuronal activities with
particle filtering.
Neurocomputing. . 58-60: 849-855.
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Yu, Y. and Lee, T.S. (2004) Nonlinear dynamics of spike generation account for
contrast adaptation.
Proceedings of the Computational Neuroscience conference. . Spain.
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Yu, Y., Liu, F., Wang W., Lee, T.S. (2004)
Optimal synchrony state for maximum information transmission.
NeuroReport 15(10): 1605-1610.
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Lee, T.S., Mumford, D. (2003) Hierarchical Bayesian inference in
the visual cortex.
Journal of Optical Society of America, A. . 20(7): 1434-1448.
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Yu, Y., Lee, T.S. (2003) Dynamical mechanisms underlying
contrast gain control in single neurons.
Physics Review, E.. 68(1): 1901-1907.
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Lee, T.S. (2003) Neural basis of attentive
perceptual organization. . In Perceptual
Organization in Vision: Behavioral and Neural Perspectives
Ed. M. Behrmann, C. Olson and R. Kimchi,
Lawrence Erlbaum Associates, 431-457.
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Lee, T.S. (2003) Analysis and
synthesis of visual images in the brain: evidence for Pattern
theory. In
Mathematical methods in computer vision,
Lecture notes in Mathematics and its Application.
Ed. P. Olver and A. Tannenbaum.
Springer-Verlag, 87-106.
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Potetz, B., Lee, T.S. (2003) Statistical correlations between
2D images and 3D structures in natural scenes.
Journal of Optical Socity of America, A. . 20(7): 1292-1303.
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Lee, T.S. (2003) Computations in the early visual cortex.
J. Physiology (Paris) , 97(203), 121-139.
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Romero, R.D., Yu, Y., Afshar, P., Lee, T.S. (2003)
Adaptation of the temporal receptive fields of Macaque V1 neurons
Neurocomputing (52-54): 135-140.
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Yu, Y., Lee, T.S. (2003)
Adaptation of the transfer function of the Hodgkin-Huxley (HH)
neuronal model.
Neurocomputing (52-54): 441-445.
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Lee, T.S., Yang, C., Romero, R.D., and Mumford, D. (2002)
Neural activity in early visual cortex reflects behavioral
experience and higher order perceptual saliency.
Nature Neuroscience 5(6) . 589-597.
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Lee, T.S. (2002) The nature of illusory contour computation.
Neuron 33(5) 667-668.
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Lee, T.S. (2002) Top-down influence in early visual processing:
A Bayesian perspective.
Behaviors and Physiology 77(4-5): 645-650.
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Romero, R., Lee, T.S. (2002). Spike train analysis for single trial
data using Hidden Markov Model Neurocomputing
44-46: 597-604, Elsevier Press.
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Deco, G., Lee, T.S. (2002). An unified model of spatial and object
attention based on inter-cortical biased competition.
Neurocomputing 44-46: 769-774,
Elsevier Press
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Yu, S., T.S. Lee, T. Kanade (2002)
A hierarchical Markov Random Field Model for figure-ground Segregation
Lecture Notes in Computer Science,
2134, pp 118-133, Springer-Verlag.
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Lee, T.S., Nguyen, M. (2001). Dynamics of subjective contour
formation in early visual cortex. Proceedings of the National
Academy of Sciences, U.S.A. , 98(4) 1907-1911.
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Romero, R.D., Lee T.S. (2001) Estimation of temporal kernels for
cells in V1. Proceedings of Annual Conference in
Computational Neuroscience .
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Lee, T.S., Yu, S. (2000)
An information-theoretic framework for
understanding saccadic behaviors.
Advances in Neural
Information Processing Systems 12: 834-840 ,
Ed. S.A. Solla, T.K. Leen, K-R. Muller.
MIT Press.
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Yu, S., Lee T.S. (2000) What V1 neurons tell us about
saccadic suppression.
Neurocomputing
Elsevier Press, 32-33, 271-277.
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Cassidente, E., Yan X.G, Lee T.S. (2000) A Bayesian decision approach
to evaluate local and contextual information from spike trains.
Neurocomputing , 32-33, 1013-1020
Elsevier Press.
- Yan, X.G. and Lee, T.S. (2000).
Informatics of spike trains in neuronal ensemble.
Proceedings of the International Conference of Biomedical Engineering
.
5978-655226, 1-6.
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Lee, T.S., D. Mumford, R. Romero and V.A.F. Lamme (1998).
The role of primary visual cortex in higher level vision.
Vision Research 38, 2429-2454.
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Lee, T.S., D. Mumford, S.C. Zhu and V.A.F. Lamme (1997).
The role of V1 in shape representation.
Proceedings of the Annual Conference of
Computational Neuroscience 96 .
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Lee, T.S. (1996).
Image representation using 2D Gabor wavelets.
IEEE Transection of Pattern Analysis and Machine Intelligence.
Vol. 18, No. 10, October, 959-971.
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Lee, T.S. (1995).
Neurophysiological evidence for image segmentation and medial axis
computation in primate V1.
Computational Neuroscience .
(Ed. Jim Bower). Academic Press. 373-378.
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Lee, T.S. (1995).
A Bayesian framework for understanding texture segmentation
in the primary visual cortex.
Vision Research 35, 2643-2657..
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Zhu, S.C., Lee, T.S., and Yuille, A. (1995).
Region competition: unifying snakes, region growing and MDL for
image segmentation.
Proceedings of the Fifth International Conference
in Computer Vision 416-425.
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Lee, T.S. (1994).
Representational strategy in the visual cortex.
Proceedings of First International Conference in Image Processing,
Texas,1994. 2: 590-595.
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Lee, T.S., D. Mumford, A. Yuille (1992).
Texture segmentation by minimizing
vector-valued energy functionals: the coupled-membrane model.
Lecture Notes in Computer Science 588, 165-173,
Springer-Verlag.
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