Aleix  

The Ohio State University

 
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205 Dreese Laboratory
Department of Electrical and Computer Engineering
The Ohio State University
2015 Neil Avenue
Columbus, OH 43210 USA

E-mail: aleix@ece.osu.edu

Phone: (614) 688-8225 or (614) 292-2571


Short Bio

Aleix M. Martinez is an associate professor in the Department of Electrical and Computer Engineering at The Ohio State University (OSU), where he is the founder and director of the the Computational Biology and Cognitive Science Lab. He is also affiliated with the Department of Biomedical Engineering and to the Center for Cognitive Science where he is a member of the executive committee. Prior to joining OSU, he was affiliated with the Electrical and Computer Engineering Department at Purdue University and with the Sony Computer Science Lab. He has served as an associate editor of IEEE Transactions on Pattern Analysis and Machine Intelligence, IEEE Transaction on Affective Computing, Computer Vision and Image Understanding, and Image and Vision Computing. He has been an area chair for many top conferences and is a Program co-Chair for CVPR 2014 in his hometown, Columbus, OH. He is also a member of the Cognition and Perception study section at NIH and has served as reviewer for numerous NSF, NIH as well as other national and international funding agencies.

Dr. Martinez research has been covered by numerous national media outlets, including CNN, The Huffington Post, Time Magazine, CBS News and NPR, as well as intrernational outets, including The Guardian, Spiegel, El Pais and Le Monde. A selection of recent stories is available here.

CVPR 2014, Columbus, OH, June 23-28, 2014

 Tutorials and seminars

Post-doctoral Researcher Position (computer vision)
CBCSL is looking for a post-doc to work in fundamantal problems in computer vision and pattern recognition. The work requires the design of algorithms to aid current reserch projects in the lab. The post-doc will also be involved with the managment of the lab and graduate student work. The candidate must have a proven research record with publications in the top journals or conferences -- PAMI, IJCV, JMLR, CVPR, ICCV, ECCV, NIPS.

Post-doctoral Researcher Position (face perception)
CBCSL is looking for a post-doc to work in the area of computational modeing of face perception. A strong background in vision, cognitive science and statistics is required. We will consider PhDs from cognitive science, psychology, neuroscience and computer vision and machine learning. The ideal candidate has previous publications in the top journals and conferences in the area.

 
Publications
 
Journal Publications

Compound Facial Expressions of Emotion
S. Du, Y. Tao, A.M. Martinez
Proceedings of the National Academy of Sciences 111 (15) E1454-E1462, 2014
PDF             
Web
             Video

Discriminant Features and Temporal Structure of Nonmanuals in American Sign Language
C.F. Benitez-Quiroz, K. Gokgoz, R.B. Wilbur, A.M. Martinez
PLoS ONE 9(2): e86268, 2014
PDF             Web             Elan code             ASL database             

Multiobjective Optimization for Model Selection in Kernel Methods in Regression
D. You, C.F. Benitez-Quiroz, A.M. Martinez
IEEE Transactions on Neural Networks and Learning Systems, 2014
Web            Matlab code 

Minimizing Nearest Neighbor Classification Error for Nonparametric Dimensionality Reduction
W. Bian, T. Zhou, A.M. Martinez, G. Baciu, D. Tao
IEEE Transactions on Neural Networks and Learning Systems, 2014
Web

Salient and Non-salient Fiducial Detection Using a Probabilistic Graphical Model
C.F. Benitez-Quiroz, S. Rivera, P.F.U. Gotardo, A.M. Martinez
Pattern Recognition, 2013
PDF

Wait, are you sad or angry? Large exposure time differences required for the categorization of facial expressions of emotion
S. Du and A.M. Martinez
Journal of Vision, 13(4), 2013
PDF

A Model of the Perception of Facial Expressions of Emotion by Humans: Research overview and perspectives
A.M. Martinez and S. Du
Journal of Machine Learning Research, Vol. 13, pp.1589-1608, 2012
PDF

Learning Deformable Shape Manifolds
S. Rivera and A.M. Martinez
Pattern Recognition, Vol. 45, No. 4, pp. 1792–1801, 2012
PDF

The Resolution of Facial Expressions of Emotion
S. Du and A.M. Martinez
Journal of Vision, 11(13):24, 1–13, 2011
PDF

Computing Smooth Time-Trajectories for Camera and Deformable Shape in Structure from Motion with Occlusion
P. Gotardo and A.M. Martinez
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 33, No. 10, pp. 2051-2065, 2011
PDF             Demos and Matlab Code

Kernel Optimization in Discriminant Analysis
D. You, O. Hamsici and A.M. Martinez
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 33, No. 3, 2011
PDF              Supplementary Documentation

Features versus Context: An approach for precise and detailed detection and delineation of faces and facial features
L. Ding and A.M. Martinez
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 32, No. 11, pp 2022-2038, 2010
PDF              Supplementary Documentation               Manual & Automatic Annotations

A Computational Shape-based Model of Anger and Sadness Justifies a Configural Representation of Faces
D. Neth and A.M. Martinez
Vision Research, Vol. 50, pp. 1693–1711, 2010
Web              CogFest handouts 

Rigid Structure from Motion from a Blind Source Separation Perspective
J. Fortuna and A.M. Martinez
International Journal of Computer Vision, Vol. 88, No. 3, pp. 404-424, 2010
PDF

Rotation Invariant Kernels and Their Application to Shape Analysis
O.C. Hamsici and A.M. Martinez
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 31, No. 11, pp. 1985-1999, 2009
PDF

Emotion Perception in Emotionless Face Images Suggests a Norm-based Representation
D. Neth and A.M. Martinez
Journal of Vision, Volume 9, Number 1, Article 5, Pages 1-11, 2009
PDF                Short review in AP&P

Low-Rank Matrix Fitting Based on Subspace Perturbation Analysis with Applications to Structure from Motion
H. Jia and A.M. Martinez
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 31, No. 4, 2009
PDF                 Supplementary Documentation                 Demo

Modelling and Recognition of the Linguistic Components in American Sign Language
L. Ding and A.M. Martinez
Image and Vision Computing, Vol. 27, No. 12, pp. 1826-1844, 2009
PDF

Can low level image differences account for the ability of human observers to discriminate facial identity?
D.A. Wilbraham, J.C. Christensen, A.M. Martinez and J.T. Todd
Journal of Vision, Volume 8, Number 15, Article 5, Pages 1-12, 2008
PDF

Who Is LB1? Discriminant Analysis for the Classification of Specimens
A.M. Martinez and O.C. Hamsici
Pattern Recognition, Vol. 41, pp. 3436-3441, 2008
PDF                 Matlab Code

Using the information embedded in the testing sample to break the limits caused by the small sample size in microarray-based classification
M. Zhu and A.M. Martinez
BMC Bioinformatics, 9:280, 2008
PDF

Bayes Optimality in Linear Discriminant Analysis
O.C. Hamsici and A.M. Martinez
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 30, No. 4, pp. 647-657, 2008
PDF                 Matlab Code

Pruning Noisy Bases in Discriminant Analysis
M. Zhu and A.M. Martinez
IEEE Transactions Neural Networks, Vol. 19, No. 1, pp. 148-157, 2008
PDF                 Matlab Code

Spherical-Homoscedastic Distributions: The equivalency of spherical and Normal distributions in classification
O.C. Hamsici and A.M. Martinez
Journal of Machine Learning Research, 8(Jul):1583-1623, 2007
PDF                 Matlab Code

Subclass Discriminant Analysis
M. Zhu and A.M. Martinez
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 28, No. 8, pp. 1274-1286, 2006
PDF                 Matlab Code

A Weighted Probabilistic Approach to Face Recognition from Multiple Images and Video Sequences
Y. Zhang and A.M. Martinez
Image and Vision Computing, Vol. 24, No. 6, pp. 626-638, 2006
PDF                 Demo

Where Are Linear Feature Extraction Methods Applicable?
A.M. Martinez and M. Zhu
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 27, No. 12, pp. 1934-1944, 2005.
PDF

Robust Motion Estimation under Varying Illumination
Y. Kim, A.M. Martinez and A.C. Kak
Image and Vision Computing, vol. 23, No. 4, pp. 365-375, 2005
PDF

On Combining Graph-Partitioning with Non-Parametric Clustering for Image Segmentation
A.M. Martinez, P. Mittrapiyanuruk and A.C. Kak
Computer Vision and Image Understanding, Vol. 95, No. 1, pp. 72-85, 2004
PDF

Matching Expression Variant Faces
A.M. Martinez
Vision Research, Vol. 43, Issue 9, pp. 1047-1060, 2003
PDF

Recognizing Imprecisely Localized, Partially Occluded and Expression Variant Faces from a Single Sample per Class
A.M. Martinez
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 24, No. 6, pp. 748-763, 2002
PDF                 Citations

Clustering in Image Space for Place Recognition and Visual Annotations for Human-robot Interaction
A.M. Martinez and J. Vitria.
IEEE Transactions on System Man and Cybernetics B, Vol. 31, No. 5, pp. 669-682, 2001
PDF                 Demo

PCA versus LDA
A.M. Martinez and A.C. Kak
IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 23, No. 2, pp. 228-233, 2001
PDF                 Citations

Learning Mixture Models Using a Genetic Version of the EM Algorithm
A.M. Martinez and J. Vitria
Pattern Recognition Letters 21, pp. 759-769, 2000
PDF                 Code

A New Approach to Object-Related Image Retrieval
A.M. Martinez and J.R. Serra
Journal of Visual Languages and Computing Vol.11, No. 3, pp. 345-363, 2000
PDF

 

Conference Publications

Learning Spatially-Smooth Mappings in Non-Rigid Structure from Motion
P.F.U. Gotardo, O.C. Hamsici and A.M. Martinez
Proceedings of European Conference on Computer Vision (ECCV), Florence (Italy), 2012
PDF                Demos

Automatic Selection of Eye Tracking Variables in Visual Categorization for Adults and Infants
S. Rivera, C. Best, H. Yim, A.M. Martinez, V./ Sloutsky, D.B. Walther
Proceedings of the 34th Annual Conference of the Cognitive Science Society, 2012

PDF               Web pages of the project

Kernel Non-Rigid Structure from Motion
P.F.U. Gotardo and A.M. Martinez
Proceedings of the IEEE International Conference on Computer Vision (ICCV), Barcelona (Spain), 2011
PDF                Demos

Deciphering the Face
A.M. Martinez
Proceedings of the IEEE Computer Vision and Pattern Recognition (CVPR), workshop,Colorado Springs (CO), 2011

PDF

Non-Rigid Structure from Motion with Complementary Rank-3 Spaces
P.F.U. Gotardo and A.M. Martinez
Proceedings of the IEEE Computer Vision and Pattern Recognition (CVPR), Colorado Springs (CO), 2011
PDF
               Demos

Bayes Optimal Kernel Discriminant Analysis
D. You and A.M. Martinez
Proceedings of the IEEE Computer Vision and Pattern Recognition (CVPR), San Francisco (CA), 2010
PDF

Active Appearance Models with Rotation Invariant Kernels
O.C. Hamsici and A.M. Martinez
Proceedings of IEEE International Conference on Computer Vision (ICCV), Kyoto (Japan), 2009

PDF                 Matlab Code

Support Vector Machines in Face Recognition with Occlusions
H. Jia and A.M. Martinez
Proceedings of the IEEE Computer Vision and Pattern Recognition (CVPR), Miami (FL), 2009
PDF

Face Recognition with Occlusions in the Training and Testing Sets
H. Jia and A.M. Martinez
Proceedings of the IEEE International Conference on Automatic Face and Gesture Recognition, 2008
PDF

Precise Detailed Detection of Faces and Facial Features
L. Ding and A.M. Martinez
Proceedings of IEEE Computer Vision and Pattern Recognition (CVPR), Anchorage (AK), 2008
PDF

Spherical-homoscedastic Shapes
O.C. Hamsici and A.M. Martinez
Proceedings of IEEE International Conference on Computer Vision (ICCV), Rio de Janeiro (Brazil), 2007
PDF

Sparse Kernels for Bayes Optimal Discriminant Analysis
O.C. Hamsici and A.M. Martinez
Proceedings of IEEE Computer Vision and Pattern Recognition, Workshop (CVPR), Minneapolis (MN), 2007  [Best paper award]
PDF                 Matlab Code               

Recovering the Linguistic Components of the Manual Signs in American Sign Language
L. Ding and A.M. Martinez
Proceedings of IEEE Conference on Advanced Video and Signal-based Surveillance (AVSS), London (UK), 2007
PDF                 Demo

Selecting Principal Components in a Two-Stage LDA Algorithm
M. Zhu and A.M. Martinez
Proceedings of IEEE Conference on Computer Vision and Patter Recognition (CVPR), New York (NY), 2006
PDF                 Matlab Code

Three-dimensional Reconstruction of Shape and Motion for the Analysis of American Sign Language
L. Ding and A.M. Martinez
Proceedings of the IEEE Computer Vision and Pattern Recognition, Workshop (CVPR) New York (NY), 2006
PDF                 Demo

A Blind Source Separation Approach to Structure from Motion
J. Fortuna and A.M. Martinez
Proceedings of the Third International Symposium on 3D Data Processing, Visualization and Transmission, Chapel Hill (NC), 2006
PDF

Perturbation Estimation of the Subspaces for Structure from Motion with Noisy and Missing Data
H. Jia, J. Fortuna and A.M. Martinez
Proceedings of the Third International Symposium on 3D Data Processing, Visualization and Transmission, Chapel Hill (NC), 2006  [NSF award]
PDF

Evaluation of the Modeling of Local Areas and Errors of Localization in FRGC’05
O.C. Hamsici and A.M. Martinez
Proceedings of the IEEE Computer Vision and Pattern Recognition, Workshop (CVPR), 2005
PDF

A Local Approach for Robust Optical Flow Estimation under Varying Illumination
Y. Kim, A.M. Martinez and A.C. Kak
Proceedings of British Machine Vision Conference (BMVC), 2004
PDF

Recognition of Expression Variant Faces Using Weighted Subspaces
Y. Zhang and A.M. Martinez
Proceedings of International Conference on Pattern Recognition (ICPR), Cambridge (UK),2004
PDF

Optimal Subclass Discovery for Discriminant Analysis
M. Zhu and A.M. Martinez
Proceedings of IEEE Workshop on Learning in Computer Vision and Pattern Recognition (LCVPR), 2004
PDF

From Static to Video: Face Recognition Using a Probabilistic Approach
Y. Zhang and A.M. Martinez
Proceedings of IEEE Workshop on Face Processing in Video (FPIV), 2004
PDF

Template-based Recognition of Static Sitting Postures
M. Zhu, A.M. Martinez and H.Z. Tan
Proceedings of IEEE Computer Vision and Pattern Recognition for Human Computer Interaction (CVPR-HCI), 2003
PDF

Recognizing Expression Variant Faces from a Single Sample Image per Class
A.M. Martinez
Proceedings of IEEE Computer Vision and Pattern Recognition (CVPR), 2003
PDF

Purdue ASL Database for the Recognition of American Sign Language
A.M. Martinez, R.B. Wilbur, R. Shay and A.C. Kak
Proceedings of IEEE International Conference on Multimodal Interfaces (ICMI), 2002
PDF  

Physical Correlates of Prosodic Structure in American Sign Language
R.B. Wilbur and A.M. Martinez,
Proceedings of the Chicago Linguistics Society (CLS), 2002
PDF

Recognition of Partially Occluded and/or Imprecisely Localized Faces Using a Probabilistic Approach
A.M. Martinez
Proceedings of IEEE Computer Vision and Pattern Recognition (CVPR), 2000
PDF

Semantic Access of Frontal Face Images: The expression-invariant problem
A.M. Martinez
Proceedings of IEEE Workshop on Content-Based Access of Images and Video Libraries, 2000
PDF

Face Image Retrieval Using HMMs
A.M. Martinez
Proceedings of IEEE CVPR'99 (Workshop on Content-Based Access of Images and Video Libraries), 1999
PDF  

Semantic Access to a Database of Images: An approach to object-related image retrieval
A.M. Martinez and J.R. Serra.
Proceedings of IEEE Multimedia Systems (ICMCS'99), 1999
PDF

 

Book Chapters

Face Recognition, Overview
A.M. Martinez
Encyclopedia of Biometric Recognition, Springer, 2009.

Face Recognition, Component-based
O.C. Hamsici and A.M. Martinez
Encyclopedia of Biometric Recognition, Springer, 2009.

A Biologically Inspired Model for the Simultaneous Recognition of Identity and Expression
D. Neth and A.M. Martinez
Biometrics: Theory, Methods, and Applications (Eds. N.V. Boulgouris, E. Micheli-Tzanakou & K.N. Plataniotis), Wiley, 2009.
PDF

Subset Modeling of Face Localization Error, Occlusion, and Expression
A.M. Martinez and Y. Zhang
In Face Processing: Advance Modeling and Methods (Eds. R. Chellappa & W. Zhao), Academic Press, 2005.
PDF

Physical Correlates of Prosodic Structure in American Sign Language
R.B. Wilbur and A.M. Martinez
In Chicago Linguistic Society, Vol. 38, 2002.
PDF

Dimensionality Reduction for Face Recognition
A.M. Martinez and J. Vitria
In Advances in Visual Form Analysis (Eds. C.Arcelli, L.P. Cordella and G.S. di Baja), World Scientific, 1997.

Designing and Implementing Real Walking Agents Using Virtual Environments
A.M. Martinez and J. Vitria
In Applications of Artificial Intelligence (Eds. N.J. Manede and C. Pietro-Ferreira), Scitec Publications Ltd., 1996.