Pulications

2009

Boosting Encoded Dynamic Features for Facial Expression Recognition
Peng Yang, Qingshan Liu, and Dimitris N Metaxas
Pattern Recognition Letters 30(2): 132-139 (2009)

Atrioventricular Blood Flow Simulation Based on Patient-Specific Data
Viorel Mihalef, Dimitris N. Metaxas, Mark Sussman, Vassilios Hurmusiadis, Leon Axel
FIMH 2009: 386-395

Learning with structured sparsity
Junzhou Huang, Tong Zhang, Dimitris N. Metaxas
ICML 2009: 53

Simulation of two-phase flow with sub-scale droplet and bubble effects
Viorel Mihalef, Dimitris N. Metaxas, Mark Sussman
Comput. Graph. Forum 28(2): 229-238 (2009)


2008

Similarity Features for Facial Event Analysis
Peng Yang, Qingshan Liu, Dimitris N. Metaxas
European Conf. Computer Vision (ECCV), 2008.

Facial Expression Recognition Based on Dynamic Binary Patterns
Peng Yang, Qingshan Liu, Xinyi Cui, and Dimitris N. Metaxas
Int'l Conf. Computer Vision and Pattern Recognition (CVPR), 2008.

Simultaneous Image Transformation and Sparse Representation Recovery
Junzhou Huang, Xiaolei Huang, and Dimitris N. Metaxas
Int'l Conf. Computer Vision and Pattern Recognition (CVPR), 2008.

Identifying Regional Cardiac Abnormalities from Myocardial Strains Using Spatio-Temporal Tensor Analysis
Zhen Qian, Qingshan Liu, Dimitris N. Metaxas, and Leon Axel
Int’l Conf. Medical Image Computing And Computer Assisted Intervention (MICCAI) 2008.

Tag Separation in Cardiac tagged MRI
Junzhou Huang, Zhen Qian, Xiaolei Huang, Dimitris Metaxas, and Leon Axel
Int’l Conf. Medical Image Computing And Computer Assisted Intervention (MICCAI) 2008.

Active Volume Models with Probabilistic Object Boundary Prediction Module
Tian Shen, Yaoyao Zhu, Xiaolei Huang, Junzhou Huang, Dimitris Metaxas, and Leon Axel
Int’l Conf. Medical Image Computing And Computer Assisted Intervention (MICCAI) 2008.

Lennard-Jones Force Field for Geometric Active Contour
Zhenglong Li, Qingshan Liu, Hanqing Lu, and Dimitris N. Metaxas
Int’l Conf. Pattern Recognition, 2008.

A Novel Learning Based Segmentaion Methods for Rodent Brain Strutures from MR Studies
Jinghao Zhou, Sukmoon Chang, Qingshan Liu, Vasilios Boronikolas, Panayotis Thanos, and Dimitris N. Metaxas
Int'l Symposium on Biomedical Imaging (ISBI), 2008.


2007

Boosting Coded Dynamic Features for Facial Action Units and Facial Expression Recognition
Peng Yang, Qingshan Liu, and Dimitris. N. Metaxas
Int’l Conf. Computer Vision and Pattern Recognition (CVPR), 2007.

A Component Based Deformable Model for Generalized Face Alignment
Yuchi Huang, Qingshan Liu, and Dimitris.N. Metaxas
Int’l Conf. Computer Vision (ICCV), 2007.

Optimization and Learning for Registration of Moving Dynamic Textures
Junzhou Huang, Xiaolei Huang, and Dimitris Metaxas
Int’l Conf. Computer Vision (ICCV), 2007.

A Unified Framework of Subspace and Distance Metric Learning for Face Recognition
Qingshan Liu and Dimitris. N. Metaxas
Int’l Conf. Computer Vision Workshop on AMFG, 2007.

Registration of Lung Tissue between Fluoroscope and CT Images: Determination of Beam Gaiting Parameters in Radiotherapy
Sukmoon Chang, Jinghao Zhou, Qingshan Liu, Dimitris N. Metaxas, ect
Proc. of int’l Conf. Medical Image Computing And Computer Assisted Intervention (MICCAI) 2007.

Adaptive Metamorphs Model for 3D Medical Image Segmentation
Junzhou Huang1, Xiaolei Huang2, Dimitris Metaxas1, and Leon Axel3
Proc. of int’l Conf. Medical Image Computing And Computer Assisted Intervention (MICCAI) 2007.

Dynamic Texture Based hear Localization And Segmentation in 4D Cardiac Images
Junzhou Huang, Xiaolei Huang, Dimitris Metaxas, and Leon Axel
ISBI 2007

Face Mis-alignment Analysis by Multiple-instance Subspace,
Zhiguo Li, Qingshan Liu, and Dimitris N. Metaxas
Asian Conf. Computer Vision (ACCV), 2007.


2006

3D Tumor Shape Reconstruction From 2D Bioluminescence Images
Junzhou Huang, Xiaolei Huang, Dimitris Metaxas, and Debarata Banerjee
ISBI 2006

3D Tumor Shape Reconstruction from 2D Bioluminescence Images and Registration with CT Images
Junzhou Huang, Xiaolei Huang, Dimitris Metaxas, and Debarata Banerjee
MIAAB 2006


2005

Blob Analysis of the Head and Hands: A Method for Deception Detection and Emotional State Identification
S. Lu, G. Tsechpenakis, D. Metaxas, M. L. Jensen, J. Kruse
Hawaii International Conference on System Sciences, Big Island, Hawaii, January, 2005.

An Approach for Intent Identification by Building on Deception Detection
J. Burgoon, M. Adkins, J. Kruse, M. L. Jensen, T. Meservy, S. Lu, G. Tsechpenakis, D. Metaxas
Hawaii International Conference on System Sciences, Big Island, Hawaii, January 2005.

Deception Detection through Automatic Unobtrusive Analysis of Nonverbal Behavior,"
T. O. Meservy, M. L. Jensen, J. Kruse, D. P. Twitchell, G. Tsechpenakis,J. K. Burgoon, D. N. Metaxas, J. F. Nunamaker Jr., 
IEEE Intelligent Systems, Special Issue on Artificial Intelligence for National and Homeland Security, to appear Sep/Oct 2005.

Learning-based Dynamic Coupling of Discrete and Continuous Trackers,
G. Tsechpenakis, D. Metaxas, and C. Neidle, 
IEEE International Workshop on modeling People and Human Interaction (PHI'05), in conjunction with ICCV'05, Beijing, China, October 2005.

Discovery of Informative Unlabeled Data for Improved Learning,"
W. He, X. Huang, G. Tsechpenakis, D. Metaxas, and C. Neidle, 
IEEE International Workshop on modeling People and Human Interaction (PHI'05), in conjunction with ICCV'05, Beijing, China, October 2005.

HMM-based Deception Recognition from Visual Cues,"
G. Tsechpenakis, D. Metaxas, M. Adkins, J. Kruse, M. Jensen, T. Meservy, D. Twitchell, A. Deokar and J. Nunamaker, 
IEEE International Conference on Multimedia & Expo (ICME'05), Amsterdam, The Netherlands, July 2005.

Analysis and Recognition of Nonverbal Behavior Using 2D Visual Cues and Machine Learning,
G. Tsechpenakis, D. Metaxas and S. Lu, 
Project Panel: Machine Learning Technology for Recognition and Analysis of Suspicious Behavior from Human Gestures and Movement, 2nd Conference of the International Society for Gesture Studies (ISGS), Interacting Bodies, Lyon, France, June 2005.


2004

Learning Coupled Prior Shape and Appearance Models for Segmentation
X. Huang, Z. Li, D. Metaxas
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2004), Saint-Malo, France, September, 2004.

A Snake Model for Object Tracking in Natural Sequences
G. Tsechpenakis, K. Rapantzikos, N. Tsapatsoulis and S. Kollias
Elsevier, Signal Processing: Image Communication, Vol. 19(3), pp. 219-238, March 2004.
Most requested article January-August 2004

Intelligent Visual Descriptor Extraction from Video Sequences
P. Tzouveli, G. Andreou, G. Tsechpenakis, Y. Avrithis and S. Kollias
Lecture Notes in Computer Science - Adaptive Multimedia Retrieval, Springer-Verlag, Vol. 3094, pp. 132-146, 2004.

Rule-driven Object Tracking in Clutter and Partial Occlusion with Model-based Snakes
G. Tsechpenakis, K. Rapantzikos, N. Tsapatsoulis, S. Kollias
EURASIP Journal on Applied Signal Processing, Special Issue on Object-based Semantic Image and Video Analysis, vol. 2004(6), pp. 841-860, June 2004.

Probabilistic Boundary-Based Contour Tracking with Snakes in Natural Cluttered Video Sequences
G. Tsechpenakis, N. Tsapatsoulis and S. Kollias
International Journal of Image and Graphics (IJIG): Special Issue on Deformable Models for Image Analysis and Pattern Recognition, Vol. 4(3), pp. 469-498, 2004.

Pulmonary Micronodule Detection from 3D Chest CT
S. Chang, H. Emoto, D. Metaxas, L. Axel
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2004), Saint-Malo, France, September, 2004.

Patient-Specific Analysis of Left Ventricular Blood Flow
T. N. Jones, D. Metaxas
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2004), Saint-Malo, France, September, 2004.

High Resolution Acquisition, Learning and Transfer of Dynamic 3-D Facial Expressions
Y. Wang, X. Huang, C.-S. Lee, S. Zhang, Z. Li, D. Samaras, D. Metaxas, A. Elgammal, P. Huang
Annual Conf. of the European Association for Computer Graphics, Eurographics’04, Grenoble, France, August, 2004.

A Hybrid Face Recognition Method using Markov Random Fields
R. Huang, V. Pavlovic, D. Metaxas
International Conference on Pattern Recognition (ICPR’04), Cambridge, UK, August, 2004.

A Graphical Model Framework for Coupling MRFs and Deformable Models
R. Huang, V. Pavlovic, D. Metaxas
CVPR’04, Washington, DC, USA, June, 2004.

Cardiac Segmentation from MRI-Tagged and CT Images
D. Metaxas, T. Chen, X. Huang, L. Axel
8th WSEAS International Conf. on Computers, special session on Imaging and Image Processing of Dynamic Processes in biology and medicine & WSEAS Transactions, Athens, Greece, July, 2004

MetaMorphs: Deformable Shape and Texture Models
X. Huang, D. Metaxas, T.Chen
CVPR’04, Washington, D.C., June, 2004.

Hybrid Image Registration based on Configural Matching of Scale-Invariant Salient Region Features
X. Huang, Y. Sun, D. Metaxas, F. Sauer, C. Xu
IEEE Workshop on Image and Video Registration (IVR’04) in conjunction with CVPR’04, Washington D.C., July, 2004.

A Hierarchical Framework for High Resolution Facial Expression Tracking
X. Huang, S. Zhang, Y. Wang, D. Metaxas, D. Samaras
IEEE Workshop on Articulated and Nonrigid Motion (ANM’04) in conjunction with CVPR’04, Washington D.C., June, 2004.


2003

Statistical Cue Integration in DAG Deformable Models
S. K. Goldenstein, C. Vogler, D. Metaxas
IEEE PAMI, Vol. 25 (7), July 2003.

Scan-Conversion Algorithm for Ridge Point Detection on Tubular Objects
S. Chang, D. Metaxas, L. Axel
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2003), Montréal, Canada, November, 2003

Left Ventricle Composite Material Model for Stress-Strain Analysis
Z. Hu, D. Metaxas, L. Axel
Lecture Notes in Computer Science, Springer-Verlag Heidelberg, ISSN: 0302-9743, Volume 2673, pp. 218 – 229, 2003.

Handshapes and Movements: Multiple-Channel American Sign Language Recognition
C. Vogler, D. Metaxas
Gesture-Based Communication in Human-Computer Interaction: 5th International Gesture Workshop, GW 2003, Genova, Italy, April, 2003.

Scan-Conversion Algorithm for Ridge Point Detection on Tubular Objects
S. Chang, D. Metaxas, L. Axel
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2003), Montréal, Canada, November, 2003.

Establishing Local Correspondences towards Compact Representations of Anatomical Structures
X. Huang, N. Paragios, D. Metaxas
Medical Image Computing & Computer Assisted Intervention (MICCAI’03), Montreal, Canada, November, 2003.

Adaptive Rule-based Recognition of Events in Video Sequences
V. Tzouvaras, G. Tsechpenakis, G. Stamou and S. Kollias
IEEE International Conference on Image Processing (ICIP), Barcelona, Spain, September 2003.

Intelligent Visual Descriptor Extraction from Visual Sequences
P. Tzouveli, G. Andreou, G. Tsechpenakis, Y. Avrithis and S. Kollias
International Workshop on Adaptive Multimedia Retrieval, KI 2003, Hamburg, Germany, September 2003.

Object Tracking in Clutter and Partial Occlusion through Rule-driven Utilization of Snakes
G. Tsechpenakis, K. Rapatzikos, N. Tsapatsoulis and S. Kollias
IEEE International Conference on Multimedia & Expo, Baltimore, USA, July 2003.


2002

Adjusting Shape Parameters using Model-Based Optical Flow Residuals
D. DeCarlo, D. Metaxas
IEEE PAMI, Vol. 24 , Issue 6, June, 2002.

LV-RV Shape Modeling Based on a Blended Parameterized Model
K. Park, D. Metaxas, L. Axel
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2002), Tokyo, Japan, September, 2002.

In-vivo Strain and Stress Estimation of the Left Ventricle from MRI Images
Z. Hu, D. Metaxas, L. Axel
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2002), Tokyo, Japan, September, 2002.

Hybrid System Models of Navigation Strategies for Games and Animations
E. Aaron, F. Ivancic, D. Metaxas
Computation and Control: 5th International Workshop, HSCC 2002, Stanford, CA, USA, March, 2002.

A Hybrid Dynamical Systems Approach to Intelligent Low-Level Navigation
E. Aaron, H. Sun, F. Ivancic, D. Metaxas
Computer Animation 2002, Geneva, Switzerland, June, 2002.

From Visual Input to Modeling Humans
D. Metaxas
Computer Animation 2002, Geneva, Switzerland, June, 2002.

Considering Hierarchical Hybrid Systems for Intelligent Animated Agents
E. Aaron, D. Metaxas
Innovative Concepts for Agent-Based Systems: First International Workshop on Radical Agent Concepts, WRAC 2002, McLean, VA, USA, January, 2002.

Automated Segmentation of the Left and Right Ventricles in 4D Cardiac SPAMM Images
Montillo, D. Metaxas, L. Axel
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2002), Tokyo, Japan, September, 2002.

Algorithmic issues in modeling motion
P. K. Agarwal, P. Koehl, M. Lin, D. Manocha, D. Metaxas, B. Mirtich, D. Mount, S. Muthukrishnan, D. Pai, E. Sacks, J. Snoeyink, L. J. Guibas, S. Suri, O. Wolefson, H. Edelsbrunner, J. Erickson, M. Isard, S. Har-Peled, J. Hershberger, C. Jensen, L. Kavraki
ACM Computing Surveys (CSUR), Vol. 34 , Issue 4, pp. 550 – 572, December 2002.

Knowledge - Assisted Video Analysis and Object Detection
G. Tsechpenakis, G. Akrivas, G. Andreou, G. Stamou and S. Kollias
EUNITE 2002: European Symposium on Intelligent Technologies, Hybrid Systems and their Implementation on Smart Adaptive Systems, Albufeira, Portugal, September 2002.


2001

Affine Arithmetic Based Estimation of Cue Distributions in Deformable Model Tracking
S. Goldenstein, C. Vogler, D. Metaxas
CVPR’01, Kauai, Hawaii, December, 2001.

Scalable nonlinear dynamical systems for agent steering and crowd simulation
S. Goldenstein, M. Karavelas, D. Metaxas, L. Guibas, E. Aaron, A. Goswami
Computers & Graphics, Vol. 25, Issue 6 , pp. 983-998, December 2001.

Methods for Modeling and Predicting Mechanical Deformations of the Breast Under External Perturbations
F. S. Azar, D. Metaxas, M. D. Schnall
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2001), Utrecht, The Netherlands, October, 2001.

Hybrid Segmentation of Anatomical Data
C. Imielinska, D. Metaxas, J. Udupa, Y. Jin, T. Chen
Medical Image Computing and Computer-Assisted Intervention (MICCAI 2001),Utrecht, The Netherlands, October, 2001.

Automating gait generation
H. C. Sun, D. Metaxas
SIGGRAPH 2001: Los Angeles, CA, USA, August, 2001.

A Framework for Reasoning about Animation Systems
E. Aaron, D. Metaxas, F. Ivancic, O. Sokolsky
Intelligent Virtual Agents: Third International Workshop, IVA 2001, Madrid, Spain, September, 2001.

A Multiresolution Approach for Main Mobile Object Localization in Video Sequences
G. Tsechpenakis, Y. Xirouhakis and A. Delopoulos
International Workshop on Very Low Bitrate Video Coding (VLBV01), Athens, Greece, October 2001.


2000

Variable Albedo Surface Reconstruction from Stereo and Shape from Shading
D. Samaras, D. Metaxas, P. Fua, Y. G. Leclerc
CVPR00, Hilton Head, South Carolina, June, 2000

Modeling water for computer animation
N. Foster, D. Metaxas
Communications of the ACM, Vol. 43 , Issue 7, pp. 60 – 67, July 2000.

Dynamic Deformable Models for Enhanced Haptic Rendering in Virtual Environments
R. Ramanathan, D. Metaxas
IEEE Virtual Reality 2000 Conference, New Brunswick, NJ, USA, March, 2000.

Animation of Human Locomotion Using Sagittal Elevation Angles
H. C. Sun, D. Metaxas
Pacific Graphics 2000 (PG'00), Hong Kong, China, October, 2000.

A framework for motion recognition with applications to American sign language and gait recognition
C. Vogler, H. Sun, D. Metaxas
Workshop on Human Motion (HUMO'00), Austin, Texas, December, 2000.

Optical Flow Constraints on Deformable Models with Applications to Face Tracking
D. DeCarlo, D. Metaxas
International Journal of Computer Vision, Vol. 38(2), pp. 99-127, July, 2000.

Model-Based Estimation of 3D Human Motion
I. Kakadiaris, D. Metaxas
IEEE PAMI, Vol. 22 (12), December, 2000.

Main Mobile Object Detection and Localization in Video Sequences
G. Tsechpenakis, Y. Xirouhakis and A. Delopoulos
The Fourth International Conference on Visual Information Systems, Lyon, France, November 2000.


1999

Combining Information using Hard Constraints
D. DeCarlo, D. Metaxas
CVPR’99, Ft. Collins, CO, USA, June, 1999.

Dynamic Simulation for Zero-Gravity Activities
G. Huang, S. Huh, A. Goswami, D. Metaxas, N. Badler
International Space Human Factors Workshop, Tokyo, Japan, June, 1999.

User Choices for Efficient 3D Motion and Shape Extraction from Orthographic Projections
Y. Xirouhakis, G. Tsechpenakis and A. Delopoulos,
The Sixth IEEE International Conference on Electronics, Circuits and Systems (ICECS99), Pafos, Cyprus, September 1999.

2D Motion Estimation in the Extraction of 3D Motion and Structure of Rigid Objects
G. Tsechpenakis, Y. Xirouhakis and A. Delopoulos,
International Workshop on Synthetic-Natural Hybrid Coding and 3D Imaging (IWSNHC3DI'99), Santorini, Greece, September 1999.

Verification Report of Core Experiment on Fast Block-Matching Motion Estimation using Advanced Diamond Zonal Search with Embedded Radar
G. Tsechpenakis, Y. Avtithis and S. Kollias
International Organization for Standardization, ISO/IEC JTC1/SC29/WG11, MPEG99/M5116, October 1999.


1998

Image Segmentation Based on the Integration of Pixel Affinity and Deformable Models
T. N. Jones, D. Metaxas
CVPR '98, Santa Barbara, CA, USA, June, 1998.

An Anthropometric Face Model using Variational Techniques
D. DeCarlo, D. Metaxas, M. Stone
SIGGRAPH’98, Orlando, FL, USA, July, 1998.

Shape Evolution with Structural and Topological Changes using Blending
D. DeCarlo, D. Metaxas
IEEE PAMI, Vol. 20(11), pp. 1186-1205, November, 1998.

Deformable Model-Based Shape and Motion Analysis from Images using Motion Residual Error
D. DeCarlo and D. Metaxas
ICCV’98, Bombay, India, January, 1998.

Vision-Based Animation of Digital Humans
Kakadiaris, D. Metaxas
Computer Animation '98, Philadelphia, PA, June, 1998.


1997

Automated 3D Segmentation Using Deformable Models and Fuzzy Affinity
T. N. Jones, D. Metaxas
Information Processing in Medical Imaging (IPMI'97), Poultney, Vermont, USA, June, 1997.

Segmentation Using Deformable Models with Affinity-based Localization
T. N. Jones, D. Metaxas
CVRMed / MRCAS'97, Grenoble, France, March, 1997.

Modeling the Motion of a Hot, Turbulent Gas
N. Foster, D. Metaxas
International Conference on Computer Graphics and Interactive Techniques, Los Angeles, California, USA, August, 1997.

Controlling Fluid Animation
N. Foster, D. Metaxas
Computer Graphics International (CGI’97), Kinepolis, Belgium, June, 1997.


1996

Blended Deformable Models
D. DeCarlo, D. Metaxas
IEEE PAMI, Vol 18(4), pp. 443-448, April 1996.

Realistic Animation of Liquids
N. Foster, D. Metaxas
Graphical Models and Image Processing, Vol. 58, Issue 5, pp. 471 – 483, September 1996.

The Integration of Optical Flow and Deformable Models with Applications to Human Face Shape and Motion Estimation
D. DeCarlo, D. Metaxas
CVPR’96, San Francisco, CA, USA, June, 1996.

Model-based Estimation of 3D Human Motion with Occlusion Based on Active Multi-Viewpoint Selection
Kakadiaris, D. Metaxas
CVPR’96, San Francisco, CA, USA, June, 1996.


1995

Integrating Anatomy and Physiology for Behavior Modeling
D. DeCarlo, J. Kaye, D. Metaxas, J. R. Clarke, B. Webber, N. Badler
MedicineMeets Virtual Reality 3, San Diego, 1995.

Adaptive Shape Evolution Using Blending
D. DeCarlo, D. Metaxas
ICCV’95, MIT, Cambridge, Massachusetts, USA, June, 1995.

3D Human Body Model Acquisition from Multiple Views
Kakadiaris, D. Metaxas
ICCV’95, MIT, Cambridge, Massachusetts, USA, June, 1995.



1994

Blended Deformable Models
D. DeCarlo, D. Metaxas
CVPR’04, Seattle, WA, USA, June, 1994.

Active Part-Decomposition, Shape and Motion Estimation of Articulated Objects: A Physics-based Approach
Kakadiaris, D. Metaxas, R. Bajcsy
CVPR’94, Seattle, WA, USA, June, 1994.

Active Motion-based Segmentation of Human Body Outlines
Kakadiaris, D. Metaxas, R. Bajcsy
Workshop on Motion of Non-Rigid and Articulated Objects, Austin, TX, November, 1994.