Stefanos Zafeiriou

Stephan Liwicki, Georgios Tzimiropoulos, Stefanos Zafeiriou, Maja Pantic: Euler Principal Component Analysis. International Journal of Computer Vision 101(3): 498-518 (2013)

Stefanos Zafeiriou, Gary A. Atkinson, Mark F. Hansen, William A. P. Smith, Vasileios Argyriou, Maria Petrou, Melvyn L. Smith, Lyndon N. Smith: Face Recognition and Verification Using Photometric Stereo: The Photoface Database and a Comprehensive Evaluation. IEEE Transactions on Information Forensics and Security 8(1): 121-135 (2013)

Konstantinos Bousmalis, Stefanos Zafeiriou, Louis-Philippe Morency, Maja Pantic: Infinite Hidden Conditional Random Fields for Human Behavior Analysis. IEEE Trans. Neural Netw. Learning Syst. 24(1): 170-177 (2013)

Stefanos Zafeiriou, Mihalis A. Nicolaou, Maja Pantic: A Unified Framework for Probabilistic Component Analysis. CoRR abs/1303.3240 (2013)

Stefanos Zafeiriou, Lijun Yin: 3D facial behaviour analysis and understanding. Image Vision Comput. 30(10): 681-682 (2012)

Georgia Sandbach, Stefanos Zafeiriou, Maja Pantic, Lijun Yin: Static and dynamic 3D facial expression recognition: A comprehensive survey. Image Vision Comput. 30(10): 683-697 (2012)

Georgia Sandbach, Stefanos Zafeiriou, Maja Pantic, Daniel Rueckert: Recognition of 3D facial expression dynamics. Image Vision Comput. 30(10): 762-773 (2012)

Georgios Tzimiropoulos, Stefanos Zafeiriou, Maja Pantic: Subspace Learning from Image Gradient Orientations. IEEE Trans. Pattern Anal. Mach. Intell. 34(12): 2454-2466 (2012)

Stefanos Zafeiriou, Georgios Tzimiropoulos, Maria Petrou, Tania Stathaki: Regularized Kernel Discriminant Analysis With a Robust Kernel for Face Recognition and Verification. IEEE Trans. Neural Netw. Learning Syst. 23(3): 526-534 (2012)

Stephan Liwicki, Stefanos Zafeiriou, Georgios Tzimiropoulos, Maja Pantic: Efficient Online Subspace Learning With an Indefinite Kernel for Visual Tracking and Recognition. IEEE Trans. Neural Netw. Learning Syst. 23(10): 1624-1636 (2012)

Stephan Liwicki, Stefanos Zafeiriou, Maja Pantic: Incremental Slow Feature Analysis with Indefinite Kernel for Online Temporal Video Segmentation. ACCV (2) 2012: 162-176

Georgios Tzimiropoulos, Joan Alabort-i-Medina, Stefanos Zafeiriou, Maja Pantic: Generic Active Appearance Models Revisited. ACCV (3) 2012: 650-663

Georgia Sandbach, Stefanos Zafeiriou, Maja Pantic: Binary Pattern Analysis for 3D Facial Action Unit Detection. BMVC 2012: 1-12

Ioannis Marras, Stefanos Zafeiriou, Georgios Tzimiropoulos: Robust Learning from Normals for 3D Face Recognition. ECCV Workshops (2) 2012: 230-239

Stefanos Zafeiriou: Subspace Learning in Krein Spaces: Complete Kernel Fisher Discriminant Analysis with Indefinite Kernels. ECCV (4) 2012: 488-501

Georgia Sandbach, Stefanos Zafeiriou, Maja Pantic: Local normal binary patterns for 3D facial action unit detection. ICIP 2012: 1813-1816

Stefanos Zafeiriou, Maria Petrou: 2.5D Elastic graph matching. Computer Vision and Image Understanding 115(7): 1062-1072 (2011)

Stefanos Zafeiriou, Maria Petrou: Nonnegative tensor factorization as an alternative Csiszar-Tusnady procedure: algorithms, convergence, probabilistic interpretations and novel probabilistic tensor latent variable analysis algorithms. Data Min. Knowl. Discov. 22(3): 419-466 (2011)

Georgia Sandbach, Stefanos Zafeiriou, Maja Pantic, Daniel Rueckert: A dynamic approach to the recognition of 3D facial expressions and their temporal models. FG 2011: 406-413

Stephan Liwicki, Stefanos Zafeiriou, Georgios Tzimiropoulos, Maja Pantic: Fast and robust appearance-based tracking. FG 2011: 507-513

Georgios Tzimiropoulos, Stefanos Zafeiriou, Maja Pantic: Principal component analysis of image gradient orientations for face recognition. FG 2011: 553-558

Florian Eyben, Stavros Petridis, Björn Schuller, Georgios Tzimiropoulos, Stefanos Zafeiriou, Maja Pantic: Audiovisual classification of vocal outbursts in human conversation using Long-Short-Term Memory networks. ICASSP 2011: 5844-5847

Georgios Tzimiropoulos, Stefanos Zafeiriou, Maja Pantic: Robust and efficient parametric face alignment. ICCV 2011: 1847-1854

Georgios Tzimiropoulos, Vasileios Argyriou, Stefanos Zafeiriou, Tania Stathaki: Robust FFT-Based Scale-Invariant Image Registration with Image Gradients. IEEE Trans. Pattern Anal. Mach. Intell. 32(10): 1899-1906 (2010)

Spiros Nikolopoulos, Stefanos Zafeiriou, Nikos Nikolaidis, Ioannis Pitas: Image replica detection system utilizing R-trees and linear discriminant analysis. Pattern Recognition 43(3): 636-649 (2010)

Stefanos Zafeiriou, Mark F. Hansen, Gary A. Atkinson, Maria Petrou, Melvyn L. Smith: Baseline face recognition using photometric stereo data. Procedia CS 2: 20-25 (2010)

Stefanos Zafeiriou, Maria Petrou: Nonlinear Non-Negative Component Analysis Algorithms. IEEE Transactions on Image Processing 19(4): 1050-1066 (2010)

George Toderici, Georgios Passalis, Stefanos Zafeiriou, Georgios Tzimiropoulos, Maria Petrou, Theoharis Theoharis, Ioannis A. Kakadiaris: Bidirectional relighting for 3D-aided 2D face recognition. CVPR 2010: 2721-2728

Stefanos Zafeiriou, Nikolaos A. Laskaris: Nonnegative Embeddings and Projections for Dimensionality Reduction and Information Visualization. ICPR 2010: 726-729

Georgios Tzimiropoulos, Stefanos Zafeiriou: On the Subspace of Image Gradient Orientations. CoRR abs/1005.2715 (2010)

Nikolaos A. Laskaris, Stefanos Zafeiriou, Lambrini Garefa: Use of random time-intervals (RTIs) generation for biometric verification. Pattern Recognition 42(11): 2787-2796 (2009)

Irene Kotsia, Ioannis Pitas, Stefanos Zafeiriou: Novel Multiclass Classifiers Based on the Minimization of the Within-Class Variance. IEEE Transactions on Neural Networks 20(1): 14-34 (2009)

Stefanos Zafeiriou: Discriminant Nonnegative Tensor Factorization Algorithms. IEEE Transactions on Neural Networks 20(2): 217-235 (2009)

Stefanos Zafeiriou, Maria Petrou: Nonlinear Nonnegative Component Analysis. CVPR 2009: 2860-2865

Irene Kotsia, Stefanos Zafeiriou, Ioannis Pitas: Texture and shape information fusion for facial expression and facial action unit recognition. Pattern Recognition 41(3): 833-851 (2008)

Nikolaos A. Laskaris, Stefanos Zafeiriou: Beyond FCM: Graph-theoretic post-processing algorithms for learning and representing the data structure. Pattern Recognition 41(8): 2630-2644 (2008)

Symeon Nikitidis, Stefanos Zafeiriou, Ioannis Pitas: Camera Motion Estimation Using a Novel Online Vector Field Model in Particle Filters. IEEE Trans. Circuits Syst. Video Techn. 18(8): 1028-1039 (2008)

Stefanos Zafeiriou, Ioannis Pitas: Discriminant Graph Structures for Facial Expression Recognition. IEEE Transactions on Multimedia 10(8): 1528-1540 (2008)

Irene Kotsia, Stefanos Zafeiriou, Nikolaos Nikolaidis, Ioannis Pitas: Texture and Shape Information Fusion for Facial Action Unit Recognition. ACHI 2008: 77-82

Irene Kotsia, Stefanos Zafeiriou, Ioannis Pitas: Discriminant Non-negative Matrix Factorization and Projected Gradients for Frontal Face Verification. BIOID 2008: 82-90

Georgios Goudelis, Stefanos Zafeiriou, Anastasios Tefas, Nikos Nikolaidis, Ioannis Pitas: Motivating class-specific nonlinear projections for single and multiple view face verification. ICIP 2008: 2752-2755

Symeon Nikitidis, Stefanos Zafeiriou, Ioannis Pitas: Camera Motion Estimation Using Particle Filters. VISAPP (2) 2008: 670-673

Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: The discriminant elastic graph matching algorithm applied to frontal face verification. Pattern Recognition 40(10): 2798-2810 (2007)

Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: Learning Discriminant Person-Specific Facial Models Using Expandable Graphs. IEEE Transactions on Information Forensics and Security 2(1): 55-68 (2007)

Georgios Goudelis, Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: Class-Specific Kernel-Discriminant Analysis for Face Verification. IEEE Transactions on Information Forensics and Security 2(3-2): 570-587 (2007)

Irene Kotsia, Stefanos Zafeiriou, Ioannis Pitas: A Novel Discriminant Non-Negative Matrix Factorization Algorithm With Applications to Facial Image Characterization Problems. IEEE Transactions on Information Forensics and Security 2(3-2): 588-595 (2007)

Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: Minimum Class Variance Support Vector Machines. IEEE Transactions on Image Processing 16(10): 2551-2564 (2007)

Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: Discriminant Graph Structures for Face Verification. ICASSP (1) 2007: 497-500

Georgios Goudelis, Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: A Novel Kernel Discriminant Analysis for Face Verification. ICIP (4) 2007: 493-496

Stefanos Zafeiriou, Anastasios Tefas, Ioan Buciu, Ioannis Pitas: Exploiting discriminant information in nonnegative matrix factorization with application to frontal face verification. IEEE Transactions on Neural Networks 17(3): 683-695 (2006)

Spyros Nikolopoulos, Stefanos Zafeiriou, Panagiotis Sidiropoulos, Nikos Nikolaidis, Ioannis Pitas: Image Replica Detection using R-Trees and Linear Discriminant Analysis. ICME 2006: 1797-1800

Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: Blind Robust Watermarking Schemes for Copyright Protection of 3D Mesh Objects. IEEE Trans. Vis. Comput. Graph. 11(5): 596-607 (2005)

Stefanos Zafeiriou, Anastasios Tefas, Ioan Buciu, Ioannis Pitas: Class-Specific Discriminant Non-negative Matrix Factorization for Frontal Face Verification. ICAPR (2) 2005: 206-215

Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: Exploiting discriminant information in elastic graph matching. ICIP (3) 2005: 768-771

Stefanos Zafeiriou, Anastasios Tefas, Ioannis Pitas: A blind robust watermarking scheme for copyright protection of 3d mesh models. ICIP 2004: 1569-1572