Book Chapters
  • M. Pudane, S. Petrovica, E. Lavendelis, H.K. Ekenel, "Towards Truly Affective AAL Systems", Book Chapter in Enhanced Living Environments: Algorithms, Architectures, Platforms, and Systems, Springer, 2019
  • A. Pnevmatikakis, H.K. Ekenel, C. Barras, J. Hernando, “Multimodal Person Identification”, Book Chapter in Computers in the Human Interaction Loop, Human-Computer Interaction Series, Springer Verlag, London, 2009.

Journal Papers
  • F.V. Massoli, F. Falchi, A. Kantarci, S. Akti, H.K. Ekenel, G. Amato, "MOCCA: Multi-Layer One-Class ClassificAtion for Anomaly Detection", IEEE Transactions on Neural Networks and Learning Systems, accepted for publication, 2021.
  • D. Yaman, F.I. Eyiokur, H.K. Ekenel, "Multimodal Soft Biometrics: Combining Ear and Face Biometrics for Age and Gender Classification", Multimedia Tools and Applications, accepted for publication, 2021.
  • M.S. Rad, B. Bozorgtabar, C. Musat, U. Marti, M. Basler, H.K. Ekenel, J.-P. Thiran, "Benefiting from Multitask Learning to Improve Single Image Super-Resolution", Neurocomputing, Vol. 398, p. 304-313, 2020.
  • S.B. Salimi, B. Bozorgtabar, P. Schmid-Saugeon, M.S. Rad, H.K. Ekenel, J.-P. Thiran, "DermoNet: Densely Linked Convolutional Neural Network for Efficient Skin Lesion Segmentation", EURASIP Journal on Image and Video Processing, 2019: 71, December 2019.
  • B. Bozorgtabar, M.S. Rad, H.K. Ekenel, J.-P. Thiran, "Learn to Synthesize and Synthesize to Learn", Computer Vision and Image Understanding, Vol. 185, p. 1-11, August 2019.
  • B. Ekmen, H.K. Ekenel, “From 2D to 3D Real-Time Expression Transfer for Facial Animation”, Multimedia Tools and Applications, Vol. 78, No. 9, p. 12519-12535, 2019.
  • A. Genc, H.K. Ekenel, “Cross-dataset Person Re-Identification Using Deep Convolutional Neural Networks: Effects of Context and Domain Adaptation”, Multimedia Tools and Applications, Vol. 78, No. 5, p. 5843-5861, 2019.
  • E. Ghaleb, G. Özbulak, H. Gao, H.K. Ekenel, “Deep Representation and Score Normalization for Face Recognition Under Mismatched Conditions”, IEEE Intelligent Systems, Vol. 33, No. 3, p. 43-46, May/June 2018.
  • F.I. Eyiokur, D. Yaman, H.K. Ekenel, "Domain Adaptation for Ear Recognition Using Deep Convolutional Neural Networks", IET Biometrics, Vol. 7, No. 3, p. 199-206, May 2018.
  • H. Erdogan, Y. Palaska, E. Masazade, D.E. Barkana, H.K. Ekenel, “Vision-based Game Design and Assessment for Physical Exercise in a Robot-Assisted Rehabilitation System”, IET Computer Vision, Vol. 12, No. 1, p. 59-68, February 2018.
  • K. Grm, V. Struc, A. Artiges, M. Caron, H.K. Ekenel, "Strengths and Weaknesses of Deep Learning Models for Face Recognition Against Image Degradations", IET Biometrics, Vol. 7, No. 1, p. 81-89, January 2018.
  • B. Meden, R. Mallı, S. Fabijan, H.K. Ekenel, V. Struc, P. Peer, "Face Deidentification with Generative Deep Neural Networks", IET Signal Processing,  Vol. 11, No. 9, p. 1046-1054, December 2017.
  • C. Qu, H. Gao, H.K. Ekenel, "Rotation Update on Manifold in Probabilistic NRSFM for Robust 3D Face Modeling", EURASIP Journal on Image and Video Processing 2015 (1):45, December 2015.
  • F. Jiang, M. Fischer, H.K. Ekenel, B. Shi, "Combining Texture and Stereo Disparity Cues for Real-time Face Detection", Signal Processing: Image Communication, Vol. 28, No. 9, p. 1100-1113, 2013.
  • H.K. Ekenel, T. Semela, “Multimodal Genre Classification of TV Programs and YouTube Videos”, Multimedia Tools and Applications, Vol. 63, No. 2, p. 547-567, 2013.
  • M. Fischer, H.K. Ekenel, R. Stiefelhagen, “Person Re-Identification in TV Series Using Robust Face Recognition and User Feedback“, Multimedia Tools and Applications, Vol. 55, No. 1, p. 83-104, 2011.
  • H.K. Ekenel, J. Stallkamp, R. Stiefelhagen, “A Video-based Door Monitoring System Using Local Appearance-based Face Models”, Computer Vision and Image Understanding, Vol. 114, No. 5, p. 596–608, May 2010.
  • K. Bernardin, H.K. Ekenel, R. Stiefelhagen, “Multimodal Identity Tracking in a Smart Room”, Personal and Ubiquitous Computing, Vol. 13, No. 1, p. 25-31, January 2009.
  • R. Stiefelhagen, H.K. Ekenel, C. Fügen, P. Gieselmann, H. Holzapfel, F. Kraft, K. Nickel, M. Voit, A. Waibel, "Enabling Multimodal Human-Robot Interaction for the Karlsruhe Humanoid Robot", IEEE Transactions on Robotics, Vol. 23, No. 5, p. 840-851, October 2007. 
  • H. K. Ekenel, H. Gao, R. Stiefelhagen, "3-D Face Recognition Using Local Appearance-Based Models", IEEE Transactions on Information Forensics and Security, Vol. 2, No. 3, p. 630-635, September 2007.
  • R. Stiefelhagen, K. Bernardin, H.K. Ekenel, J. McDonough, K. Nickel, M. Voit, M. Wölfel, "Audio-Visual Perception of a Lecturer in a Smart Seminar Room", Signal Processing, Vol. 86, No. 12, p. 3518-3533, December 2006.
  • H.K. Ekenel, B. Sankur, "Multiresolution Face Recognition", Image and Vision Computing, Vol. 23, No. 5, p. 469-477, May 2005.
  • H.K. Ekenel, B. Sankur, "Feature Selection in the Independent Component Subspace for Face Recognition", Pattern Recognition Letters, Vol. 25, No. 12, p. 1377-1388, September 2004.

International Conference & Workshop Papers
2022
  • Ş. Aktı, F. Ofli, M. Imran and H. K. Ekenel, "Fight detection from still images in the wild", IEEE/CVF Winter Conference on Applications of Computer Vision Workshops (WACVW), 2022.
2021
  • M.E. Erakin, U. Demir, H.K. Ekenel, "On Recognizing Occluded Faces in the Wild", IEEE 20th International Conference of the Biometrics Special Interest Group (BIOSIG), Darmstadt, Germany, September 2021.
  • A. Kantarci, H. Dertli, H.K. Ekenel, "Shuffled Patch-Wise Supervision for Presentation Attack Detection", IEEE 20th International Conference of the Biometrics Special Interest Group (BIOSIG), Darmstadt, Germany, September 2021.
  • F. Boutros, et al., "MFR 2021: Masked Face Recognition Competition", IEEE International Joint Conference on Biometrics (IJCB), 2021.
  • S. Purnapatra, et. al., "Face Liveness Detection Competition (LivDet-Face) 2021", IEEE International Joint Conference on Biometrics (IJCB), 2021.
  • M.S. Rad, T. Yu, C. Musat, H.K. Ekenel, B. Bozorgtabar, J.-P. Thiran"Benefitting from bicubically down-sampled images for learning real-world image superresolution", IEEE/CVF Winter Conference on Applications of Computer Vision (WACV), 2021.
2020
  • D. Engin, A. Kantarci, S. Arslan, H.K. Ekenel, "Offline Signature Verification on Real-World Documents", IEEE/CVF Conference on Computer Vision and Pattern Recognition Biometrics Workshop, 2020.
  • A.C. Ozgen, H.K. Ekenel, "Words as Art Materials: Generating Paintings with Sequential GANs", arXiv preprint arXiv:2007.04383, 2020.
  • D. Yaman, F. Eyiokur, H.K. Ekenel, "Ear2Face: Deep Biometric Modality Mapping", arXiv preprint arXiv:2006.01943, 2020.
2019
  • M.S. Rad, B. Bozorgtabar, U. Marti, M. Basler, H.K. Ekenel, J.-P. Thiran, "SROBB: Targeted Perceptual Loss for Single Image Super Resolution", IEEE/CVF International Conference on Computer Vision, Seoul, Korea, October/November 2019.
  • Ş. Aktı, G.A. Tataroğlu, H.K. Ekenel, “Vision-based Fight Detection from Surveillance Cameras”, IEEE/EURASIP 9th International Conference on Image Processing Theory, Tools and Applications, Istanbul, Turkey, November 2019.
  • G. Jaume, H.K. Ekenel, J.-P. Thiran, "FUNSD: A Dataset for Form Understanding in Noisy Scanned Documents", 2nd ICDAR International Workshop on Open Services and Tools for Document Analysis (ICDAR-OST), Sydney, Australia, September 2019.
  • A. Kantarci, H.K. Ekenel, "Thermal to Visible Face Recognition Using Deep Autoencoders", IEEE 18th International Conference of the Biometrics Special Interest Group (BIOSIG), Darmstadt, Germany, September 2019.
  • O.A. Aghdam, B. Bozorgtabar, H.K. Ekenel, J.-P. Thiran, “Exploring Factors for Improving Low Resolution Face Recognition”, IEEE CVPR Workshop on Biometrics, Long Beach, CA, USA, June 2019.
  • D. Yaman, F. Eyiokur, H.K. Ekenel, “Multimodal Age and Gender Classification from Profile Face Images”, IEEE CVPR Workshop on Biometrics, Long Beach, CA, USA, June 2019.
  • Z. Emersic, et al., “The Unconstrained Ear Recognition Challenge 2019”, International Conference on Biometrics (ICB), Crete, Greece, June 2019.
  • B. Bozorgtabar, M.S. Rad, H.K. Ekenel, J.-P. Thiran, “Using Photorealistic Face Synthesis and Domain Adaptation to Improve Facial Expression Analysis”, IEEE International Conference on Automatic Face and Gesture Recognition (FG), Lille, France, May 2019.
  • T. Albrici, M. Fasounaki, S.B. Salimi, G. Vray, B. Bozorgtabar, H.K. Ekenel, J.-P. Thiran, “G2-VER: Geometry Guided Model Ensemble for Video-based Facial Expression Recognition”, IEEE International Conference on Automatic Face and Gesture Recognition (FG) Workshop on Face Analysis for Advanced Driver Assistance Systems (FA4ADAS), Lille, France, May 2019.
  • M.S. Albayrak, A. Öner, I.M. Arakli, H.K. Ekenel, “Personalized Training in Fast-Food Restaurants Using Augmented Reality Glasses”, International Symposium on Educational Technology (ISET), Hradec Kralove, Czech Republic, July 2019.
2018
  • H. Köse, D.E. Barkana, H.K. Ekenel, S. Yilar, "An Affectively Aware Assistive Robotic Platform for Rehabilitation of Deaf Children", Symposium on Robots for Language Learning, Istanbul, Turkey, December 2018.
  • G. Jaume, B. Bozorgtabar, H.K. Ekenel, J.-P. Thiran, M. Gabrani, "Image-Level Attentional Context Modeling Using Nested-Graph Neural Networks", NIPS Workshop on Relational Representation Learning, Montreal, Canada, December 2018.
  • D. Engin, C.R.J. Ecabert, H.K. Ekenel, J.-P. Thiran, "Face Frontalization for Cross-Pose Facial Expression Recognition", 26th European Signal Processing Conference (EUSIPCO 2018), Rome, Italy, September 2018.
  • D. Engin, A. Genç, H.K. Ekenel, "Cycle-Dehaze: Enhanced CycleGAN for Single Image Dehazing", CVPR New Trends in Image Restoration and Enhancement Workshop (NTIRE), Salt Lake City, Utah, USA, June 2018.
  • C. Ancuti, et. al., "NTIRE 2018 Challenge on Image Dehazing: Methods and Results", CVPR New Trends in Image Restoration and Enhancement Workshop (NTIRE), Salt Lake City, Utah, USA, June 2018.
  • D. Yaman, F.I. Eyiokur, N. Sezgin, H.K. Ekenel, "Age and Gender Classification from Ear Images", International Workshop on Biometrics and Forensics (IWBF), Sassari, Italy, June 2018.
2017
  • M. Aygün, Y. Aytar, H.K. Ekenel, "Exploiting Convolution Filter Patterns for Transfer Learning", ICCV Workshop on Transferring and Adapting Source Knowledge in Computer Vision (TASK-CV), Venice, Italy, October 2017.
  • Z. Emersic, D. Stepec, V. Struc, P. Peer, A. George, A. Ahmad, E. Omar, T.E. Boult, R. Safdari, Y. Zhou, S. Zafeiriou, D. Yaman, F.İ. Eyiokur, H.K. Ekenel, “The Unconstrained Ear Recognition Challenge”, International Joint Conference on Biometrics (IJCB), Denver, Colorado, USA, October 2017.
  • D. Matti, H.K. Ekenel, J.-P. Thiran, “Combining LiDAR Space Clustering and Convolutional Neural Networks for Pedestrian Detection”, IEEE AVSS International Workshop on Traffic and Street Surveillance for Safety and Security, Lecce, Italy, August 2017.
  • M. Zimmermann, M.M. Ghazi, H.K. Ekenel, J.-P. Thiran, "Combining Multiple Views for Visual Speech Recognition", International Conference on Auditory-Visual Speech Processing (AVSP), Stockholm, Sweden, August 2017.
  • M.S. Rad, A. von Kaenel, A. Droux, F. Tieche, N. Ouerhani, H.K. Ekenel, J.-P. Thiran, "A Computer Vision System to Localize and Classify Wastes on the Streets", 11th International Conference on Computer Vision Systems (ICVS), Shenzhen, China, July 2017.
  • Y. Palaska, H. Erdogan, E. Masazade, H.K. Ekenel, D.E. Barkana, "Distinguishing Levels of Challenge from Physiological Signals for the Robot-Assisted Rehabilitation System, RehabRoby", IEEE 30th Canadian Conference on Electrical and Computer Engineering (CCECE), Windsor, ON, Canada, April/May 2017.
  • A. Ulu, H.K. Ekenel, "Evaluation of Deep Convolutional Neural Network-Based Representations for Cross Dataset Person Re-Identification", International Conference on Computer Vision Theory and Applications (VISAPP), Porto, Portugal, February 2017.
  • S. Petrovica, A. Anohina-Naumeca, H.K. Ekenel, "Emotion Recognition in Affective Tutoring Systems: Collection of Ground-truth Data", Procedia Computer Science, 2017
2016
  • M. Zimmermann, M.M. Ghazi, H.K. Ekenel, J.-P. Thiran, "Visual Speech Recognition Using PCA Networks and LSTMs in a Tandem GMM-HMM System", ACCV Workshop: Multi-View Lip-Reading/Audio-Visual Challenges, Taipei, Taiwan, November 2016.
  • M.M. Ghazi, H.K. Ekenel, "Automatic Emotion Recognition in the Wild Using an Ensemble of Static and Dynamic Representations", ACM ICMI Facial Expressions in the Wild Workshop (EmotiW), Tokyo, Japan, November 2016.
  • G. Özbulak, Y. Aytar, H.K. Ekenel, "How Transferable are CNN-based Features for Age and Gender Classification?", 15th International Conference of the Biometrics Special Interest Group (BIOSIG), Darmstadt, Germany, September 2016.
  • Ş. Karahan, M. Kılınç Yıldırım, K. Kırtaç, F.Ş. Rende, G. Bütün, H.K. Ekenel, "How Image Degradations Affect Deep CNN-based Face Recognition?", 15th International Conference of the Biometrics Special Interest Group (BIOSIG), Darmstadt, Germany, September 2016.
  • S. Petrovica, H.K. Ekenel, "Emotion Recognition for Intelligent Tutoring", International Workshop on Intelligent Educational Systems, Technology-enhanced Learning and Technology Transfer Models (INTEL-EDU), Prague, Czech Republic, September 2016.
  • İ.E. Zülfikar, H. Dibeklioğlu, H.K. Ekenel, "A Preliminary Study on Visual Estimation of Taste Appreciation", IEEE ICME International Workshop on Multimedia for Cooking and Eating Activities", Seattle, USA, July 2016.
  • R.C. Mallı, M. Aygün, H.K. Ekenel, "Apparent Age Esimation Using Ensemble of Deep Learning Models", CVPR ChaLearn Looking at People and Faces of the World: Face Analysis Workshop and Challenge, Las Vegas, NV, USA, June 2016.
  • M.M. Ghazi, H.K. Ekenel, "A Comprehensive Analysis of Deep Learning Based Representation for Face Recognition", CVPR Biometrics Workshop, Las Vegas, NV, USA, June 2016.
  • J. Poignant, M. Budnik, H. Bredin, C. Barras, M. Stefas, P. Bruneau, G. Adda, L. Besacier, H. Ekenel, G. Francopoulo, J. Hernando, J. Mariani, R. Morros, G. Quénot, S. Rosset, T. Tamisier, "The CAMOMILE Collaborative Annotation Platform for Multi-modal, Multi-lingual and Multi-media Documents", Language Resources and Evaluation Conference (LREC), Portorož, Slovenia, May 2016.
2015
  • E. Ghaleb, M. Tapaswi, Z. Al-Halah, H.K. Ekenel, R. Stiefelhagen, "Accio: A Data Set for Face Track Retrieval in Movies Across Age", ACM International Conference on Multimedia Retrieval (ICMR), Shanghai, China, June 2015.
  • H. Gao, H.K. Ekenel, R. Stiefelhagen, "Combining View-based Pose Normalization and Feature Transform for Cross-Pose Face Recognition", International Conference on Biometrics (ICB), Phuket, Thailand, May 2015.
  • T. Gehrig, Z. Al-Halah, H.K. Ekenel, R. Stiefelhagen, "Action Unit Intensity Estimation Using Hierearchical Partial Least Squares", IEEE International Conference on Automatic Face and Gesture Recognition (FG), Ljubljana, Slovenia, May 2015.
2014
  • S. Kalaycı, H.K. Ekenel, H. Gunes, "Automatic Analysis of Facial Attractiveness from Video", IEEE International Conference on Image Processing (ICIP), Paris, France, October 2014.
  • M. Tapaswi, C.Ç. Çörez, M. Bäuml, H.K. Ekenel, R. Stiefelhagen, "Cleaning Up After a Face Tracker: False Positive Removal", IEEE International Conference on Image Processing (ICIP), Paris, France, October 2014.
  • U. Demir, E. Ghaleb, H.K. Ekenel, "A Face Recognition Based Multiplayer Mobile Game Application", 10th International Conference on Artificial Intelligence Applications and Innovations (AIAI), Rhodes, Greece, September 2014.
  • M. Richter, H. Gao, H.K. Ekenel, "Extending Explicit Shape Regression with Mixed Feature Channels and Pose Priors", IEEE Conference on Applications of Computer Vision (WACV 2014), Steamboat Springs CO, USA, March 2014.
2013
  • T. Gehrig, H.K. Ekenel, "Why is Facial Expression Analysis in the Wild Challenging?", Emotion Recognition in the Wild Challenge and Workshop (EmotiW 2013), Sydney, Australia, December 2013.
  • H. Bredin, J. Poignant, G. Fortier, M. Tapaswi, V.-B. Le, A. Roy, C. Barras, S. Rosset, A. Sarkar, Q. Yang, H. Gao, A. Mignon, J. Verbeek, L. Besacier, G. Quénot, H.K. Ekenel, R. Stiefelhagen, “QCompere @ REPERE 2013”, First Workshop on Speech, Language and Audio in Multimedia (SLAM 2013), August 2013.
  • F. Güney, N.M. Arar, M. Fischer, H.K. Ekenel, “Cross-pose Facial Expression Recognition”, 2nd  International Workshop on Emotion Representation, Analysis and Synthesis in Continuous Time and Space (EmoSPACE), Shanghai, China, April 2013.
2012
  • H. Gao, H.K. Ekenel, R. Stiefelhagen, “A Ranking Model for Face Alignment with Pseudo Census Transform”, 21st International Conference on Pattern Recognition (ICPR 2012), Tsukuba, Japan, November 2012. 
  • N. Hesse, T. Gehrig, H. Gao, H.K. Ekenel, “Multi-view Facial Expression Recognition using Local Appearance Features”, 21st International Conference on Pattern Recognition (ICPR 2012), Tsukuba, Japan, November 2012.
  • M. Richter, T. Gehrig, H.K. Ekenel, “Facial Expression Classification on Web Images”, 21st  International Conference on Pattern Recognition (ICPR 2012), Tsukuba, Japan, November 2012.
  • F. Jiang, H.K. Ekenel, B. Shi, “Efficient and Robust Integration of Face Detection and Head Pose Estimation”, 21st International Conference on Pattern Recognition (ICPR 2012), Tsukuba, Japan, November 2012.
  • B. Safadi, N. Derbas, A. Hamadi, F. Thollard, G. Quénot, J. Delhumeau, H. Jégou, T. Gehrig, H.K. Ekenel, R. Stifelhagen, “Quaero at TRECVID 2012: Semantic Indexing”, TRECVID Evaluation Workshop, Gaithersburg, MD, USA, November 2012.
  • H. Bredin, J. Poignant, M. Tapaswi, G. Fortier, V.B. Le, T. Napoleon, H. Gao, C. Barras, S. Rosset, L. Besacier, J. Verbeek, G. Quénot, F. Jurie, H.K. Ekenel, “Fusion of speech, faces and text for person identification in TV broadcast”, ECCV 2012 Workshop on Information Fusion in Computer Vision for Concept Recognition, Florence, Italy, October 2012.
  • T. Semela, M. Tapaswi, H.K. Ekenel, R. Stiefelhagen, “KIT at MediaEval 2012 -Content-based Genre Classification with Visual Cues”, MediaEval Workshop, Pisa, Italy, October 2012.
  • N.M. Arar, H. Gao, H.K. Ekenel, L. Akarun, ‘‘Selection and Combination of Local Gabor Classifiers for Robust Face Verification’’, IEEE 5th International Conference on Biometrics: Theory, Applications and Systems (BTAS), Washington DC, USA, September 2012.
  • M. Fischer, H.K. Ekenel, R. Stiefelhagen, “Analysis of Partial Least Squares for Pose-Invariant Face Recognition”, IEEE 5th International Conference on Biometrics: Theory, Applications and Systems (BTAS), Washington DC, USA, September 2012.
  • C. Qu, H. Gao, H. K. Ekenel, “Rotation Update on Manifold for Robust Non-rigid Structure from Motion”, In Proc. of IEEE International Conference on Image Processing (ICIP), Orlando, Florida, USA, September 2012
  • H. Gao, H.K. Ekenel, R. Stiefelhagen, “Face Alignment Using a Ranking Model based on Regression Trees”, 23rd British Machine Vision Conference (BMVC’12), Surrey, UK, September, 2012.
  • L. Dan, J. Ohya, H.K. Ekenel, “Human Gesture Analysis Using Multimodal Features”, 2nd Intl. Workshop on Interactive Ambient Intelligence Multimedia Environments, in conj. with IEEE Intl. Conference on Multimedia and Expo (ICME 2012), Melbourne, Australia, June 2012.
  • N.M. Arar, F. Güney, N.K. Bekmezci, H. Gao, H.K. Ekenel, “Real-time Face Swapping in Video Sequences - Magic Mirror”, International Conference on Computer Vision Theory and Applications (VISAPP), Rome, Italy, February 2012. 
2011
  • B. Safadi, N. Derbas, A. Hamadi, F. Thollard, G. Quénot, H. Jégou, T. Gehrig, H.K. Ekenel, R. Stifelhagen, “Quaero at TRECVID 2011: Semantic Indexing and Multimedia Event Detection”, TRECVID Evaluation Workshop, Gaithersburg, MD, USA, December 2011.
  • T. Gehrig, H.K. Ekenel, “Facial Action Unit Detection Using Kernel Partial Least Squares”, 1st IEEE Intl. Workshop on Benchmarking Facial Image Analysis Technologies (BeFIT 2011), Barcelona, Spain, November 2011.
  • T. Semela, H.K. Ekenel, “KIT at MediaEval 2011 -Content-based genre classification on web-videos”, MediaEval Workshop, Pisa, Italy, September 2011.
  • F. Jiang, B. Shi, M. Fischer, H.K. Ekenel, “Effective Discretization of Gabor Features for Real-Time Face Detection”, IEEE International Conference on Image Processing (ICIP’11), Brussels, Belgium, September 2011.
  • H. Gao, H. K. Ekenel, M. Fischer, R. Stiefelhagen, “Boosting Pseudo Census Transform Features for Face Alignment”, 22nd British Machine Vision Conference (BMVC’11), Dundee, UK, August/September, 2011.
  • T. Gehrig, H.K. Ekenel, “A Common Framework for Real-Time Emotion Recognition and Facial Action Unit Detection”, IEEE Workshop on CVPR for Human Communicative Behavior Analysis, June 2011.
  • H. Gao, H.K. Ekenel, R. Stiefelhagen, “Identifying Important People in Broadcast News Videos”, IAPR Conference on Machine Vision Applications, Nara, Japan, June 2011.
  • D. Luo, H. Gao, H.K. Ekenel, J. Ohya, “Facial Analysis Aided Human Gesture Recognition for Human Computer Interaction”, IAPR Conference on Machine Vision Applications, Nara, Japan, June 2011.
  • D. Luo, H. Gao, H.K. Ekenel, J. Ohya, “Appearance-based Human Gesture Recognition Using Multimodal Features for Human Computer Interaction”, IS&T/SPIE Electronic Imaging, San Francisco, USA, January 2011.
2010
  • B. Safadi, Y. Tong, F. Thollard, G. Quénot, T. Gehrig, H.K. Ekenel, R. Stifelhagen, “Quaero at TRECVID 2010: Semantic Indexing”, TRECVID Evaluation Workshop, Gaithersburg, MD, USA, November 2010.
  • H.K. Ekenel, T. Semela, R. Stiefelhagen, “Content-based Video Genre Classification Using Multiple Cues”, In Proc. of 3rd Intl. Workshop on Automated Information Extraction in Media Production (AIEMPro’10), Florence, Italy, October 2010.
  • H. Gao, H.K. Ekenel, R. Stiefelhagen, “Robust Open-Set Face Recognition for Small-Scale Convenience Applications”, In Proc. of 32nd Annual Symposium of the German Association for Pattern Recognition (DAGM’10), Darmstadt, Germany, September 2010.
  • M. Bäuml, K. Bernardin, M. Fischer, H.K. Ekenel, R. Stiefelhagen, “Multi-Pose Face Recognition for Person Retrieval in Camera Networks”, In Proc. of 7th IEEE International Conference on Advanced Video and Signal-Based Surveillance (AVSS’10), Boston, USA, September 2010.
  • H.K. Ekenel, R. Stiefelhagen, “Automatic Frequency Band Selection for Illumination Robust Face Recognition”, In Proc. of Intl. Conf. on Pattern Recognition (ICPR’10), Istanbul, Turkey, August 2010.
  • H. Gao, H.K. Ekenel, M. Fischer, R. Stiefelhagen, “Multi-resolution Local Appearance-based Face Verification”, In Proc. of Intl. Conf. on Pattern Recognition (ICPR’10), Istanbul, Turkey, August 2010.
  • L. Rybok, M. Voit, H.K. Ekenel, R. Stiefelhagen, “Multi-view Based Estimation of Human Upper-Body Orientation”, In Proc. of Intl. Conf. on Pattern Recognition (ICPR’10), Istanbul, Turkey, August 2010.
  • C. Keskin, İ. Arı, T. Eren, F. Kıraç, L. Rybok, H. Ekenel, R. Stiefelhagen, L. Akarun, "Vision Based Hand Puppet," In Proc. of eNTERFACE 2010, In Proc. of the Summer Workshop on Multimodal Interfaces, pp. 10-17, August 2010.
  • M. Fischer, H.K. Ekenel, R. Stiefelhagen, “Interactive Person Re-identification in TV Series”, In Proc. of Intl. Workshop on Content-based Multimedia Indexing (CBMI’10), Grenoble, France, June 2010.
2009
  • H.K. Ekenel, A. Schumann, H. Gao, R. Stiefelhagen, “Universität Karlsruhe (TH) at TRECVID 2009”, TRECVID Evaluation Workshop, Gaithersburg, MD, USA, November 2009.
  • H.K. Ekenel, L. Szasz-Toth, R. Stiefelhagen, “Open-set Face Recognition-based Visitor Interface System”, 7th Intl. Conf. on Computer Vision Systems, LNCS, Vol. 5815, pp. 43-52, Liege, Belgium, October 2009.
  • H.K. Ekenel, R. Stiefelhagen, ”Face Alignment by Minimizing the Closest Classification Distance”, In Proc. of Intl. Conf. on Biometrics: Theory, Applications and Systems (BTAS’09), Washington DC, USA, September 2009.
  • H.K. Ekenel, R. Stiefelhagen, ”Why is Facial Occlusion a Challenging Problem?”, Intl. Conf. on Biometrics (ICB’09), LNCS, Vol. 5558, pp. 299-308, Alghero, Italy, June 2009.
  • H.K. Ekenel, R. Stiefelhagen, ”Generic versus Salient Region-based Partitioning for Local Appearance Face Recognition”, Intl. Conf. on Biometrics (ICB’09), LNCS, Vol. 5558, pp. 367-375, Alghero, Italy, June 2009.
  • H. Gao, H.K. Ekenel, R. Stiefelhagen, ”Pose Normalization for Local Appearance-Based Face Recognition”, Intl. Conf. on Biometrics (ICB’09), LNCS, Vol. 5558, pp. 32-41, Alghero, Italy, June 2009.
2008
  • H.K. Ekenel, H. Gao, R. Stiefelhagen, “Universität Karlsruhe (TH) at TRECVID 2008”, TRECVID Evaluation Workshop, Gaithersburg, MD, USA, November 2008.
  • R. Stiefelhagen, K. Bernardin, H.K. Ekenel, M. Voit, “Tracking Identities and Attention in Smart Environments - Contributions and Progress in the CHIL Project”, In Proc. of 8th IEEE Int. Conference on Face and Gesture Recognition, Amsterdam, Netherlands, September 2008.
2007
  • H.K. Ekenel, M. Fischer, H. Gao, K. Kilgour, J.S. Marcos, R. Stiefelhagen, "Universität Karlsruhe (TH) at TRECVID 2007", TRECVID Evaluation Workshop, Gaithersburg, MD, USA, November 2007.
  • J. Stallkamp, H.K. Ekenel, R. Stiefelhagen, "Video-based Face Recognition on Real-World Data", In Proc. of International Conference on Computer Vision (ICCV'07), pp. 1-8, Rio de Jenario, Brasil, October 2007.
  • H.K. Ekenel, J. Stallkamp, H. Gao, M. Fischer, R. Stiefelhagen, "Face Recognition for Smart Interactions", In Proc. of IEEE International Conference on Multimedia & Expo, pp. 1007-1010, Beijing, China, July 2007.
  • J. Stallkamp, H.K. Ekenel, H. Erdogan, R. Stiefelhagen, A. Ercil, "Video-Based Driver Identification Using Local Appearance Face Recognition", Workshop on DSP in Mobile and Vehicular Systems, Istanbul, Turkey, June 2007.
  • H.K. Ekenel, M. Fischer, R. Stiefelhagen, "Face Recognition in Smart Rooms", Machine Learning for Multimodal Interaction, LNCS, Vol. 4892, pp. 120-131, Brno, Czech Republic, June 2007.
  • H.K. Ekenel, M. Fischer, Q. Jin, R. Stiefelhagen, "Multi-modal Person Identification in a Smart Environment", In Proc. of CVPR Biometrics Workshop, Minneapolis, USA, June 2007.
  • H.K. Ekenel, Q. Jin, M. Fischer, R. Stiefelhagen, "“ISL Person Identification Systems in CLEAR 2007", CLEAR Evaluation Workshop, LNCS, Vol. 4625, pp. 256-265, Baltimore, US, May 2007.
  • S. Könn, H. Holzapfel, H.K. Ekenel, A. Waibel, "Integrating Face-ID into an Interactive Person-ID Learning System", In Proc. of International Conference on Computer Vision Systems, ICVS 2007, Bielefeld, Germany, March 2007.
  • H.K. Ekenel, R. Stiefelhagen, "An Un-awarely Collected Real World Face Database: The ISL-Door Face Database", In Proc. of International Conference on Computer Vision Systems, ICVS 2007, Bielefeld, Germany, March 2007. 
2006
  • K. Nickel, H.K. Ekenel, M. Voit, R. Stiefelhagen, "Audio-Visual Perception of Humans for a Humanoid Robot", In Proc. of 2nd Intl. Workshop on Human-Centered Robotics Systems 2006, Munich, October 2006.
  • H.K. Ekenel, R. Stiefelhagen, "Block Selection in the Local Appearance-based Face Recognition Scheme", In Proc. of CVPR Biometrics Workshop, New York, USA, June 2006.
  • H.K. Ekenel, R. Stiefelhagen, "Analysis of Local Appearance-based Face Recognition: Effects of Feature Selection and Feature Normalization", In Proc. of CVPR Biometrics Workshop, New York, USA, June 2006.
  • H. Holzapfel, T. Schaaf, H.K. Ekenel, C. Shaa, A. Waibel, "A Robot Learns to Know People - First Contacts of a Robot", In Proc. of 29th German Conference on Artificial Intelligence (KI2006), Bremen, Germany, June 2006.
  • K. Bernardin, H.K. Ekenel, R. Stiefelhagen, "Multimodal Identity Tracking in a Smartroom", In Proc. of 3rd IFIP Conference on Artificial Intelligence Applications & Innovations (AIAI), Athens, Greece, June 2006.
  • H.K. Ekenel, A. Pnevmatikakis, "Video-Based Face Recognition Evaluation in the CHIL Project – Run 1", In Proc of 7th International Conference Automatic Face and Gesture Recognition (FG2006), Southampton, UK, April 2006.
  • H.K. Ekenel, Q. Jin, “ISL Person Identification Systems in the CLEAR Evaluations”, CLEAR Evaluation Workshop, LNCS, Vol. 4122, pp. 249-257, Southampton, UK, April 2006.
  • K. Nickel, T. Gehrig, H.K. Ekenel, J. McDonough, R. Stiefelhagen. "An Audio-visual Particle Filter for Speaker Tracking on the CLEAR’06 Evaluation Dataset", CLEAR Evaluation Workshop, LNCS, Vol. 4122, pp. 69-80, Southampton, UK, April 2006.
2005
  • T. Gehrig, K. Nickel, H.K. Ekenel, U. Klee, J. McDonough, "Kalman Filters for Audio-Video Source Localization", In Proc. of IEEE Workshop on Applications of Signal Processing to Audio and Acoustics (WASPAA 2005), New York, USA, October, 2005.
  • M. Danninger, G. Flaherty, K. Bernardin, H.K. Ekenel, T. Köhler, R. Malkin, R. Stiefelhagen, A. Waibel, "The Connector -Facilitating Context-aware Communication", In Proc. of 7th International Conference on Multimodal Interfaces (ICMI 2005), Trento, Italy, October 2005.
  • H.K.Ekenel, R. Stiefelhagen, "Local Appearance based Face Recognition Using Discrete Cosine Transform", In Proc. of 13th European Signal Processing Conference (EUSIPCO 2005), Antalya, Turkey, September 2005.
  • M. Wölfel, H.K. Ekenel, "Feature Weighted Mahalanobis Distance: Improved Robustness for Gaussian Classifiers", In Proc. of 13th European Signal Processing Conference (EUSIPCO 2005), Antalya, Turkey, September 2005.
  • H.K.Ekenel, R. Stiefelhagen, "A Generic Face Representation Approach for Local Appearance based Face Verification", In Proc. of CVPR IEEE Workshop on Face Recognition Grand Challenge Experiments, San Diego, CA, USA, June 2005.
  • H. Erdoğan, A. Erçil, H.K. Ekenel, S.Y. Bilgin, İ. Eden, M. Kirişçi, "Mutlimodal Person Recognition for Vehicular Applications", 6th International Workshop on Multiple Classifier Systems (MCS 2005), LNCS, Vol. 3541, pp. 366–375, California, USA, June 2005. 
2004
  • E. Arısoy, M.L. Arslan, M.N. Demiralp, H.K. Ekenel, M. Kelepir, H.M. Meral, A.S. Özsoy, Ö. Şayli, O. Türk, B. Yolcu, "Acoustic Analysis of Turkish Sounds", In Proc. of 12th International Conference on Turkish Linguistics (ICTL 2004), Izmir, Turkey, August 11-13, 2004. 

Publications in National Conferences
  • B. Ekmen, H.K. Ekenel, "Real Time Animated Facial Expression Tranfer", IEEE Signal Processing and Communications Applications Conference, Zonguldak, Turkey, May 2016.
  • A. Ulu, H.K. Ekenel, "Convolutional Neural Network-based Representation for Person Re-Identification", IEEE Signal Processing and Communications Applications Conference, Zonguldak, Turkey, May 2016.
  • H. Erdoğan, H.K. Ekene, “Kinect Kullanarak Fizik Tedavi ve Rehabilitasyon Amaçlı Oyun Tasarımı”, TIPTEKNO, 2015.
  • T. Nusraddinov, H.K. Ekenel, “Bilgisayar Kullanımında Göz Sağlığı için Göz Kırpmaya Dayalı Uyarı Sistemi”, TIPTEKNO, 2015.
  • B. Canak, H.K. Ekenel, "Analyzing Effects of Face Modalities", IEEE Signal Processing and Communications Applications Conference, Malatya, Turkey, May 2015.
  • H. Kaya, A.A. Salah, S.F. Gürgen, H.K. Ekenel, "Protocol and Baseline for Experiments on Bogazici University Turkish Emotional Speech Corpus", IEEE Signal Processing and Communications Applications Conference, Trabzon, Turkey, April 2014.
  • S. Kalaycı, H.K. Ekenel, H. Gunes, "Static vs. Dynamic Features for Automatic Analysis of Facial Attractiveness", IEEE Signal Processing and Communications Applications Conference, Trabzon, Turkey, April 2014.
  • M. Turan, H.K. Ekenel, “Shape-based Facial Expression Classification Using Angular Radial Transform”, IEEE Signal Processing and Communications Applications Conference, Girne, KKTC, April 2013.
  • C. Türkay, C.G. Aksakallı, K. Özmal, H.K. Ekenel, "A Mobile Plant Identification Application for Environmental Monitoring", IEEE Signal Processing and Communications Applications Conference, Girne, KKTC, April 2013.
  • N.M. Arar, H. Gao, H.K. Ekenel, L. Akarun, "Face Recognition Using Curvature Gabor Features", IEEE Signal Processing and Communications Applications Conference, Ölüdeniz, Turkey, April 2012.
  • S. Ulukaya, G. Kayım, H. K. Ekenel, "Face Recognition-based IMDB Plug-in for Movies", IEEE Signal Processing and Applications Conference, Antalya, Turkey, April 2011.
  • N.M. Arar, K. Bekmezci, F. Güney, H.K. Ekenel, "Real-time Face Swapping in Video Sequences: Magic Mirror", IEEE Signal Processing and Communications Applications Conference, Antalya, Turkey, 2011.
  • İ. Arı, H. Gao, H.K. Ekenel, L. Akarun, “Facial Expression and Head Gesture Recognition Using Temporal Self-similarity and Bag of Words of Facial Landmarks”, IEEE Signal Processing, Communication and Applications Conference, Diyarbakır, Turkey, April 2010.
  • H.K. Ekenel, M. Fischer, E. Tekeli, R. Stiefelhagen, A. Erçil, “Local Binary Pattern Domain Local Appearance Face Recognition”, IEEE Signal Processing, Communication and Applications Conference, Didim, Turkey, April 2008.
  • K. Kumatani, H.K. Ekenel, H. Gao, R. Stiefelhagen, A. Erçil, “Multi-stream Gaussian Mixture Model based Facial Feature Localization”, IEEE Signal Processing, Communication and Applications Conference, Didim, Turkey, April 2008.
  • H.K. Ekenel, R. Stiefelhagen, "Local Wavelet Analysis for Face Recognition", IEEE Signal Processing and Communications Applications Conference, Eskişehir, Turkey, June 2007.
  • H.K. Ekenel, R. Stiefelhagen, "Two-class Linear Discriminant Analysis for Face Recognition", IEEE Signal Processing and Communications Applications Conference, Eskişehir, Turkey, June 2007.
  • D. Kern, H.K. Ekenel, R. Stiefelhagen, "Illumination Subspaces based Robust Face Recognition", IEEE Signal Processing and Communications Applications Conference, Antalya, Turkey, April 2006.
  • H.K. Ekenel, S.Y. Bilgin, İ. Eden, M. Kirişçi, H. Erdoğan, A. Erçil, “Combining Face and Voice Modalities for Person Verification from Video Sequences”, IEEE Signal Processing and Communications Applications Conference, Kuşadası, Turkey, June 2004.
  • H.M. Meral, H.K. Ekenel, A.S. Özsoy, "Analysis of Emotion in Turkish", XVII. National Conference on Turkish Linguistics, Eskişehir, Turkey, May 2003. 
  • H.K. Ekenel, B. Sankur, "ICA/PCA Feature Selection for Face Recognition", IEEE Signal Processing and Communications Applications Conference, İstanbul, Turkey, June 2003.
  • H.K. Ekenel, B. Sankur, "Face Recognition Using Multiresolution Analysis", IEEE Signal Processing and Communications Applications Conference, İstanbul, Turkey, June 2003. 
  • G. Akgün, H.K. Ekenel, A. Erçil, "A Robust Object Recognition and Pose Estimation System", IEEE Signal Processing and Communications Applications Conference, İstanbul, Turkey, June 2003.
  • H.K. Ekenel, H.M. Meral, A.S. Özsoy, "Emotion Analysis from the Intonation Patterns", IEEE Signal Processing and Communications Applications Conference, İstanbul, Turkey, June 2003.
  • H.K. Ekenel, M.L. Arslan, A.S. Özsoy, "Analysis and Modeling of Turkish Intonation", XVI. National Conference on Turkish Linguistics, Ankara, Turkey, May 2002. 
  • H.K. Ekenel, M.L. Arslan, A.S. Özsoy, "Intonation Analysis for Turkish Text-to-Speech Synthesis", IEEE Signal Processing and Communications Applications Conference, Pamukkale, Turkey, June 2002.