A joint particle filter for audio-visual speaker tracking. - Kai Nickel; Tobias Gehrig; Rainer Stiefelhagen; John W. McDonough (ICMI, 2005)

Multi-and Single View Multiperson Tracking for Smart Room Environments. - Keni Bernardin; Tobias Gehrig; Rainer Stiefelhagen (CLEAR, 2006)

Tracking Multiple Speakers with Probabilistic Data Association Filters. - Tobias Gehrig; John W. McDonough (CLEAR, 2006)

An Audio-Visual Particle Filter for Speaker Tracking on the CLEAR'06 Evaluation Dataset. - Kai Nickel; Tobias Gehrig; Hazim Kemal Ekenel; John W. McDonough; Rainer Stiefelhagen (CLEAR, 2006)

Tracking and beamforming for multiple simultaneous speakers with probabilistic data association filters. - Tobias Gehrig; Ulrich Klee; John W. McDonough; Shajith Ikbal; Matthias Wölfel; Christian Fügen (INTERSPEECH, 2006)

Kalman Filters for Time Delay of Arrival-Based Source Localization. - Ulrich Klee; Tobias Gehrig; John W. McDonough (EURASIP J. Adv. Signal Process., 2006)

Minimum mutual information beamforming for simultaneous active speakers. - Ken'ichi Kumatani; Uwe Mayer; Tobias Gehrig; Emilian Stoimenov; John W. McDonough; Matthias Wölfel (ASRU, 2007)

Multi-level Particle Filter Fusion of Features and Cues for Audio-Visual Person Tracking. - Keni Bernardin; Tobias Gehrig; Rainer Stiefelhagen (CLEAR, 2007)

To Separate Speech. - John W. McDonough; Ken'ichi Kumatani; Tobias Gehrig; Emilian Stoimenov; Uwe Mayer; Stefan Schacht; Matthias Wölfel; Dietrich Klakow (MLMI, 2007)

Adaptive Beamforming With a Minimum Mutual Information Criterion. - Ken'ichi Kumatani; Tobias Gehrig; Uwe Mayer; Emilian Stoimenov; John W. McDonough; Matthias Wölfel (IEEE Trans. Speech Audio Process., 2007)

Recognition of surgical skills using hidden Markov models. - Stefanie Speidel; Tom Zentek; Gunther Sudra; Tobias Gehrig; Beat Peter Müller-Stich; Carsten N. Gutt; Rüdiger Dillmann (Image-Guided Procedures, 2009)

Evaluation of a Navigation System for Minimally Invasive Esophagectomy in a Porcine Model. - Felix Nickel; Hannes Kenngott; Jochen Neuhaus; Armin Kolb; Christof M. Sommer; Tobias Gehrig; Boris A. Radeleff; Hans-Peter Meinzer; Carsten N. Gutt; Beat Peter Müller-Stich (CURAC, 2010)

Respiratory Organ Motion of the Esophagus and Motion Correlation with Skin Markers in a Porcine Model for Image-Guided Procedures. - Felix Nickel; Hannes Götz Kenngott; Jochen Neuhaus; Johannes Käst; Christof M. Sommer; Armin Kolb; Tobias Gehrig; Boris A. Radeleff; Anja Schaible; Hans-Peter Meinzer; Carsten N. Gutt; Beat Peter Müller-Stich (CURAC, 2010)

Quaero at TRECVID 2010: Semantic Indexing. - Bahjat Safadi; Yubing Tong; Franck Thollard; Georges Quénot; Tobias Gehrig; Hazim Kemal Ekenel; Rainer Stiefelhagen (TRECVID, 2010)

A common framework for real-time emotion recognition and facial action unit detection. - Tobias Gehrig; Hazim Kemal Ekenel (CVPR Workshops, 2011)

Facial action unit detection using kernel partial least squares. - Tobias Gehrig; Hazim Kemal Ekenel (ICCV Workshops, 2011)

Quaero at TRECVID 2011: Semantic Indexing and Multimedia Event Detection. - Bahjat Safadi; Nadia Derbas; Abdelkader Hamadi; Franck Thollard; Georges Quénot; Hervé Jégou; Tobias Gehrig; Hazim Kemal Ekenel; Rainer Stiefelhagen (TRECVID, 2011)

Multi-view facial expression recognition using local appearance features. - Nikolas Hesse; Tobias Gehrig; Hua Gao; Hazim Kemal Ekenel (ICPR, 2012)

Facial expression classification on web images. - Matthias Richter 003; Tobias Gehrig; Hazim Kemal Ekenel (ICPR, 2012)

Quaero at TRECVID 2012: Semantic Indexing. - Bahjat Safadi; Nadia Derbas; Abdelkader Hamadi; Franck Thollard; Georges Quénot; Jonathan Delhumeau; Hervé Jégou; Tobias Gehrig; Hazim Kemal Ekenel; Rainer Stiefelhagen (TRECVID, 2012)

Why is facial expression analysis in the wild challenging? - Tobias Gehrig; Hazim Kemal Ekenel (EmotiW@ICMI, 2013)

Learning Semantic Attributes via a Common Latent Space. - Ziad Al-Halah; Tobias Gehrig; Rainer Stiefelhagen (VISAPP (2), 2014)

Action unit intensity estimation using hierarchical partial least squares. - Tobias Gehrig; Ziad Al-Halah; Hazim Kemal Ekenel; Rainer Stiefelhagen (FG, 2015)