M. Andriluka, S. Roth, and B. Schiele, Monocular 3D pose estimation and tracking by detection, 2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition, pp.623-630, 2010.
DOI : 10.1109/CVPR.2010.5540156

URL : http://lmb.informatik.uni-freiburg.de/lectures/seminar_brox/seminar_ws1011/cvpr10_andriluka.pdf

D. Baltieri, R. Vezzani, C. , and R. , People Orientation Recognition by Mixtures of Wrapped Distributions on Random Trees, European Conference in Computer Vision (ECCV), pp.270-283, 2012.
DOI : 10.1007/978-3-642-33715-4_20

L. Bazzani, M. Cristani, D. Tosato, M. Farenzena, G. Paggetti et al., Social interactions by visual focus of attention in a three-dimensional environment, Expert Systems, vol.82, issue.2, pp.115-127, 2013.
DOI : 10.1007/s11263-008-0194-9

L. Bourdev and J. Brandt, Robust Object Detection via Soft Cascade, 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05), pp.236-243, 2005.
DOI : 10.1109/CVPR.2005.310

URL : http://www.lubomir.org/academic/softcascade.pdf

C. Chen, A. Heili, and J. Odobez, Combined estimation of location and body pose in surveillance video, 2011 8th IEEE International Conference on Advanced Video and Signal Based Surveillance (AVSS), pp.5-10, 2011.
DOI : 10.1109/AVSS.2011.6027284

N. Dalal and B. Triggs, Histograms of Oriented Gradients for Human Detection, 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'05), pp.886-893, 2005.
DOI : 10.1109/CVPR.2005.177

URL : https://hal.archives-ouvertes.fr/inria-00548512

P. Dollár, R. Appel, S. Belongie, and P. Perona, Fast Feature Pyramids for Object Detection, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.36, issue.8, pp.1532-1545, 2014.
DOI : 10.1109/TPAMI.2014.2300479

P. Dollár, C. Wojek, B. Schiele, and P. Perona, Pedestrian Detection: An Evaluation of the State of the Art, IEEE Transactions on Pattern Analysis and Machine Intelligence, vol.34, issue.4, pp.743-761, 2012.
DOI : 10.1109/TPAMI.2011.155

M. Eichner, M. Marin-jimenez, A. Zisserman, and V. Ferrari, 2D Articulated Human Pose Estimation and Retrieval in (Almost) Unconstrained Still Images, International Journal of Computer Vision, vol.61, issue.1, pp.99190-214, 2012.
DOI : 10.1023/B:VISI.0000042934.15159.49

M. Everingham, L. Van-gool, C. K. Williams, J. Winn, and A. Zisserman, The Pascal Visual Object Classes (VOC) Challenge, International Journal of Computer Vision, vol.73, issue.2, pp.303-338, 2010.
DOI : 10.1371/journal.pcbi.0040027

V. Ferrari, M. Marin-jimenez, and A. Zisserman, Progressive search space reduction for human pose estimation, 2008 IEEE Conference on Computer Vision and Pattern Recognition, pp.1-8, 2008.
DOI : 10.1109/CVPR.2008.4587468

R. Hu, R. Wang, S. Shan, C. , and X. , Robust Head-Shoulder Detection Using a Two-Stage Cascade Framework, 2014 22nd International Conference on Pattern Recognition, 2014.
DOI : 10.1109/ICPR.2014.482

O. H. Jafari, D. Mitzel, and B. Leibek, Real-time RGB-D based people detection and tracking for mobile robots and head-worn cameras, 2014 IEEE International Conference on Robotics and Automation (ICRA), 2014.
DOI : 10.1109/ICRA.2014.6907688

M. Katzenmaier, R. Stiefelhagen, and T. Schultz, Identifying the addressee in human-human-robot interactions based on head pose and speech, Proceedings of the 6th international conference on Multimodal interfaces , ICMI '04, pp.144-151, 2004.
DOI : 10.1145/1027933.1027959

M. Li, Z. Zhang, K. Huang, and T. Tan, Rapid and robust human detection and tracking based on omegashape features, International Conference on Image Processing (ICIP), pp.2545-2548, 2009.

S. Sheikhi and J. Odobez, Recognizing the Visual Focus of Attention for Human Robot Interaction, Human Behavior Understanding, pp.99-112, 2012.
DOI : 10.1007/978-3-642-34014-7_9

P. Viola and M. Jones, Rapid object detection using a boosted cascade of simple features, Proceedings of the 2001 IEEE Computer Society Conference on Computer Vision and Pattern Recognition. CVPR 2001, p.511, 2001.
DOI : 10.1109/CVPR.2001.990517

C. Weinrich, C. Vollmer, and H. Gross, Estimation of human upper body orientation for mobile robotics using an SVM decision tree on monocular images, 2012 IEEE/RSJ International Conference on Intelligent Robots and Systems, pp.2147-2152, 2012.
DOI : 10.1109/IROS.2012.6386122

J. Wright, A. Y. Yang, A. Ganesh, S. S. Sastry, M. et al., Robust face recognition via sparse representation, IEEE Transactions on Pattern Analysis and Machine Intelligence, issue.2, pp.31210-227, 2009.
DOI : 10.1109/tpami.2008.79

URL : http://www.csee.wvu.edu/~xinl/courses/ee565/PAMIface.pdf

C. Zeng and H. Ma, Robust Head-Shoulder Detection by PCA-Based Multilevel HOG-LBP Detector for People Counting, 2010 20th International Conference on Pattern Recognition, pp.2069-2072, 2010.
DOI : 10.1109/ICPR.2010.509