@INPROCEEDINGS{sigalas14, author={Sigalas, M. and Pateraki, M. and Trahanias, P.}, booktitle={Intelligent Robots and Systems (IROS 2014), 2014 IEEE/RSJ International Conference on}, title={Robust articulated upper body pose tracking under severe occlusions}, year={2014}, month={Sept}, pages={4104-4111}, keywords={control engineering computing;human-robot interaction;image colour analysis;image segmentation;image sensors;middleware;object tracking;particle filtering (numerical methods);pose estimation;robot vision;3D torso pose;NiTETM user generator middleware;RGB-D sequences;articulated human body tracking;ground truth data;human arm kinematic model;human robot interaction;hypothesized view;interpersonal occlusions;intrapersonal occlusions;low-cost real-time depth cameras;main torso axis;markerless pose detection;markerless pose tracking;model-based approach;observed scene data;open-ended problem;ordered rendering;particle filters;pose initialization processes;robust articulated upper body pose tracking;segmentation processes;severe occlusions;virtual user top view;Cameras;Elbow;Estimation;Kinematics;Shoulder;Three-dimensional displays;Torso}, doi={10.1109/IROS.2014.6943140},}