caa a22 4500 605447756 CHVBK 20210128100133.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s11042-014-1869-6 doi (NATIONALLICENCE)springer-10.1007/s11042-014-1869-6 A survey on facial expression recognition in 3D video sequences [Elektronische Daten] [Antonios Danelakis, Theoharis Theoharis, Ioannis Pratikakis] Facial expression recognition constitutes an active research area due to its various applications. This survey addresses methodologies for 3D mesh video facial expression recognition. Recognition is, actually, a special case of intra-class retrieval. The approaches are analyzed and compared in detail. They are primarily categorized according to the 3D dynamic face analysis technique used. In addition, currently available datasets, used for 3D video facial expression analysis, are presented. Finally, future challenges that can be addressed in order for 3D video facial expression recognition field to be further improved, are extensively discussed. Springer Science+Business Media New York, 2014 3 D mesh video nationallicence 3 D dynamic facial meshes nationallicence 3 D video facial expression recognition nationallicence Danelakis Antonios Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece aut Theoharis Theoharis Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece aut Pratikakis Ioannis Department of Electrical and Computer Engineering, Democritus University of Thrace, Thrace, Greece aut Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/15(2015-08-01), 5577-5615 1380-7501 74:15<5577 2015 74 11042 https://doi.org/10.1007/s11042-014-1869-6 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11042-014-1869-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Danelakis Antonios Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece aut NATIONALLICENCE 700 1- Theoharis Theoharis Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Athens, Greece aut NATIONALLICENCE 700 1- Pratikakis Ioannis Department of Electrical and Computer Engineering, Democritus University of Thrace, Thrace, Greece aut NATIONALLICENCE 773 0- Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/15(2015-08-01), 5577-5615 1380-7501 74:15<5577 2015 74 11042