Automatic Detection and Classification of Head Movements in Face-to-Face Conversations

Patrizia Paggio, Manex Agirrezabal, Bart Jongejan, Costanza Navarretta


Abstract
This paper presents an approach to automatic head movement detection and classification in data from a corpus of video-recorded face-to-face conversations in Danish involving 12 different speakers. A number of classifiers were trained with different combinations of visual, acoustic and word features and tested in a leave-one-out cross validation scenario. The visual movement features were extracted from the raw video data using OpenPose, and the acoustic ones using Praat. The best results were obtained by a Multilayer Perceptron classifier, which reached an average 0.68 F1 score across the 12 speakers for head movement detection, and 0.40 for head movement classification given four different classes. In both cases, the classifier outperformed a simple most frequent class baseline as well as a more advanced baseline only relying on velocity features.
Anthology ID:
2020.onion-1.3
Volume:
Proceedings of LREC2020 Workshop "People in language, vision and the mind" (ONION2020)
Month:
May
Year:
2020
Address:
Marseille, France
Venues:
LREC | ONION | WS
SIG:
Publisher:
European Language Resources Association (ELRA)
Note:
Pages:
15–21
Language:
English
URL:
https://www.aclweb.org/anthology/2020.onion-1.3
DOI:
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PDF:
http://aclanthology.lst.uni-saarland.de/2020.onion-1.3.pdf