Evaluation of Co-Speech Gesture Tracking Techniques in Naturalistic Interactions

Victoria Ivanova, Naomi Harte


Abstract
Hand gestures convey a significant portion of communicative meaning, making multimodal datasets essential for interaction research. However, annotating gestures remains a time-consuming and challenging task. To speed up the process, semi-automatic methods have been developed that identify segments with hand movement for annotators to refine. These typically combine a pose estimation model with a rule-based or statistical movement detection algorithm. However, most are validated on idealised, non-naturalistic datasets with minimal hand occlusions. We benchmark combinations of four pose estimation methods (OpenPose, MediaPipe, DeepLabCut, and Kinect) and two rule-based movement detection algorithms on two naturalistic, conversational datasets. The best pipelines combine the SPUDNIG displacement algorithm with OpenPose on MULTISIMO and with DeepLabCut on ECOLANG. These pipelines achieved Tversky scores of 0.57 on MULTISIMO and 0.65 on ECOLANG, with recall scores of 0.73 and 0.78, respectively. While off-the-shelf gesture detection systems can support annotation, performance remains limited on naturalistic data, and careful camera setup minimizing occlusions is essential.
Anthology ID:
2026.lrec-1.497
Volume:
Proceedings of the Fifteenth Language Resources and Evaluation Conference
Month:
May
Year:
2026
Address:
Palma de Mallorca, Spain
Editors:
Stelios Piperidis, Núria Bel, Henk van den Heuvel, Nancy Ide, Simon Krek, Antonio Toral
Venue:
LREC
SIG:
Publisher:
ELRA Language Resource Association
Note:
Pages:
6277–6288
Language:
External URL:
https://lrec.elra.info/lrec2026-main-497
DOI:
10.63317/2k233c5pnfsi
Bibkey:
Cite (ACL):
Victoria Ivanova and Naomi Harte. 2026. Evaluation of Co-Speech Gesture Tracking Techniques in Naturalistic Interactions. In Proceedings of the Fifteenth Language Resources and Evaluation Conference, pages 6277–6288, Palma de Mallorca, Spain. ELRA Language Resource Association.
Cite (Informal):
Evaluation of Co-Speech Gesture Tracking Techniques in Naturalistic Interactions (Ivanova & Harte, LREC 2026)
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