Generating Sign Language Poses from HamNoSys and Natural Language Descriptions

Santiago Máximo, Luis Chiruzzo


Abstract
One of the steps involved in the process of sign language generation is generating a sequence of poses that represent the signs. This paper presents a method for using textual information to improve the translation of signs in HamNoSys format into sequences of poses. The method comprises a description generator that translates HamNoSys into a textual description, an LLM fine-tuned to the task of predicting a pose sequence from a HamNoSys description, and a VQ-VAE network that encodes and decodes pose sequences as a list of discrete symbols. Our experiments found that even using simple dictionary descriptions of HamNoSys, it is possible to improve the predictions of pose sequences by leveraging the information from a pretrained LLM.
Anthology ID:
2026.lrec-1.735
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:
9358–9367
Language:
External URL:
https://lrec.elra.info/lrec2026-main-735
DOI:
10.63317/466di7tv7dpd
Bibkey:
Cite (ACL):
Santiago Máximo and Luis Chiruzzo. 2026. Generating Sign Language Poses from HamNoSys and Natural Language Descriptions. In Proceedings of the Fifteenth Language Resources and Evaluation Conference, pages 9358–9367, Palma de Mallorca, Spain. ELRA Language Resource Association.
Cite (Informal):
Generating Sign Language Poses from HamNoSys and Natural Language Descriptions (Máximo & Chiruzzo, LREC 2026)
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