Evolution and Trends in Sign Language Avatar Systems: Unveiling a 40-Year Journey via Systematic Review

Author:

Aziz Maryam1,Othman Achraf1ORCID

Affiliation:

1. Mada—Assistive Technology Center Qatar, Doha P.O. Box 24230, Qatar

Abstract

Sign language (SL) avatar systems aid communication between the hearing and deaf communities. Despite technological progress, there is a lack of a standardized avatar development framework. This paper offers a systematic review of SL avatar systems spanning from 1982 to 2022. Using PRISMA guidelines, we shortlisted 47 papers from an initial 1765, focusing on sign synthesis techniques, corpora, design strategies, and facial expression methods. We also discuss both objective and subjective evaluation methodologies. Our findings highlight key trends and suggest new research avenues for improving SL avatars.

Publisher

MDPI AG

Subject

Computer Networks and Communications,Computer Science Applications,Human-Computer Interaction,Neuroscience (miscellaneous)

Reference103 articles.

1. World Health Organization (2023, May 28). Deafness and Hearing Loss. Available online: https://www.who.int/news-room/fact-sheets/detail/deafness-and-hearing-loss.

2. United Nations (2023, May 28). International Day of Sign Languages. Available online: https://www.un.org/en/observances/sign-languages-day.

3. Communication methods between physicians and Deaf patients: A scoping review;Yet;Patient Educ. Couns.,2022

4. Attitudes toward Signing Avatars Vary Depending on Hearing Status, Age of Signed Language Acquisition, and Avatar Type;Quandt;Front. Psychol.,2022

5. A survey on the animation of signing avatars: From sign representation to utterance synthesis;Naert;Comput. Graph.,2020

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