HMM-Based Continuous Sign Language Recognition Using Stochastic Grammars

Authors:
Hermann Hienz;Britta Bauer;Karl-Friedrich Kraiss
Affiliations:
-;-;-
Venue:
GW '99 Proceedings of the International Gesture Workshop on Gesture-Based Communication in Human-Computer Interaction
Year:
1999

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Abstract

This paper describes the development of a video-based continuous sign language recognition system using Hidden Markov Models (HMM). The system aims for automatic signer dependent recognition of sign language sentences, based on a lexicon of 52 signs of German Sign Language. A single colour video camera is used for image recording. The recognition is based on Hidden Markov Models concentrating on manual sign parameters. As an additional component, a stochastic language model is utilised, which considers uni- and bigram probabilities of single and successive signs. The system achieves an accuracy of 95% using a bigram language model.