In this paper we evaluate the performance of Conditional Random Fields (CRF) and Hidden Markov Models when recognizing motion based gestures in sign language. We implement CRF, Hidden CRF and Latent-Dynamic CRF based systems and compare these to a HMM based system when recognizing motion gestures and identifying inter gesture transitions. We implement a extension to the standard HMM model to develop a threshold HMM framework which is specifically designed to identify inter gesture transitions. We evaluate the performance of this system, and the different CRF systems, when recognizing gestures and identifying inter gesture transitions.
Ireland ->
Maynooth University ->
Type = Book Section
Ireland ->
Maynooth University ->
Academic Unit = Faculty of Science and Engineering
Ireland ->
Maynooth University ->
Status = Published
Ireland ->
Maynooth University ->
Open Access DRIVERset
Ireland ->
Maynooth University ->
Academic Unit = Faculty of Science and Engineering: Computer Science
Charles Markham,
John McDonald,
Daniel Kelly