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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Connell, J.H. Haas, N. Marcheret, E. Neti, C. Potamianos, G. Velipasalar, S. |
| Copyright Year | 2003 |
| Description | Author affiliation: IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA (Connell, J.H.; Haas, N.; Marcheret, E.; Neti, C.; Potamianos, G.; Velipasalar, S.) |
| Abstract | We present a prototype for the automatic recognition of audio-visual speech, developed to augment the IBM ViaVoice/spl trade/ speech recognition system. Frontal face, full frame video is captured through a USB 2.0 interface by means of an inexpensive PC camera, and processed to obtain appearance-based visual features. Subsequently, these are combined with audio features, synchronously extracted from the acoustic signal, using a simple discriminant feature fusion technique. On the average, the required computations utilize approximately 67% of a Pentium/spl trade/ 4, 1.8 GHz processor, leaving the remaining resources available to hidden Markov model based speech recognition. Real-time performance is there- fore achieved for small-vocabulary tasks, such as connected-digit recognition. In the paper, we discuss the prototype architecture based on the ViaVoice engine, the basic algorithms employed, and their necessary modifications to ensure real-time performance and causality of the visual front end processing. We benchmark the resulting system performance on stored videos against prior research experiments, and we report a close match between the two. |
| Sponsorship | IEEE Signal Process. Soc., Comput. Soc., Circuits & Syst. Soc, Commun. Soc |
| File Size | 391227 |
| File Format | |
| ISBN | 0780379659 |
| DOI | 10.1109/ICME.2003.1221655 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2003-07-06 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Prototypes Automatic speech recognition Speech recognition Universal Serial Bus Cameras Feature extraction Hidden Markov models Computer architecture Engines System performance |
| Content Type | Text |
| Resource Type | Article |
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