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Cited by 537

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Extraction of visual features for lipreading

Matthews, I., Cootes, T.F., Bangham, J.A., Cox, S., Harvey, R.·2002·IEEE Transactions on Pattern Analysis and Machine Intelligence

Abstract

The multimodal nature of speech is often ignored in human-computer interaction, but lip deformations and other body motion, such as those of the head, convey additional information. We integrate speech cues from many sources and this improves intelligibility, especially when the acoustic signal is degraded. The paper shows how this additional, often complementary, visual speech information can be used for speech recognition. Three methods for parameterizing lip image sequences for recognition using hidden Markov models are compared. Two of these are top-down approaches that fit a model of the inner and outer lip contours and derive lipreading features from a principal component analysis of shape or shape and appearance, respectively. The third, bottom-up, method uses a nonlinear scale-space analysis to form features directly from the pixel intensity. All methods are compared on a multitalker visual speech recognition task of isolated letters.

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Metadata

Authors
Matthews, I., Cootes, T. F., Bangham, J. A., Cox, S., & Harvey, R.
Venue
IEEE Transactions on Pattern Analysis and Machine Intelligence
Published
2002
Volume
24
Issue
2
Pages
198-213
ISSN
0162-8828 (ISSN-L)
OpenAlex
W2113814270
Cited by
537
References
6
FWCI
20.90
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Extraction of visual features for lipreading. https://app.cochat.ai/papers/10.1109/34.982900
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Matthews, I., Cootes, T. F., Bangham, J. A., Cox, S., & Harvey, R. (2002). Extraction of visual features for lipreading. IEEE Transactions on Pattern Analysis and Machine Intelligence. https://doi.org/10.1109/34.982900

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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