Comparing Speaker Adaptation Methods for Visual Speech Recognition for Continuous Spanish

Visual speech recognition (VSR) is a challenging task that aims to interpret speech based solely on lip movements. However, although remarkable results have recently been reached in the field, this task remains an open research problem due to different challenges, such as visual ambiguities, the int...

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Main Authors: David Gimeno-Gómez, Carlos-D. Martínez-Hinarejos
Format: Article
Language:English
Published: MDPI AG 2023-05-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/13/11/6521
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author David Gimeno-Gómez
Carlos-D. Martínez-Hinarejos
author_facet David Gimeno-Gómez
Carlos-D. Martínez-Hinarejos
author_sort David Gimeno-Gómez
collection DOAJ
description Visual speech recognition (VSR) is a challenging task that aims to interpret speech based solely on lip movements. However, although remarkable results have recently been reached in the field, this task remains an open research problem due to different challenges, such as visual ambiguities, the intra-personal variability among speakers, and the complex modeling of silence. Nonetheless, these challenges can be alleviated when the task is approached from a speaker-dependent perspective. Our work focuses on the adaptation of end-to-end VSR systems to a specific speaker. Hence, we propose two different adaptation methods based on the conventional fine-tuning technique, the so-called Adapters. We conduct a comparative study in terms of performance while considering different deployment aspects such as training time and storage cost. Results on the Spanish LIP-RTVE database show that both methods are able to obtain recognition rates comparable to the state of the art, even when only a limited amount of training data is available. Although it incurs a deterioration in performance, the Adapters-based method presents a more scalable and efficient solution, significantly reducing the training time and storage cost by up to 80%.
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spelling doaj.art-8285a445ac6748b9a21025c5c8721e392023-11-18T07:33:14ZengMDPI AGApplied Sciences2076-34172023-05-011311652110.3390/app13116521Comparing Speaker Adaptation Methods for Visual Speech Recognition for Continuous SpanishDavid Gimeno-Gómez0Carlos-D. Martínez-Hinarejos1Pattern Recognition and Human Language Technologies Research Center, Universitat Politècnica de València, Camino de Vera, s/n, 46022 València, SpainPattern Recognition and Human Language Technologies Research Center, Universitat Politècnica de València, Camino de Vera, s/n, 46022 València, SpainVisual speech recognition (VSR) is a challenging task that aims to interpret speech based solely on lip movements. However, although remarkable results have recently been reached in the field, this task remains an open research problem due to different challenges, such as visual ambiguities, the intra-personal variability among speakers, and the complex modeling of silence. Nonetheless, these challenges can be alleviated when the task is approached from a speaker-dependent perspective. Our work focuses on the adaptation of end-to-end VSR systems to a specific speaker. Hence, we propose two different adaptation methods based on the conventional fine-tuning technique, the so-called Adapters. We conduct a comparative study in terms of performance while considering different deployment aspects such as training time and storage cost. Results on the Spanish LIP-RTVE database show that both methods are able to obtain recognition rates comparable to the state of the art, even when only a limited amount of training data is available. Although it incurs a deterioration in performance, the Adapters-based method presents a more scalable and efficient solution, significantly reducing the training time and storage cost by up to 80%.https://www.mdpi.com/2076-3417/13/11/6521visual speech recognitionspeaker adaptationfine-tuningAdaptersSpanish languageend-to-end architectures
spellingShingle David Gimeno-Gómez
Carlos-D. Martínez-Hinarejos
Comparing Speaker Adaptation Methods for Visual Speech Recognition for Continuous Spanish
Applied Sciences
visual speech recognition
speaker adaptation
fine-tuning
Adapters
Spanish language
end-to-end architectures
title Comparing Speaker Adaptation Methods for Visual Speech Recognition for Continuous Spanish
title_full Comparing Speaker Adaptation Methods for Visual Speech Recognition for Continuous Spanish
title_fullStr Comparing Speaker Adaptation Methods for Visual Speech Recognition for Continuous Spanish
title_full_unstemmed Comparing Speaker Adaptation Methods for Visual Speech Recognition for Continuous Spanish
title_short Comparing Speaker Adaptation Methods for Visual Speech Recognition for Continuous Spanish
title_sort comparing speaker adaptation methods for visual speech recognition for continuous spanish
topic visual speech recognition
speaker adaptation
fine-tuning
Adapters
Spanish language
end-to-end architectures
url https://www.mdpi.com/2076-3417/13/11/6521
work_keys_str_mv AT davidgimenogomez comparingspeakeradaptationmethodsforvisualspeechrecognitionforcontinuousspanish
AT carlosdmartinezhinarejos comparingspeakeradaptationmethodsforvisualspeechrecognitionforcontinuousspanish