Audiovisual synchrony detection with optimized audio features

Sieranoja, Sami; Kinnunen, Tomi; Komulainen, Jukka; Hadid, Abdenour (2019-01-03)
 
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https://doi.org/10.1109/SIPROCESS.2018.8600424

Sieranoja, Sami
Kinnunen, Tomi
Komulainen, Jukka
Hadid, Abdenour
Institute of Electrical and Electronics Engineers
03.01.2019

S. Sieranoja, M. Sahidullah, T. Kinnunen, J. Komulainen and A. Hadid, "Audiovisual Synchrony Detection with Optimized Audio Features," 2018 IEEE 3rd International Conference on Signal and Image Processing (ICSIP), Shenzhen, 2018, pp. 377-381, https://doi.org/10.1109/SIPROCESS.2018.8600424

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doi:https://doi.org/10.1109/SIPROCESS.2018.8600424
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Abstract

Audiovisual speech synchrony detection is an important part of talking-face verification systems. Prior work has primarily focused on visual features and joint-space models, while standard mel-frequency cepstral coefficients (MFCCs) have been commonly used to present speech. We focus more closely on audio by studying the impact of context window length for delta feature computation and comparing MFCCs with simpler energy-based features in lip-sync detection. We select state-of-the-art hand-crafted lip-sync visual features, space-time auto-correlation of gradients (STACOG), and canonical correlation analysis (CCA), for joint-space modeling. To enhance joint space modeling, we adopt deep CCA (DCCA), a nonlinear extension of CCA. Our results on the XM2VTS data indicate substantially enhanced audiovisual speech synchrony detection, with an equal error rate (EER) of 3.68%. Further analysis reveals that failed lip region localization and beardedness of the subjects constitutes most of the errors. Thus, the lip motion description is the bottleneck, while the use of novel audio features or joint-modeling techniques is unlikely to boost lip-sync detection accuracy further.

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