Landmark-Guided Cross-Speaker Lip Reading with Mutual Information Regularization

• URL: http://arxiv.org/abs/2403.16071v2
• Date: Thu, 2 May 2024 08:53:35 GMT
• Title: Landmark-Guided Cross-Speaker Lip Reading with Mutual Information Regularization
• Authors: Linzhi Wu, Xingyu Zhang, Yakun Zhang, Changyan Zheng, Tiejun Liu, Liang Xie, Ye Yan, Erwei Yin,
• Abstract summary: We propose to exploit lip landmark-guided fine-grained visual clues instead of frequently-used mouth-cropped images as input features. A max-min mutual information regularization approach is proposed to capture speaker-insensitive latent representations.
• Score: 4.801824063852808
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Lip reading, the process of interpreting silent speech from visual lip movements, has gained rising attention for its wide range of realistic applications. Deep learning approaches greatly improve current lip reading systems. However, lip reading in cross-speaker scenarios where the speaker identity changes, poses a challenging problem due to inter-speaker variability. A well-trained lip reading system may perform poorly when handling a brand new speaker. To learn a speaker-robust lip reading model, a key insight is to reduce visual variations across speakers, avoiding the model overfitting to specific speakers. In this work, in view of both input visual clues and latent representations based on a hybrid CTC/attention architecture, we propose to exploit the lip landmark-guided fine-grained visual clues instead of frequently-used mouth-cropped images as input features, diminishing speaker-specific appearance characteristics. Furthermore, a max-min mutual information regularization approach is proposed to capture speaker-insensitive latent representations. Experimental evaluations on public lip reading datasets demonstrate the effectiveness of the proposed approach under the intra-speaker and inter-speaker conditions.

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