The NPU-ASLP-LiAuto System Description for Visual Speech Recognition in CNVSRC 2023

• URL: http://arxiv.org/abs/2401.06788v2
• Date: Thu, 29 Feb 2024 18:09:40 GMT
• Title: The NPU-ASLP-LiAuto System Description for Visual Speech Recognition in CNVSRC 2023
• Authors: He Wang, Pengcheng Guo, Wei Chen, Pan Zhou, Lei Xie
• Abstract summary: This paper delineates the visual speech recognition (VSR) system introduced by the NPU-ASLP-LiAuto (Team 237) in the first Chinese Continuous Visual Speech Recognition Challenge (CNVSRC) 2023. In terms of data processing, we leverage the lip motion extractor from the baseline1 to produce multi-scale video data. Various augmentation techniques are applied during training, encompassing speed perturbation, random rotation, horizontal flipping, and color transformation.
• Score: 67.11294606070278
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: This paper delineates the visual speech recognition (VSR) system introduced by the NPU-ASLP-LiAuto (Team 237) in the first Chinese Continuous Visual Speech Recognition Challenge (CNVSRC) 2023, engaging in the fixed and open tracks of Single-Speaker VSR Task, and the open track of Multi-Speaker VSR Task. In terms of data processing, we leverage the lip motion extractor from the baseline1 to produce multi-scale video data. Besides, various augmentation techniques are applied during training, encompassing speed perturbation, random rotation, horizontal flipping, and color transformation. The VSR model adopts an end-to-end architecture with joint CTC/attention loss, comprising a ResNet3D visual frontend, an E-Branchformer encoder, and a Transformer decoder. Experiments show that our system achieves 34.76% CER for the Single-Speaker Task and 41.06% CER for the Multi-Speaker Task after multi-system fusion, ranking first place in all three tracks we participate.

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