From the publication, “Video-Driven Speech Reconstruction using Generative Adversarial Networks”. https://arxiv.org/abs/1906.06301
Last year the iBUG group out of the Imperial College London and the Samsung AI Centre published a paper on speech reconstruction from video. The model presented is novel in its ability to generate interpretable speech from video only of previously unseen participants. The main ML engine for the workflow is the Wasserstein GAN and is part of a collection of networks working together to generate speech. The model is composed of three parts: the generator network, the critic which forces the generation of ‘natural’ sounding waveforms, and a speech encoder.
The generator network…is responsible for transforming the sequence of video frames into a waveform. During the training phase the critic network drives the generator to produce waveforms that sound similar to natural speech. Finally, a pretrained speech encoder is used to conserve the speech content of the waveform.
The model is trained on the GRID dataset which is a freely available audiovisual corpus of participants reading sentences. The model was evaluated based on “sound quality” and on “accuracy of the spoken words”. They also posted videos of model performance and comparisons with another recent framework/model Lip2AudSpec with quite impressive results.
If you’d like to learn more about the authors checkouttheirpages on iBUG. If you’d like to check out their work you can find the first and second authors on GitHub. Aaaand…if you’re still interested in more lip reading fun, take a look at this video of Rasputin killing it at some Beyoncé karaoke.
Written by Rebecca Minich, Product Analyst, Data Science at Google. Opinions expressed are solely my own and do not express the views or opinions of my employer.
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