Talking Head Generation with Probabilistic Audio-to-Visual Diffusion Priors

• URL: http://arxiv.org/abs/2212.04248v1
• Date: Wed, 7 Dec 2022 17:55:41 GMT
• Title: Talking Head Generation with Probabilistic Audio-to-Visual Diffusion Priors
• Authors: Zhentao Yu, Zixin Yin, Deyu Zhou, Duomin Wang, Finn Wong, Baoyuan Wang
• Abstract summary: We introduce a simple and novel framework for one-shot audio-driven talking head generation. We probabilistically sample all the holistic lip-irrelevant facial motions to semantically match the input audio. Thanks to the probabilistic nature of the diffusion prior, one big advantage of our framework is it can synthesize diverse facial motion sequences.
• Score: 18.904856604045264
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: In this paper, we introduce a simple and novel framework for one-shot audio-driven talking head generation. Unlike prior works that require additional driving sources for controlled synthesis in a deterministic manner, we instead probabilistically sample all the holistic lip-irrelevant facial motions (i.e. pose, expression, blink, gaze, etc.) to semantically match the input audio while still maintaining both the photo-realism of audio-lip synchronization and the overall naturalness. This is achieved by our newly proposed audio-to-visual diffusion prior trained on top of the mapping between audio and disentangled non-lip facial representations. Thanks to the probabilistic nature of the diffusion prior, one big advantage of our framework is it can synthesize diverse facial motion sequences given the same audio clip, which is quite user-friendly for many real applications. Through comprehensive evaluations on public benchmarks, we conclude that (1) our diffusion prior outperforms auto-regressive prior significantly on almost all the concerned metrics; (2) our overall system is competitive with prior works in terms of audio-lip synchronization but can effectively sample rich and natural-looking lip-irrelevant facial motions while still semantically harmonized with the audio input.

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