🤖 AI Summary
The core challenge of the Audio-Driven Talking Head Animation (ADOS-THA) task lies in modeling subtle, easily overlooked motion variations between adjacent frames. To address this, we propose a Temporal Audio-Visual Association Embedding framework, which introduces— for the first time—the temporal audio-visual association metric and alignment mechanism; it leverages temporal relationships among audio segments as implicit supervision for visual generation. We further incorporate channel-attention-guided feature enhancement and jointly optimize the model via temporal audio-visual contrastive learning and cross-modal alignment loss. Evaluated on HDTF, LRW, and VoxCeleb1/2 benchmarks, our method achieves significant improvements over state-of-the-art approaches, particularly in lip-sync accuracy and facial micro-expression naturalness. These results empirically validate the effectiveness of exploiting intrinsic temporal cross-modal correlations to model inter-frame dynamics.
📝 Abstract
The paramount challenge in audio-driven One-shot Talking Head Animation (ADOS-THA) lies in capturing subtle imperceptible changes between adjacent video frames. Inherently, the temporal relationship of adjacent audio clips is highly correlated with that of the corresponding adjacent video frames, offering supplementary information that can be pivotal for guiding and supervising talking head animations. In this work, we propose to learn audio-visual correlations and integrate the correlations to help enhance feature representation and regularize final generation by a novel Temporal Audio-Visual Correlation Embedding (TAVCE) framework. Specifically, it first learns an audio-visual temporal correlation metric, ensuring the temporal audio relationships of adjacent clips are aligned with the temporal visual relationships of corresponding adjacent video frames. Since the temporal audio relationship contains aligned information about the visual frame, we first integrate it to guide learning more representative features via a simple yet effective channel attention mechanism. During training, we also use the alignment correlations as an additional objective to supervise generating visual frames. We conduct extensive experiments on several publicly available benchmarks (i.e., HDTF, LRW, VoxCeleb1, and VoxCeleb2) to demonstrate its superiority over existing leading algorithms.