InterActHuman: Multi-Concept Human Animation with Layout-Aligned Audio
  Conditions
Authors: name: Zhenzhi Wang, name: Jiaqi Yang, name: Jianwen Jiang, name: Chao Liang, name: Gaojie Lin, name: Zerong Zheng, name: Ceyuan Yang, name: Dahua Lin

End-to-end human animation with rich multi-modal conditions, e.g., text,
image and audio has achieved remarkable advancements in recent years. However,
most existing methods could only animate a single subject and inject conditions
in a global manner, ignoring scenarios that multiple concepts could appears in
the same video with rich human-human interactions and human-object
interactions. Such global assumption prevents precise and per-identity control
of multiple concepts including humans and objects, therefore hinders
applications. In this work, we discard the single-entity assumption and
introduce a novel framework that enforces strong, region-specific binding of
conditions from modalities to each identity's spatiotemporal footprint. Given
reference images of multiple concepts, our method could automatically infer
layout information by leveraging a mask predictor to match appearance cues
between the denoised video and each reference appearance. Furthermore, we
inject local audio condition into its corresponding region to ensure
layout-aligned modality matching in a iterative manner. This design enables the
high-quality generation of controllable multi-concept human-centric videos.
Empirical results and ablation studies validate the effectiveness of our
explicit layout control for multi-modal conditions compared to implicit
counterparts and other existing methods.