OmniHuman-1: Rethinking the Scaling-Up of One-Stage Conditioned Human
  Animation Models
Authors: name: Gaojie Lin; name: Jianwen Jiang; name: Jiaqi Yang; name: Zerong Zheng; name: Chao Liang
Published: 2025-02-03 05:17:32

Abstract: End-to-end human animation, such as audio-driven talking human generation,
has undergone notable advancements in the recent few years. However, existing
methods still struggle to scale up as large general video generation models,
limiting their potential in real applications. In this paper, we propose
OmniHuman, a Diffusion Transformer-based framework that scales up data by
mixing motion-related conditions into the training phase. To this end, we
introduce two training principles for these mixed conditions, along with the
corresponding model architecture and inference strategy. These designs enable
OmniHuman to fully leverage data-driven motion generation, ultimately achieving
highly realistic human video generation. More importantly, OmniHuman supports
various portrait contents (face close-up, portrait, half-body, full-body),
supports both talking and singing, handles human-object interactions and
challenging body poses, and accommodates different image styles. Compared to
existing end-to-end audio-driven methods, OmniHuman not only produces more
realistic videos, but also offers greater flexibility in inputs. It also
supports multiple driving modalities (audio-driven, video-driven and combined
driving signals). Video samples are provided on the ttfamily project page
(https://omnihuman-lab.github.io)