UniHuman: A Unified Model For Editing Human Images in the Wild
Authors: Nannan Li, Qing Liu, Krishna Kumar Singh, Yilin Wang, Jianming Zhang, Bryan A. Plummer, Zhe Lin

Human image editing includes tasks like changing a person's pose their clothing or editing the image according to a text prompt. However prior work often tackles these tasks separately overlooking the benefit of mutual reinforcement from learning them jointly. In this paper we propose UniHuman a unified model that addresses multiple facets of human image editing in real-world settings. To enhance the model's generation quality and generalization capacity we leverage guidance from human visual encoders and introduce a lightweight pose-warping module that can exploit different pose representations accommodating unseen textures and patterns. Furthermore to bridge the disparity between existing human editing benchmarks with real-world data we curated 400K high-quality human image-text pairs for training and collected 2K human images for out-of-domain testing both encompassing diverse clothing styles backgrounds and age groups. Experiments on both in-domain and out-of-domain test sets demonstrate that UniHuman outperforms task-specific models by a significant margin. In user studies UniHuman is preferred by the users in an average of 77% of cases. Our project is available at https://github.com/NannanLi999/UniHuman.