Boost Your Human Image Generation Model via Direct Preference Optimization

Figure 1. Top: HG-DPO generates high-quality human images that encompass a wide range of actions, appearances, group sizes, and backgrounds. Bottom left: This is because HG-DPO improves the base model to generate images with more realistic anatomical features and poses, while also better aligning with the prompt (red text in the prompt). Bottom right: The benefits of HG-DPO transfer to personalized text-to-image tasks without additional training, generating high-quality images with the identity of concept image.