RePrompt: Reasoning-Augmented Reprompting for Text-to-Image Generation via Reinforcement Learning

• URL: http://arxiv.org/abs/2505.17540v1
• Date: Fri, 23 May 2025 06:44:26 GMT
• Title: RePrompt: Reasoning-Augmented Reprompting for Text-to-Image Generation via Reinforcement Learning
• Authors: Mingrui Wu, Lu Wang, Pu Zhao, Fangkai Yang, Jianjin Zhang, Jianfeng Liu, Yuefeng Zhan, Weihao Han, Hao Sun, Jiayi Ji, Xiaoshuai Sun, Qingwei Lin, Weiwei Deng, Dongmei Zhang, Feng Sun, Qi Zhang, Rongrong Ji,
• Abstract summary: RePrompt is a novel reprompting framework that introduces explicit reasoning into the prompt enhancement process via reinforcement learning.<n>Our approach enables end-to-end training without human-annotated data.
• Score: 88.14234949860105
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Despite recent progress in text-to-image (T2I) generation, existing models often struggle to faithfully capture user intentions from short and under-specified prompts. While prior work has attempted to enhance prompts using large language models (LLMs), these methods frequently generate stylistic or unrealistic content due to insufficient grounding in visual semantics and real-world composition. Inspired by recent advances in reasoning for language model, we propose RePrompt, a novel reprompting framework that introduces explicit reasoning into the prompt enhancement process via reinforcement learning. Instead of relying on handcrafted rules or stylistic rewrites, our method trains a language model to generate structured, self-reflective prompts by optimizing for image-level outcomes. The tailored reward models assesse the generated images in terms of human preference, semantic alignment, and visual composition, providing indirect supervision to refine prompt generation. Our approach enables end-to-end training without human-annotated data. Experiments on GenEval and T2I-Compbench show that RePrompt significantly boosts spatial layout fidelity and compositional generalization across diverse T2I backbones, establishing new state-of-the-art results.

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