TheaterGen: Character Management with LLM for Consistent Multi-turn Image Generation

• URL: http://arxiv.org/abs/2404.18919v1
• Date: Mon, 29 Apr 2024 17:58:14 GMT
• Title: TheaterGen: Character Management with LLM for Consistent Multi-turn Image Generation
• Authors: Junhao Cheng, Baiqiao Yin, Kaixin Cai, Minbin Huang, Hanhui Li, Yuxin He, Xi Lu, Yue Li, Yifei Li, Yuhao Cheng, Yiqiang Yan, Xiaodan Liang,
• Abstract summary: TheaterGen is a training-free framework that integrates large language models (LLMs) and text-to-image (T2I) models. Within this framework, LLMs, acting as "Screenwriter", engage in multi-turn interaction, generating and managing a standardized prompt book. With the effective management of prompt books and character images, TheaterGen significantly improves semantic and contextual consistency in synthesized images.
• Score: 44.740794326596664
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent advances in diffusion models can generate high-quality and stunning images from text. However, multi-turn image generation, which is of high demand in real-world scenarios, still faces challenges in maintaining semantic consistency between images and texts, as well as contextual consistency of the same subject across multiple interactive turns. To address this issue, we introduce TheaterGen, a training-free framework that integrates large language models (LLMs) and text-to-image (T2I) models to provide the capability of multi-turn image generation. Within this framework, LLMs, acting as a "Screenwriter", engage in multi-turn interaction, generating and managing a standardized prompt book that encompasses prompts and layout designs for each character in the target image. Based on these, Theatergen generate a list of character images and extract guidance information, akin to the "Rehearsal". Subsequently, through incorporating the prompt book and guidance information into the reverse denoising process of T2I diffusion models, Theatergen generate the final image, as conducting the "Final Performance". With the effective management of prompt books and character images, TheaterGen significantly improves semantic and contextual consistency in synthesized images. Furthermore, we introduce a dedicated benchmark, CMIGBench (Consistent Multi-turn Image Generation Benchmark) with 8000 multi-turn instructions. Different from previous multi-turn benchmarks, CMIGBench does not define characters in advance. Both the tasks of story generation and multi-turn editing are included on CMIGBench for comprehensive evaluation. Extensive experimental results show that TheaterGen outperforms state-of-the-art methods significantly. It raises the performance bar of the cutting-edge Mini DALLE 3 model by 21% in average character-character similarity and 19% in average text-image similarity.

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