Mirror in the Model: Ad Banner Image Generation via Reflective Multi-LLM and Multi-modal Agents

• URL: http://arxiv.org/abs/2507.03326v1
• Date: Fri, 04 Jul 2025 06:19:16 GMT
• Title: Mirror in the Model: Ad Banner Image Generation via Reflective Multi-LLM and Multi-modal Agents
• Authors: Zhao Wang, Bowen Chen, Yotaro Shimose, Sota Moriyama, Heng Wang, Shingo Takamatsu,
• Abstract summary: We introduce Mirror In-the-Model (MIMO), an agentic refinement framework for automatic ad banner generation.<n>MIMO combines a hierarchical multi-modal agent system (MIMO-Core) with a coordination loop (MIMO-Loop) that explores multiple stylistic directions.<n>MIMO significantly outperforms existing diffusion and LLM-based baselines in real-world banner design scenarios.
• Score: 8.111140263252565
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Recent generative models such as GPT-4o have shown strong capabilities in producing high-quality images with accurate text rendering. However, commercial design tasks like advertising banners demand more than visual fidelity -- they require structured layouts, precise typography, consistent branding, and more. In this paper, we introduce MIMO (Mirror In-the-Model), an agentic refinement framework for automatic ad banner generation. MIMO combines a hierarchical multi-modal agent system (MIMO-Core) with a coordination loop (MIMO-Loop) that explores multiple stylistic directions and iteratively improves design quality. Requiring only a simple natural language based prompt and logo image as input, MIMO automatically detects and corrects multiple types of errors during generation. Experiments show that MIMO significantly outperforms existing diffusion and LLM-based baselines in real-world banner design scenarios.

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