ImAgent: A Unified Multimodal Agent Framework for Test-Time Scalable Image Generation

Fuente: arXiv
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Auteurs principaux: Wang, Kaishen, Chen, Ruibo, Zheng, Tong, Huang, Heng
Format: Preprint
Publié: 2025
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author Wang, Kaishen
Chen, Ruibo
Zheng, Tong
Huang, Heng
author_facet Wang, Kaishen
Chen, Ruibo
Zheng, Tong
Huang, Heng
contents Recent text-to-image (T2I) models have made remarkable progress in generating visually realistic and semantically coherent images. However, they still suffer from randomness and inconsistency with the given prompts, particularly when textual descriptions are vague or underspecified. Existing approaches, such as prompt rewriting, best-of-N sampling, and self-refinement, can mitigate these issues but usually require additional modules and operate independently, hindering test-time scaling efficiency and increasing computational overhead. In this paper, we introduce ImAgent, a training-free unified multimodal agent that integrates reasoning, generation, and self-evaluation within a single framework for efficient test-time scaling. Guided by a policy controller, multiple generation actions dynamically interact and self-organize to enhance image fidelity and semantic alignment without relying on external models. Extensive experiments on image generation and editing tasks demonstrate that ImAgent consistently improves over the backbone and even surpasses other strong baselines where the backbone model fails, highlighting the potential of unified multimodal agents for adaptive and efficient image generation under test-time scaling.
format Preprint
id arxiv_https___arxiv_org_abs_2511_11483
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle ImAgent: A Unified Multimodal Agent Framework for Test-Time Scalable Image Generation
Wang, Kaishen
Chen, Ruibo
Zheng, Tong
Huang, Heng
Computer Vision and Pattern Recognition
Artificial Intelligence
Recent text-to-image (T2I) models have made remarkable progress in generating visually realistic and semantically coherent images. However, they still suffer from randomness and inconsistency with the given prompts, particularly when textual descriptions are vague or underspecified. Existing approaches, such as prompt rewriting, best-of-N sampling, and self-refinement, can mitigate these issues but usually require additional modules and operate independently, hindering test-time scaling efficiency and increasing computational overhead. In this paper, we introduce ImAgent, a training-free unified multimodal agent that integrates reasoning, generation, and self-evaluation within a single framework for efficient test-time scaling. Guided by a policy controller, multiple generation actions dynamically interact and self-organize to enhance image fidelity and semantic alignment without relying on external models. Extensive experiments on image generation and editing tasks demonstrate that ImAgent consistently improves over the backbone and even surpasses other strong baselines where the backbone model fails, highlighting the potential of unified multimodal agents for adaptive and efficient image generation under test-time scaling.
title ImAgent: A Unified Multimodal Agent Framework for Test-Time Scalable Image Generation
topic Computer Vision and Pattern Recognition
Artificial Intelligence
url https://arxiv.org/abs/2511.11483