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Main Authors: Jia, Qifei, Liu, Yu, Chai, Yajie, Yao, Xintong, Lu, Qiming, Zhang, Yasen, Shi, Runyu, Huang, Ying, Zhang, Guoquan
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2509.12883
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author Jia, Qifei
Liu, Yu
Chai, Yajie
Yao, Xintong
Lu, Qiming
Zhang, Yasen
Shi, Runyu
Huang, Ying
Zhang, Guoquan
author_facet Jia, Qifei
Liu, Yu
Chai, Yajie
Yao, Xintong
Lu, Qiming
Zhang, Yasen
Shi, Runyu
Huang, Ying
Zhang, Guoquan
contents Instruction-based image editing has garnered significant attention due to its direct interaction with users. However, real-world user instructions are immensely diverse, and existing methods often fail to generalize effectively to instructions outside their training domain, limiting their practical application. To address this, we propose Lego-Edit, which leverages the generalization capability of Multi-modal Large Language Model (MLLM) to organize a suite of model-level editing tools to tackle this challenge. Lego-Edit incorporates two key designs: (1) a model-level toolkit comprising diverse models efficiently trained on limited data and several image manipulation functions, enabling fine-grained composition of editing actions by the MLLM; and (2) a three-stage progressive reinforcement learning approach that uses feedback on unannotated, open-domain instructions to train the MLLM, equipping it with generalized reasoning capabilities for handling real-world instructions. Experiments demonstrate that Lego-Edit achieves state-of-the-art performance on GEdit-Bench and ImgBench. It exhibits robust reasoning capabilities for open-domain instructions and can utilize newly introduced editing tools without additional fine-tuning. Code is available: https://github.com/xiaomi-research/lego-edit.
format Preprint
id arxiv_https___arxiv_org_abs_2509_12883
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Lego-Edit: A General Image Editing Framework with Model-Level Bricks and MLLM Builder
Jia, Qifei
Liu, Yu
Chai, Yajie
Yao, Xintong
Lu, Qiming
Zhang, Yasen
Shi, Runyu
Huang, Ying
Zhang, Guoquan
Computer Vision and Pattern Recognition
Instruction-based image editing has garnered significant attention due to its direct interaction with users. However, real-world user instructions are immensely diverse, and existing methods often fail to generalize effectively to instructions outside their training domain, limiting their practical application. To address this, we propose Lego-Edit, which leverages the generalization capability of Multi-modal Large Language Model (MLLM) to organize a suite of model-level editing tools to tackle this challenge. Lego-Edit incorporates two key designs: (1) a model-level toolkit comprising diverse models efficiently trained on limited data and several image manipulation functions, enabling fine-grained composition of editing actions by the MLLM; and (2) a three-stage progressive reinforcement learning approach that uses feedback on unannotated, open-domain instructions to train the MLLM, equipping it with generalized reasoning capabilities for handling real-world instructions. Experiments demonstrate that Lego-Edit achieves state-of-the-art performance on GEdit-Bench and ImgBench. It exhibits robust reasoning capabilities for open-domain instructions and can utilize newly introduced editing tools without additional fine-tuning. Code is available: https://github.com/xiaomi-research/lego-edit.
title Lego-Edit: A General Image Editing Framework with Model-Level Bricks and MLLM Builder
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2509.12883