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Main Authors: Wang, Chunpeng, Qu, Binyan, Wang, Xiaoyu, Xia, Zhiqiu, Zhang, Shanshan, Liu, Yunan, Li, Qi
Format: Preprint
Published: 2026
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Online Access:https://arxiv.org/abs/2604.22220
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author Wang, Chunpeng
Qu, Binyan
Wang, Xiaoyu
Xia, Zhiqiu
Zhang, Shanshan
Liu, Yunan
Li, Qi
author_facet Wang, Chunpeng
Qu, Binyan
Wang, Xiaoyu
Xia, Zhiqiu
Zhang, Shanshan
Liu, Yunan
Li, Qi
contents Digital image watermarking has advanced rapidly for copyright protection of generative AI, yet the comparatively limited progress in watermark attack techniques has broken the attack-defense balance and hindered further advances in the field. In this paper, we propose FMDiffWA, a frequency-domain modulated diffusion framework for watermark attacks. Specifically, we introduce a frequency-domain watermark modulation (FWM) module and incorporate it into the sampling stages both the forward and reverse diffusion processes. This mechanism enables selective modulation of watermark-related frequency components, thereby allowing FMDiffWA to effectively neutralize the invisible watermark signals while preserving the perceptual quality of the attacked watermarked images. To achieve a better trade-off between attack efficacy and visual fidelity, we reformulate the training strategy of conventional diffusion models by augmenting the canonical noise estimation objective with an auxiliary refinement constraint. Comprehensive experiments demonstrate that FMDiffWA achieves superior visual fidelity compared to existing watermark attacks, while exhibiting strong generalization across diverse watermarking schemes.
format Preprint
id arxiv_https___arxiv_org_abs_2604_22220
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Breaking Watermarks in the Frequency Domain: A Modulated Diffusion Attack Framework
Wang, Chunpeng
Qu, Binyan
Wang, Xiaoyu
Xia, Zhiqiu
Zhang, Shanshan
Liu, Yunan
Li, Qi
Computer Vision and Pattern Recognition
Digital image watermarking has advanced rapidly for copyright protection of generative AI, yet the comparatively limited progress in watermark attack techniques has broken the attack-defense balance and hindered further advances in the field. In this paper, we propose FMDiffWA, a frequency-domain modulated diffusion framework for watermark attacks. Specifically, we introduce a frequency-domain watermark modulation (FWM) module and incorporate it into the sampling stages both the forward and reverse diffusion processes. This mechanism enables selective modulation of watermark-related frequency components, thereby allowing FMDiffWA to effectively neutralize the invisible watermark signals while preserving the perceptual quality of the attacked watermarked images. To achieve a better trade-off between attack efficacy and visual fidelity, we reformulate the training strategy of conventional diffusion models by augmenting the canonical noise estimation objective with an auxiliary refinement constraint. Comprehensive experiments demonstrate that FMDiffWA achieves superior visual fidelity compared to existing watermark attacks, while exhibiting strong generalization across diverse watermarking schemes.
title Breaking Watermarks in the Frequency Domain: A Modulated Diffusion Attack Framework
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2604.22220