An Efficient Watermarking Method for Latent Diffusion Models via Low-Rank Adaptation

• URL: http://arxiv.org/abs/2410.20202v1
• Date: Sat, 26 Oct 2024 15:23:49 GMT
• Title: An Efficient Watermarking Method for Latent Diffusion Models via Low-Rank Adaptation
• Authors: Dongdong Lin, Yue Li, Benedetta Tondi, Bin Li, Mauro Barni,
• Abstract summary: We propose an efficient watermarking method for latent diffusion models (LDMs) based on Low-Rank Adaptation (LoRA) We show that the proposed method ensures fast watermark embedding and maintains a very low bit error rate of the watermark, a high-quality of the generated image, and a zero false negative rate (FNR) for verification.
• Score: 21.058231817498115
• License:
• Abstract: The rapid proliferation of deep neural networks (DNNs) is driving a surge in model watermarking technologies, as the trained deep models themselves serve as intellectual properties. The core of existing model watermarking techniques involves modifying or tuning the models' weights. However, with the emergence of increasingly complex models, ensuring the efficiency of watermarking process is essential to manage the growing computational demands. Prioritizing efficiency not only optimizes resource utilization, making the watermarking process more applicable, but also minimizes potential impacts on model performance. In this letter, we propose an efficient watermarking method for latent diffusion models (LDMs) which is based on Low-Rank Adaptation (LoRA). We specifically choose to add trainable low-rank matrices to the existing weight matrices of the models to embed watermark, while keeping the original weights frozen. Moreover, we also propose a dynamic loss weight tuning algorithm to balance the generative task with the watermark embedding task, ensuring that the model can be watermarked with a limited impact on the quality of the generated images. Experimental results show that the proposed method ensures fast watermark embedding and maintains a very low bit error rate of the watermark, a high-quality of the generated image, and a zero false negative rate (FNR) for verification.

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