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Watermarking is broadly utilized to protect ownership of shared data while preserving data utility. However, existing watermarking methods for tabular datasets fall short on the desired properties (detectability, non-intrusiveness, and…

密码学与安全 · 计算机科学 2024-06-24 Yihao Zheng , Haocheng Xia , Junyuan Pang , Jinfei Liu , Kui Ren , Lingyang Chu , Yang Cao , Li Xiong

Deepfake speech attribution remains challenging for existing solutions. Classifier-based solutions often fail to generalize to domain-shifted samples, and watermarking-based solutions are easily compromised by distortions like codec…

音频与语音处理 · 电气工程与系统科学 2025-10-16 Wanying Ge , Xin Wang , Junichi Yamagishi

Diffusion models have rapidly become a vital part of deep generative architectures, given today's increasing demands. Obtaining large, high-performance diffusion models demands significant resources, highlighting their importance as…

密码学与安全 · 计算机科学 2023-11-30 Sen Peng , Yufei Chen , Cong Wang , Xiaohua Jia

Deepfakes and manipulated media are becoming a prominent threat due to the recent advances in realistic image and video synthesis techniques. There have been several attempts at combating Deepfakes using machine learning classifiers.…

计算机视觉与模式识别 · 计算机科学 2022-04-06 Paarth Neekhara , Shehzeen Hussain , Xinqiao Zhang , Ke Huang , Julian McAuley , Farinaz Koushanfar

Foundation models, particularly Large Language Models (LLMs), have revolutionized text and video processing, yet time series data presents distinct challenges for such approaches due to domain-specific features such as missing values,…

机器学习 · 计算机科学 2025-02-12 Defu Cao , Wen Ye , Yizhou Zhang , Yan Liu

With the significant advances in deep generative models for image and video synthesis, Deepfakes and manipulated media have raised severe societal concerns. Conventional machine learning classifiers for deepfake detection often fail to cope…

计算机视觉与模式识别 · 计算机科学 2024-10-14 Aakash Varma Nadimpalli , Ajita Rattani

We present the first undetectable watermarking scheme for generative image models. Undetectability ensures that no efficient adversary can distinguish between watermarked and un-watermarked images, even after making many adaptive queries.…

密码学与安全 · 计算机科学 2025-04-23 Sam Gunn , Xuandong Zhao , Dawn Song

Computing the discrepancy between time series of variable sizes is notoriously challenging. While dynamic time warping (DTW) is popularly used for this purpose, it is not differentiable everywhere and is known to lead to bad local optima…

机器学习 · 计算机科学 2021-03-01 Mathieu Blondel , Arthur Mensch , Jean-Philippe Vert

Ethical concerns surrounding copyright protection and inappropriate content generation pose challenges for the practical implementation of diffusion models. One effective solution involves watermarking the generated images. However,…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Zijin Yang , Kai Zeng , Kejiang Chen , Han Fang , Weiming Zhang , Nenghai Yu

Existing approaches for watermarking AI-generated images often rely on post-hoc methods applied in pixel space, introducing computational overhead and potential visual artifacts. In this work, we explore latent space watermarking and…

The rapid development of video generative models has led to a surge in highly realistic synthetic videos, raising ethical concerns related to disinformation and copyright infringement. Recently, video watermarking has been proposed as a…

密码学与安全 · 计算机科学 2025-05-29 Zhengyuan Jiang , Moyang Guo , Kecen Li , Yuepeng Hu , Yupu Wang , Zhicong Huang , Cheng Hong , Neil Zhenqiang Gong

Transformer-based time series foundation models face a fundamental trade-off in choice of tokenization: point-wise embeddings preserve temporal fidelity but scale poorly with sequence length, whereas fixed-length patching improves…

Deepfake technology poses increasing risks such as privacy invasion and identity theft. To address these threats, we propose WaveGuard, a proactive watermarking framework that enhances robustness and imperceptibility via frequency-domain…

计算机视觉与模式识别 · 计算机科学 2026-04-02 Ziyuan He , Zhiqing Guo , Liejun Wang , Gaobo Yang , Yunfeng Diao , Dan Ma

Notwithstanding offering convenience and entertainment to society, Deepfake face swapping has caused critical privacy issues with the rapid development of deep generative models. Due to imperceptible artifacts in high-quality synthetic…

计算机视觉与模式识别 · 计算机科学 2025-11-05 Tianyi Wang , Mengxiao Huang , Harry Cheng , Bin Ma , Yinglong Wang

Robust invisible watermarking aims to embed hidden messages into images such that they survive various manipulations while remaining imperceptible. However, powerful diffusion-based image generation and editing models now enable realistic…

密码学与安全 · 计算机科学 2025-11-11 Wenkai Fu , Finn Carter , Yue Wang , Emily Davis , Bo Zhang

Due to the wide distribution and usage of digital media, an important issue is protection of the digital content. There is a number of algorithms and techniques developed for the digital watermarking.In this paper, the invisible image…

多媒体 · 计算机科学 2015-02-09 Jelena Music , Ivan Knezevic , Edis Franca

Full Waveform Inversion (FWI) is a powerful technique for estimating high-resolution subsurface velocity models by minimizing the discrepancy between modeled and observed seismic data. However, the oscillatory nature of seismic waveforms…

Watermarking techniques are vital for protecting intellectual property and preventing fraudulent use of media. Most previous watermarking schemes designed for diffusion models embed a secret key in the initial noise. The resulting pattern…

计算机视觉与模式识别 · 计算机科学 2025-04-30 Anubhav Jain , Yuya Kobayashi , Naoki Murata , Yuhta Takida , Takashi Shibuya , Yuki Mitsufuji , Niv Cohen , Nasir Memon , Julian Togelius

Diffusion models have been recently used for anomaly detection (AD) in images. In this paper we investigate whether they can also be leveraged for AD on multivariate time series (MTS). We test two diffusion-based models and compare them to…

机器学习 · 计算机科学 2023-11-03 Ioana Pintilie , Andrei Manolache , Florin Brad

Watermarking images is critical for tracking image provenance and proving ownership. With the advent of generative models, such as stable diffusion, that can create fake but realistic images, watermarking has become particularly important…

计算机视觉与模式识别 · 计算机科学 2024-10-29 Lijun Zhang , Xiao Liu , Antoni Viros Martin , Cindy Xiong Bearfield , Yuriy Brun , Hui Guan