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Adversarial images pose a severe security threat to multimodal large language models through prompt injection. Existing defenses largely lack a principled understanding of the underlying mechanisms and struggle to balance efficiency and…

Machine Learning · Computer Science 2026-05-26 Dongpeng Zhang , Ke Ma , Yangbangyan Jiang , Gaozheng Pei , Longtao Huang , Qianqian Xu , Qingming Huang

This paper investigates the feasibility of a proactive DeepFake defense framework, {\em FacePosion}, to prevent individuals from becoming victims of DeepFake videos by sabotaging face detection. The motivation stems from the reliance of…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Delong Zhu , Yuezun Li , Baoyuan Wu , Jiaran Zhou , Zhibo Wang , Siwei Lyu

Watermarking is a crucial tool for safeguarding copyrights and can serve as a more aesthetically pleasing alternative to QR codes. In recent years, watermarking methods based on deep learning have proved superior robustness against complex…

Multimedia · Computer Science 2023-08-24 Zhe Lei , Jie Zhang , Jingtao Li , Weiming Zhang , Nenghai Yu

Large Visual Language Models (LVLMs) now pose a serious yet overlooked privacy threat, as they can infer a social media user's geolocation directly from shared images, leading to unintended privacy leakage. While adversarial image…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Jiayi Zhu , Yihao Huang , Yue Cao , Xiaojun Jia , Qing Guo , Felix Juefei-Xu , Geguang Pu , Bin Wang

Watermarking combines an imperceptible change to an input image that will trigger a detector, to assert provenance and protect intellectual property. The literature has shown great interest in attacks on watermarking schemes: attackers are…

Cryptography and Security · Computer Science 2026-05-19 Maria Bulychev , Neil G. Marchant , Benjamin I. P. Rubinstein

Proactive watermarking offers a promising approach for deepfake tamper detection and localization in short-form videos. However, existing methods often decouple audio and visual evidence and assume that watermark signals remain reliable…

Computer Vision and Pattern Recognition · Computer Science 2026-04-28 Bokang Zeng , Zheng Gao , Xiaoyu Li , Xiaoyan Feng , Jiaojiao Jiang

With technological advances leading to an increase in mechanisms for image tampering, fraud detection methods must continue to be upgraded to match their sophistication. One problem with current methods is that they require prior knowledge…

Computer Vision and Pattern Recognition · Computer Science 2022-01-25 Robin Elizabeth Yancey

In the realm of multimedia data analysis, the extensive use of image datasets has escalated concerns over privacy protection within such data. Current research predominantly focuses on privacy protection either in data sharing or upon the…

Computer Vision and Pattern Recognition · Computer Science 2024-09-06 Huaxi Huang , Xin Yuan , Qiyu Liao , Dadong Wang , Tongliang Liu

Digital watermarking has been widely studied for the protection of intellectual property. Traditional watermarking schemes often design in a "wider" rule, which applies one general embedding mechanism to all images. But this will limit the…

Cryptography and Security · Computer Science 2022-04-26 Zhaoyang Jia , Han Fang , Zehua Ma , Weiming Zhang

Patch attacks, one of the most threatening forms of physical attack in adversarial examples, can lead networks to induce misclassification by modifying pixels arbitrarily in a continuous region. Certifiable patch defense can guarantee…

Computer Vision and Pattern Recognition · Computer Science 2022-03-17 Zhaoyu Chen , Bo Li , Jianghe Xu , Shuang Wu , Shouhong Ding , Wenqiang Zhang

Video watermarking embeds a message into a cover video in an imperceptible manner, which can be retrieved even if the video undergoes certain modifications or distortions. Traditional watermarking methods are often manually designed for…

Multimedia · Computer Science 2021-04-27 Xiyang Luo , Yinxiao Li , Huiwen Chang , Ce Liu , Peyman Milanfar , Feng Yang

Recent years have witnessed remarkable progress in developing Vision-Language Models (VLMs) capable of processing both textual and visual inputs. These models have demonstrated impressive performance, leading to their widespread adoption in…

Image and Video Processing · Electrical Eng. & Systems 2025-07-15 Hanene F. Z. Brachemi Meftah , Wassim Hamidouche , Sid Ahmed Fezza , Olivier Déforges

Detecting facial forgery images and videos is an increasingly important topic in multimedia forensics. As forgery images and videos are usually compressed into different formats such as JPEG and H264 when circulating on the Internet,…

Computer Vision and Pattern Recognition · Computer Science 2021-05-13 Shenhao Cao , Qin Zou , Xiuqing Mao , Zhongyuan Wang

The stunning progress in face manipulation methods has made it possible to synthesize realistic fake face images, which poses potential threats to our society. It is urgent to have face forensics techniques to distinguish those tampered…

Computer Vision and Pattern Recognition · Computer Science 2019-12-13 Jia Li , Tong Shen , Wei Zhang , Hui Ren , Dan Zeng , Tao Mei

Recent advances in biometric systems have significantly improved the detection and prevention of fraudulent activities. However, as detection methods improve, attack techniques become increasingly sophisticated. Attacks on face recognition…

Computer Vision and Pattern Recognition · Computer Science 2025-07-22 Lazaro Janier Gonzalez-Soler , Maciej Salwowski , Christoph Busch

Discrete image tokenizers encode visual inputs as sequences of tokens from a finite vocabulary and are gaining popularity in multimodal systems, including encoder-only, encoder-decoder, and decoder-only models. However, unlike CLIP…

Computer Vision and Pattern Recognition · Computer Science 2026-02-23 Rishika Bhagwatkar , Irina Rish , Nicolas Flammarion , Francesco Croce

With the rapid advancement of deepfake technology, malicious face manipulations pose a significant threat to personal privacy and social security. However, existing proactive forensics methods typically treat deepfake detection, tampering…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Junjiang Wu , Liejun Wang , Zhiqing Guo

We present a practical method for protecting data during the inference phase of deep learning based on bipartite topology threat modeling and an interactive adversarial deep network construction. We term this approach \emph{Privacy…

Cryptography and Security · Computer Science 2018-12-10 Jianfeng Chi , Emmanuel Owusu , Xuwang Yin , Tong Yu , William Chan , Patrick Tague , Yuan Tian

Video Watermarking serves as a new technology mainly used to provide security to the illegal distribution of digital video over the web. The purpose of any video watermarking scheme is to embed extra information into video in such a way…

Multimedia · Computer Science 2014-04-30 T. Srinivasa Rao , Rajasekhar R. Kurra

Watermarking serves as a widely adopted approach to safeguard media copyright. In parallel, the research focus has extended to watermark removal techniques, offering an adversarial means to enhance watermark robustness and foster…

Multimedia · Computer Science 2023-08-23 Dongjian Huo , Zehong Zhang , Hanjing Su , Guanbin Li , Chaowei Fang , Qingyao Wu
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