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Authentication of smartphone users is important because a lot of sensitive data is stored in the smartphone and the smartphone is also used to access various cloud data and services. However, smartphones are easily stolen or co-opted by an…

密码学与安全 · 计算机科学 2017-09-01 Wei-Han Lee , Ruby B. Lee

Manipulating video content is easier than ever. Due to the misuse potential of manipulated content, multiple detection techniques that analyze the pixel data from the videos have been proposed. However, clever manipulators should also…

机器学习 · 计算机科学 2019-06-21 David Güera , Sriram Baireddy , Paolo Bestagini , Stefano Tubaro , Edward J. Delp

We provide background on emerging challenges and future directions with media integrity and authentication methods, focusing on distinguishing AI-generated media from authentic content captured by cameras and microphones. We evaluate…

The crime of illegally filming and distributing images or videos worldwide is increasing day by day. With the increasing penetration rate of smartphones, there has been a rise in crimes involving secretly taking pictures of people's bodies…

多媒体 · 计算机科学 2023-04-11 Yu-Min Jeon , Won-Mu Heo , Jong-Min Kim , Kyounggon Kim

Due to the widespread use of smartphones with high-quality digital cameras and easy access to a wide range of software apps for recording, editing, and sharing videos and images, as well as the deep learning AI platforms, a new phenomenon…

计算机视觉与模式识别 · 计算机科学 2023-09-08 Nikhil Sontakke , Sejal Utekar , Shivansh Rastogi , Shriraj Sonawane

The impact of citizen journalism raises important video integrity and credibility issues. In this article, we introduce Vamos, the first user transparent video "liveness" verification solution based on video motion, that accommodates the…

密码学与安全 · 计算机科学 2017-04-10 Mahmudur Rahman , Mozhgan Azimpourkivi , Umut Topkara , Bogdan Carbunar

Perceptual video quality assessment plays a vital role in the field of video processing due to the existence of quality degradations introduced in various stages of video signal acquisition, compression, transmission and display. With the…

多媒体 · 计算机科学 2024-02-07 Xiongkuo Min , Huiyu Duan , Wei Sun , Yucheng Zhu , Guangtao Zhai

The Digital Forgeries though not visibly identifiable to human perception it may alter or meddle with underlying natural statistics of digital content. Tampering involves fiddling with video content in order to cause damage or make…

多媒体 · 计算机科学 2015-03-04 Sowmya K. N. , H. R. Chennamma

With the immense number of videos being uploaded to the video sharing sites, issue of copyright infringement arises with uploading of illicit copies or transformed versions of original video. Thus safeguarding copyright of digital media has…

计算机视觉与模式识别 · 计算机科学 2016-10-31 Sanket Shinde , Girija Chiddarwar

With the rapid development of generation model, AI-based face manipulation technology, which called DeepFakes, has become more and more realistic. This means of face forgery can attack any target, which poses a new threat to personal…

计算机视觉与模式识别 · 计算机科学 2021-11-16 Yuyang Sun , Zhiyong Zhang , Changzhen Qiu , Liang Wang , Zekai Wang

Screen recordings of mobile applications are easy to obtain and capture a wealth of information pertinent to software developers (e.g., bugs or feature requests), making them a popular mechanism for crowdsourced app feedback. Thus, these…

Recently, two technologies: video analysis and mobile device sensors have considerable impacted Physics teaching. However, in general, these techniques are usually used independently. Here, we focus on a less-explored feature: the…

物理教育 · 物理学 2020-06-08 Martin Monteiro , Cecilia Cabeza , Cecilia Stari , Arturo C. Marti

The reliability of secure graphic verification, a key anti-counterfeiting tool, is undermined by poor image acquisition on smartphones. Uncontrolled user captures of these high-entropy patterns cause high false rejection rates, creating a…

计算机视觉与模式识别 · 计算机科学 2025-09-25 Cas Steigstra , Sergey Milyaev , Shaodi You

With information consumption via online video streaming becoming increasingly popular, misinformation video poses a new threat to the health of the online information ecosystem. Though previous studies have made much progress in detecting…

计算机视觉与模式识别 · 计算机科学 2023-08-08 Yuyan Bu , Qiang Sheng , Juan Cao , Peng Qi , Danding Wang , Jintao Li

The video footage produced by the surveillance cameras is an important evidence to support criminal investigations. Video evidence can be sourced from public (trusted) as well as private (untrusted) surveillance systems. This raises the…

密码学与安全 · 计算机科学 2020-05-07 Regio A. Michelin , Nadeem Ahmed , Salil S. Kanhere , Aruna Seneviratne , Sanjay Jha

During the investigation of criminal activity when evidence is available, the issue at hand is determining the credibility of the video and ascertaining that the video is real. Today, one way to authenticate the footage is to identify the…

计算机视觉与模式识别 · 计算机科学 2022-10-18 Akash Nagaraj , Mukund Sood , Vivek Kapoor , Yash Mathur , Bishesh Sinha

The identification of source cameras from videos, though it is a highly relevant forensic analysis topic, has been studied much less than its counterpart that uses images. In this work we propose a method to identify the source camera of a…

计算机视觉与模式识别 · 计算机科学 2020-12-14 Derrick Timmerman , Swaroop Bennabhaktula , Enrique Alegre , George Azzopardi

Recent studies have advocated the detection of fake videos as a one-class detection task, predicated on the hypothesis that the consistency between audio and visual modalities of genuine data is more significant than that of fake data. This…

声音 · 计算机科学 2024-06-13 Xiaolou Li , Zehua Liu , Chen Chen , Lantian Li , Li Guo , Dong Wang

The widespread and rapid adoption of AI-generated content, created by models such as Generative Adversarial Networks (GANs) and Diffusion Models, has revolutionized the digital media landscape by allowing efficient and creative content…

计算机视觉与模式识别 · 计算机科学 2025-07-08 Aadi Srivastava , Vignesh Natarajkumar , Utkarsh Bheemanaboyna , Devisree Akashapu , Nagraj Gaonkar , Archit Joshi

The widespread use of smartphones gives rise to new security and privacy concerns. Smartphone thefts account for the largest percentage of thefts in recent crime statistics. Using a victim's smartphone, the attacker can launch impersonation…

密码学与安全 · 计算机科学 2017-03-10 Wei-Han Lee , Ruby Lee