Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"Deepfake"”.
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Towards Accurate and Fair Deepfake Detection
… thesis, we tackle two problems in the field of deepfake detection. First, we present a novel approach for the detection of deepfake videos using a pair of vision transformers pre-trained by a self-supervised masked autoencoding setup. Our method consists of two distinct components, one of which …
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Understanding the Phenomenon of Deepfake Audio: Challenges and Solutions [Comprendere il fenomeno dell'audio deepfake: sfide e soluzioni]
… analizza le crescenti sfide poste dall'audio deepfake, concentrandosi sul rilevamento e l'attribuzione delle voci sintetiche. Con la crescente accessibilità e sofisticazione delle tecnologie di sintesi vocale, il rilevamento dell'audio sintetico è diventato un compito cruciale nell'ambito …
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Surveying face liveness detection in the deepfake era
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Discovering Fingerprints for Deepfake Detection and Multimedia-Enhanced Forensic Investigations
… a powerful yet frightening new phenomenon called deepfake: synthetic multimedia data created and/or altered using generative models. A great discovery made by forensic researchers over the years concerns the possibility of extracting a unique fingerprint that can determine the devices and software …
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Development of Ensemble Strategies for Generalization in Deepfake Image Detection
… models has enabled the rapid proliferation of deepfake content, posing significant challenges in image-based biometric security and media authenticity. In this thesis, six diverse facial deepfake image datasets are assembled, and four modern detection models are evaluated in a cross-domain …
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NoiseLearner: An Unsupervised, Content-agnostic Approach to Detect Deepfake Images
… of hyper- realistic synthetic images or "deepfakes" at high resolutions, making them almost indistin- guishable from real images from cameras. While exciting, this technology introduces room for abuse. Deepfakes have already been misused to produce pornography, political propaganda, and …
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Cheated by deepfakes? deepfake detection ability, people’s reactions, and ethical implications
… questions: First, how well do people detect deepfakes, and what factors affect their ability to detect deepfakes? Second, what are their reactions when deepfakes are revealed ? Third, what do they see as the ethical implications of deepfakes, and how deepfakes could be used or abused? For …
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Socially (de)constructing deepfakes: understanding socio-technical interests and concerns in deepfake media
Deepfake technology has emerged as a novel form of manipulation for images and videos and has increased the prevalence and realism of false video information online. While there have been some positive uses of deepfakes in translation and entertainment, the technology is often defined by two …
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Deepfake Face Detection: An Ensemble Framework for Generalized Classification in Biometric Verification Systems
Generation methods for deepfake images have advanced rapidly, and deepfake face images pose a critical security for biometric verification systems. Applications that rely on face recognition to grant access to sensitive data need to maintain high accuracy across a wide variety of deepfake …
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Multimodal Foundation Models through the Lens of Security: Robust Deepfake Detection and Adversarial Resilience
… are often exploited to generate highly realistic deepfake images and are also vulnerable to adversarial attacks that degrade their performance. These threats contribute to the spread of misinformation and the manipulation of AI systems, raising serious concerns about their security and …
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Použitelnost Deepfakes v oblasti kybernetické bezpečnosti
Deepfake technológia je v poslednej dobe na vzostupe. Vzniká mnoho techník a nástrojov pre tvorbu deepfake médií a začínajú sa používať ako pre nezákonné tak aj pre prospešné činnosti. Nezákonné použitie vedie k výskumu techník pre detekciu deepfake médií a ich neustálemu zlepšovaniu, takisto ako k …
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Detecting Deepfakes with Human Help to Help Humans Detect Deepfakes
Fake or manipulated video media (“deepfakes”) pose a clear threat to the integrity of online spaces that rely on video, from social media, to news media, to video conferencing platforms. To the human eye, these computer-generated fake videos are increasingly indistinguishable from genuine videos …
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ML-CHIEFS: machine learning-based corneal-specular highlight imaging for enhancing facial recognition security
… techniques of fictitious human facial images, DeepFake, elevates spreading misinformation and creating deception for identity theft, which becomes critical security and privacy threat. In this dissertation, ML-CHIEFS: Machine Learning-based Corneal-specular Highlight Imaging for Enhancing …
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The challenges of deepfake technology on the decision-making processes within law enforcement : a study within the EU landscape
… study aims to scrutinize the challenges posed by deepfake technology in the decision-making processes of law enforcement, both locally and across Europe, categorizing them into three key areas: Knowledge and Awareness: Assessing law enforcement officers’ familiarity with deepfake technologies, …
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Apprentissage profond appliqué à la détection du deepfake et à l'imagerie médicale: détection de la covid-19 et de la rétinopathie diabétique
L’apprentissage profond est une technique d’intelligence artificielle récente et populaire, connue pour ses avancées significatives dans les domaines de la vision par ordinateur et de l’apprentissage automatique. Toutefois, de nouvelles techniques plus avancées apparaissent régulièrement, ce qui …
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REPURPOSING DEEPFAKES FOR SOCIAL GOOD: THEORY, EMPIRICAL EVIDENCE, AND AI SYSTEMS FOR BIAS MEASUREMENT AND MITIGATION
… challenges by systematically repurposing deepfakes, a controversial yet technologically promising artificial intelligence technology, for rigorous bias measurement and mitigation. The first essay conducts a comprehensive analysis of 826 academic papers to understand deepfake …
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The Science and Art of Human and Artificial Intelligence Collaboration
… across three distinct tasks and domains: deepfake detection, dermatology diagnosis, and Wordle. First, the experiments in deepfake detection examine the similarities and differences between human and machine vision in identifying visual manipulations of people’s faces in videos and …
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