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Deepfakes are synthetically generated images, videos or audios, which fraudsters use to manipulate legitimate information. Current deepfake detection systems struggle against unseen data. To address this, we employ three different deep…

Computer Vision and Pattern Recognition · Computer Science 2021-02-12 Sohail Ahmed Khan , Alessandro Artusi , Hang Dai

Most current computer vision datasets are composed of disconnected sets, such as images from different classes. We prove that distributions of this type of data cannot be represented with a continuous generative network without error. They…

Machine Learning · Computer Science 2020-06-26 Lorenzo Luzi , Randall Balestriero , Richard G. Baraniuk

We introduce the concept of deceptive diffusion -- training a generative AI model to produce adversarial images. Whereas a traditional adversarial attack algorithm aims to perturb an existing image to induce a misclassificaton, the…

Machine Learning · Computer Science 2024-07-01 Lucas Beerens , Catherine F. Higham , Desmond J. Higham

Recent advances in AI technology have made the forgery of digital images and videos easier, and it has become significantly more difficult to identify such forgeries. These forgeries, if disseminated with malicious intent, can negatively…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Chia-Mu Yu , Ching-Tang Chang , Yen-Wu Ti

Recently, deep-networks-based hashing (deep hashing) has become a leading approach for large-scale image retrieval. It aims to learn a compact bitwise representation for images via deep networks, so that similar images are mapped to nearby…

Computer Vision and Pattern Recognition · Computer Science 2018-09-05 Libing Geng , Yan Pan , Jikai Chen , Hanjiang Lai

The Generative Adversarial Network (GAN) has achieved great success in generating realistic (real-valued) synthetic data. However, convergence issues and difficulties dealing with discrete data hinder the applicability of GAN to text. We…

Machine Learning · Statistics 2017-11-21 Yizhe Zhang , Zhe Gan , Kai Fan , Zhi Chen , Ricardo Henao , Dinghan Shen , Lawrence Carin

False information spread via the internet and social media influences public opinion and user activity, while generative models enable fake content to be generated faster and more cheaply than had previously been possible. In the not so…

Computation and Language · Computer Science 2021-04-27 Antonis Maronikolakis , Hinrich Schutze , Mark Stevenson

The classification of forged videos has been a challenge for the past few years. Deepfake classifiers can now reliably predict whether or not video frames have been tampered with. However, their performance is tied to both the dataset used…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Matthieu Delmas , Renaud Seguier

In medical imaging, image synthesis is the estimation process of one image (sequence, modality) from another image (sequence, modality). Since images with different modalities provide diverse biomarkers and capture various features,…

Image and Video Processing · Electrical Eng. & Systems 2023-05-26 Firoozeh Shomal Zadeh , Sevda Molani , Maysam Orouskhani , Marziyeh Rezaei , Mehrzad Shafiei , Hossein Abbasi

The advent of deep learning has brought a significant improvement in the quality of generated media. However, with the increased level of photorealism, synthetic media are becoming hardly distinguishable from real ones, raising serious…

Computer Vision and Pattern Recognition · Computer Science 2021-04-07 Diego Gragnaniello , Davide Cozzolino , Francesco Marra , Giovanni Poggi , Luisa Verdoliva

The rapid advances in deep generative models over the past years have led to highly {realistic media, known as deepfakes,} that are commonly indistinguishable from real to human eyes. These advances make assessing the authenticity of visual…

Computer Vision and Pattern Recognition · Computer Science 2021-06-01 Yang He , Ning Yu , Margret Keuper , Mario Fritz

Recent advancements in deep learning generative models have raised concerns as they can create highly convincing counterfeit images and videos. This poses a threat to people's integrity and can lead to social instability. To address this…

Computer Vision and Pattern Recognition · Computer Science 2024-02-19 Leandro A. Passos , Danilo Jodas , Kelton A. P. da Costa , Luis A. Souza Júnior , Douglas Rodrigues , Javier Del Ser , David Camacho , João Paulo Papa

Generative Adversarial Networks (GANs) have been successfully used to synthesize realistically looking images of faces, scenery and even medical images. Unfortunately, they usually require large training datasets, which are often scarce in…

Computer Vision and Pattern Recognition · Computer Science 2018-04-13 Christoph Baur , Shadi Albarqouni , Nassir Navab

Generative adversarial networks (GANs) implicitly learn the probability distribution of a dataset and can draw samples from the distribution. This paper presents, Tabular GAN (TGAN), a generative adversarial network which can generate…

Machine Learning · Computer Science 2018-11-29 Lei Xu , Kalyan Veeramachaneni

Currently, the rapid development of computer vision and deep learning has enabled the creation or manipulation of high-fidelity facial images and videos via deep generative approaches. This technology, also known as deepfake, has achieved…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Lixia Ma , Puning Yang , Yuting Xu , Ziming Yang , Peipei Li , Huaibo Huang

Deepfake is content or material that is synthetically generated or manipulated using artificial intelligence (AI) methods, to be passed off as real and can include audio, video, image, and text synthesis. This survey has been conducted with…

Sound · Computer Science 2021-11-30 Zahra Khanjani , Gabrielle Watson , Vandana P. Janeja

Numerous emerging deep-learning techniques have had a substantial impact on computer graphics. Among the most promising breakthroughs are the rise of Neural Radiance Fields (NeRFs) and Gaussian Splatting (GS). NeRFs encode the object's…

Computer Vision and Pattern Recognition · Computer Science 2024-12-03 Georgii Stanishevskii , Jakub Steczkiewicz , Tomasz Szczepanik , Sławomir Tadeja , Jacek Tabor , Przemysław Spurek

In recent years, generative adversarial networks (GANs) and its variants have achieved unprecedented success in image synthesis. They are widely adopted in synthesizing facial images which brings potential security concerns to humans as the…

Cryptography and Security · Computer Science 2020-07-17 Run Wang , Felix Juefei-Xu , Lei Ma , Xiaofei Xie , Yihao Huang , Jian Wang , Yang Liu

Generative Adversarial Networks (GANs) have proved as a powerful framework for denoising applications in medical imaging. However, GAN-based denoising algorithms still suffer from limitations in capturing complex relationships within the…

Image and Video Processing · Electrical Eng. & Systems 2026-02-16 Francesco Di Feola , Lorenzo Tronchin , Valerio Guarrasi , Paolo Soda

Modeling lies at the core of both the financial and the insurance industry for a wide variety of tasks. The rise and development of machine learning and deep learning models have created many opportunities to improve our modeling toolbox.…

Machine Learning · Computer Science 2023-01-04 Yves-Cédric Bauwelinckx , Jan Dhaene , Tim Verdonck , Milan van den Heuvel