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Deep neural networks are vulnerable to adversarial examples, which can mislead classifiers by adding imperceptible perturbations. An intriguing property of adversarial examples is their good transferability, making black-box attacks…

Computer Vision and Pattern Recognition · Computer Science 2019-04-08 Yinpeng Dong , Tianyu Pang , Hang Su , Jun Zhu

Images synthesized by powerful generative adversarial network (GAN) based methods have drawn moral and privacy concerns. Although image forensic models have reached great performance in detecting fake images from real ones, these models can…

Computer Vision and Pattern Recognition · Computer Science 2021-05-20 Dongze Li , Wei Wang , Hongxing Fan , Jing Dong

Diffusion Models (DMs) have shown remarkable capabilities in various image-generation tasks. However, there are growing concerns that DMs could be used to imitate unauthorized creations and thus raise copyright issues. To address this…

Computer Vision and Pattern Recognition · Computer Science 2024-04-22 Peifei Zhu , Tsubasa Takahashi , Hirokatsu Kataoka

Adversarial attacks meticulously generate minuscule, imperceptible perturbations to images to deceive neural networks. Counteracting these, adversarial purification methods seek to transform adversarial input samples into clean output…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Sitong Liu , Zhichao Lian , Shuangquan Zhang , Liang Xiao

Evading adversarial example detection defenses requires finding adversarial examples that must simultaneously (a) be misclassified by the model and (b) be detected as non-adversarial. We find that existing attacks that attempt to satisfy…

Machine Learning · Computer Science 2021-06-30 Oliver Bryniarski , Nabeel Hingun , Pedro Pachuca , Vincent Wang , Nicholas Carlini

It has been observed that deep learning architectures tend to make erroneous decisions with high reliability for particularly designed adversarial instances. In this work, we show that the perturbation analysis of these architectures…

Machine Learning · Computer Science 2018-12-05 Emilio Rafael Balda , Arash Behboodi , Rudolf Mathar

Adversarial attacks for image classification are small perturbations to images that are designed to cause misclassification by a model. Adversarial attacks formally correspond to an optimization problem: find a minimum norm image…

Machine Learning · Computer Science 2019-03-26 Chris Finlay , Aram-Alexandre Pooladian , Adam M. Oberman

Thanks to recent advances in deep neural networks (DNNs), face recognition systems have become highly accurate in classifying a large number of face images. However, recent studies have found that DNNs could be vulnerable to adversarial…

Machine Learning · Computer Science 2020-01-29 Kazuya Kakizaki , Kosuke Yoshida

Generating adversarial examples for natural language is hard, as natural language consists of discrete symbols, and examples are often of variable lengths. In this paper, we propose a geometry-inspired attack for generating natural language…

Computation and Language · Computer Science 2020-10-06 Zhao Meng , Roger Wattenhofer

Deep neural networks are vulnerable to small input perturbations known as adversarial attacks. Inspired by the fact that these adversaries are constructed by iteratively minimizing the confidence of a network for the true class label, we…

Machine Learning · Computer Science 2021-12-17 Motasem Alfarra , Juan C. Pérez , Ali Thabet , Adel Bibi , Philip H. S. Torr , Bernard Ghanem

This paper explores the connection between steganography and adversarial images. On the one hand, ste-ganalysis helps in detecting adversarial perturbations. On the other hand, steganography helps in forging adversarial perturbations that…

Cryptography and Security · Computer Science 2020-10-16 Benoît Bonnet , Teddy Furon , Patrick Bas

Though CNNs have achieved the state-of-the-art performance on various vision tasks, they are vulnerable to adversarial examples --- crafted by adding human-imperceptible perturbations to clean images. However, most of the existing…

Computer Vision and Pattern Recognition · Computer Science 2019-06-04 Cihang Xie , Zhishuai Zhang , Yuyin Zhou , Song Bai , Jianyu Wang , Zhou Ren , Alan Yuille

Unrestricted adversarial attacks typically manipulate the semantic content of an image (e.g., color or texture) to create adversarial examples that are both effective and photorealistic, demonstrating their ability to deceive human…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Zhaoyu Chen , Bo Li , Shuang Wu , Kaixun Jiang , Shouhong Ding , Wenqiang Zhang

The colorization of grayscale images is an ill-posed problem, with multiple correct solutions. In this paper, we propose an adversarial learning colorization approach coupled with semantic information. A generative network is used to infer…

Computer Vision and Pattern Recognition · Computer Science 2020-01-22 Patricia Vitoria , Lara Raad , Coloma Ballester

We propose a novel lightweight generative adversarial network for efficient image manipulation using natural language descriptions. To achieve this, a new word-level discriminator is proposed, which provides the generator with fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2020-10-26 Bowen Li , Xiaojuan Qi , Philip H. S. Torr , Thomas Lukasiewicz

We present a mechanism for detecting adversarial examples based on data representations taken from the hidden layers of the target network. For this purpose, we train individual autoencoders at intermediate layers of the target network.…

Machine Learning · Computer Science 2020-06-18 Bartosz Wójcik , Paweł Morawiecki , Marek Śmieja , Tomasz Krzyżek , Przemysław Spurek , Jacek Tabor

Deep neural networks perform well on real world data but are prone to adversarial perturbations: small changes in the input easily lead to misclassification. In this work, we propose an attack methodology not only for cases where the…

Machine Learning · Computer Science 2019-10-09 Aram-Alexandre Pooladian , Chris Finlay , Tim Hoheisel , Adam Oberman

Deep neural networks are vulnerable to adversarial examples, which are crafted by adding small, human-imperceptible perturbations to the original images, but make the model output inaccurate predictions. Before deep neural networks are…

Computer Vision and Pattern Recognition · Computer Science 2021-01-13 Bo Yang , Kaiyong Xu , Hengjun Wang , Hengwei Zhang

Deep neural networks have been widely used in many computer vision tasks. However, it is proved that they are susceptible to small, imperceptible perturbations added to the input. Inputs with elaborately designed perturbations that can fool…

Computer Vision and Pattern Recognition · Computer Science 2020-10-29 Yusheng Zhao , Huanqian Yan , Xingxing Wei

Deep learning methods have shown state of the art performance in a range of tasks from computer vision to natural language processing. However, it is well known that such systems are vulnerable to attackers who craft inputs in order to…

Machine Learning · Computer Science 2020-09-29 Giulio Zizzo , Chris Hankin , Sergio Maffeis , Kevin Jones