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Recent work has shown that additive threat models, which only permit the addition of bounded noise to the pixels of an image, are insufficient for fully capturing the space of imperceivable adversarial examples. For example, small rotations…

Machine Learning · Statistics 2019-02-25 Matt Jordan , Naren Manoj , Surbhi Goel , Alexandros G. Dimakis

Despite extensive research into adversarial attacks, we do not know how adversarial attacks affect image pixels. Knowing how image pixels are affected by adversarial attacks has the potential to lead us to better adversarial defenses.…

Computer Vision and Pattern Recognition · Computer Science 2021-06-22 Blerta Lindqvist

Deep Neural Networks have been shown to be vulnerable to various kinds of adversarial perturbations. In addition to widely studied additive noise based perturbations, adversarial examples can also be created by applying a per pixel spatial…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Ayberk Aydin , Deniz Sen , Berat Tuna Karli , Oguz Hanoglu , Alptekin Temizel

We propose an approach to distinguish between correct and incorrect image classifications. Our approach can detect misclassifications which either occur $\it{unintentionally}$ ("natural errors"), or due to…

Machine Learning · Computer Science 2019-02-04 Yuval Bahat , Michal Irani , Gregory Shakhnarovich

The literature on adversarial attacks in computer vision typically focuses on pixel-level perturbations. These tend to be very difficult to interpret. Recent work that manipulates the latent representations of image generators to create…

Machine Learning · Computer Science 2023-09-12 Stephen Casper , Max Nadeau , Dylan Hadfield-Menell , Gabriel Kreiman

Adversarial machine learning has been both a major concern and a hot topic recently, especially with the ubiquitous use of deep neural networks in the current landscape. Adversarial attacks and defenses are usually likened to a…

Computer Vision and Pattern Recognition · Computer Science 2022-12-08 Ngoc N. Tran , Anh Tuan Bui , Dinh Phung , Trung Le

As the name suggests, image spam is spam email that has been embedded in an image. Image spam was developed in an effort to evade text-based filters. Modern deep learning-based classifiers perform well in detecting typical image spam that…

Cryptography and Security · Computer Science 2021-03-10 Andy Phung , Mark Stamp

Adversarial robustness corresponds to the susceptibility of deep neural networks to imperceptible perturbations made at test time. In the context of image tasks, many algorithms have been proposed to make neural networks robust to…

Computer Vision and Pattern Recognition · Computer Science 2020-12-03 Pranjal Awasthi , George Yu , Chun-Sung Ferng , Andrew Tomkins , Da-Cheng Juan

Deep neural network image classifiers are reported to be susceptible to adversarial evasion attacks, which use carefully crafted images created to mislead a classifier. Many adversarial attacks belong to the category of dense attacks, which…

Computer Vision and Pattern Recognition · Computer Science 2022-02-22 He Zhao , Thanh Nguyen , Trung Le , Paul Montague , Olivier De Vel , Tamas Abraham , Dinh Phung

Natural images are virtually surrounded by low-density misclassified regions that can be efficiently discovered by gradient-guided search --- enabling the generation of adversarial images. While many techniques for detecting these attacks…

Machine Learning · Computer Science 2019-12-05 Tao Yu , Shengyuan Hu , Chuan Guo , Wei-Lun Chao , Kilian Q. Weinberger

Over the past decade, Deep Learning has emerged as a useful and efficient tool to solve a wide variety of complex learning problems ranging from image classification to human pose estimation, which is challenging to solve using statistical…

Computer Vision and Pattern Recognition · Computer Science 2020-05-19 Ashutosh Chaubey , Nikhil Agrawal , Kavya Barnwal , Keerat K. Guliani , Pramod Mehta

We propose a probabilistic perspective on adversarial examples, allowing us to embed subjective understanding of semantics as a distribution into the process of generating adversarial examples, in a principled manner. Despite significant…

Machine Learning · Statistics 2024-11-26 Andi Zhang , Mingtian Zhang , Damon Wischik

We show that the representation of an image in a deep neural network (DNN) can be manipulated to mimic those of other natural images, with only minor, imperceptible perturbations to the original image. Previous methods for generating…

Computer Vision and Pattern Recognition · Computer Science 2016-03-07 Sara Sabour , Yanshuai Cao , Fartash Faghri , David J. Fleet

Existing pixel-level adversarial attacks on neural networks may be deficient in real scenarios, since pixel-level changes on the data cannot be fully delivered to the neural network after camera capture and multiple image preprocessing…

Computer Vision and Pattern Recognition · Computer Science 2020-12-22 Chenchen Zhao , Hao Li

Adversarial training (AT) trains models using adversarial examples (AEs), which are natural images modified with specific perturbations to mislead the model. These perturbations are constrained by a predefined perturbation budget $\epsilon$…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Jiacheng Zhang , Feng Liu , Dawei Zhou , Jingfeng Zhang , Tongliang Liu

Modern neural networks excel at image classification, yet they remain vulnerable to common image corruptions such as blur, speckle noise or fog. Recent methods that focus on this problem, such as AugMix and DeepAugment, introduce defenses…

Computer Vision and Pattern Recognition · Computer Science 2021-12-20 Dan A. Calian , Florian Stimberg , Olivia Wiles , Sylvestre-Alvise Rebuffi , Andras Gyorgy , Timothy Mann , Sven Gowal

Traditional adversarial attacks typically aim to alter the predicted labels of input images by generating perturbations that are imperceptible to the human eye. However, these approaches often lack explainability. Moreover, most existing…

Computer Vision and Pattern Recognition · Computer Science 2025-04-17 Akram Heidarizadeh , Connor Hatfield , Lorenzo Lazzarotto , HanQin Cai , George Atia

Adversarial algorithms have shown to be effective against neural networks for a variety of tasks. Some adversarial algorithms perturb all the pixels in the image minimally for the image classification task in image classification. In…

Computer Vision and Pattern Recognition · Computer Science 2021-06-11 Shashank Kotyan , Danilo Vasconcellos Vargas

Adversarial examples have raised questions regarding the robustness and security of deep neural networks. In this work we formalize the problem of adversarial images given a pretrained classifier, showing that even in the linear case the…

Neural and Evolutionary Computing · Computer Science 2016-06-24 Pedro Tabacof , Eduardo Valle

Generative Adversarial Networks (GANs) have proven successful for unsupervised image generation. Several works have extended GANs to image inpainting by conditioning the generation with parts of the image to be reconstructed. Despite their…

Image and Video Processing · Electrical Eng. & Systems 2020-02-05 Cyprien Ruffino , Romain Hérault , Eric Laloy , Gilles Gasso