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Motivated by previous observations that the usually applied $L_p$ norms ($p=1,2,\infty$) do not capture the perceptual quality of adversarial examples in image classification, we propose to replace these norms with the structural similarity…

机器学习 · 计算机科学 2021-02-16 Muhammad Zaid Hameed , Andras Gyorgy

For a standard convolutional neural network, optimizing over the input pixels to maximize the score of some target class will generally produce a grainy-looking version of the original image. However, Santurkar et al. (2019) demonstrated…

机器学习 · 计算机科学 2019-10-24 Simran Kaur , Jeremy Cohen , Zachary C. Lipton

Traditional image similarity metrics are ineffective at evaluating the similarity between a real image of a scene and an artificially generated version of that viewpoint [6, 9, 13, 14]. Our research evaluates the effectiveness of a new,…

计算机视觉与模式识别 · 计算机科学 2025-06-17 Charith Wickrema , Sara Leary , Shivangi Sarkar , Mark Giglio , Eric Bianchi , Eliza Mace , Michael Twardowski

Humans rely heavily on shape information to recognize objects. Conversely, convolutional neural networks (CNNs) are biased more towards texture. This is perhaps the main reason why CNNs are vulnerable to adversarial examples. Here, we…

计算机视觉与模式识别 · 计算机科学 2021-12-08 Ali Borji

As humans, we inherently perceive images based on their predominant features, and ignore noise embedded within lower bit planes. On the contrary, Deep Neural Networks are known to confidently misclassify images corrupted with meticulously…

计算机视觉与模式识别 · 计算机科学 2020-04-02 Sravanti Addepalli , Vivek B. S. , Arya Baburaj , Gaurang Sriramanan , R. Venkatesh Babu

Deep neural network-based image compression has been extensively studied. However, the model robustness which is crucial to practical application is largely overlooked. We propose to examine the robustness of prevailing learned image…

计算机视觉与模式识别 · 计算机科学 2023-06-09 Tong Chen , Zhan Ma

Convolutional neural networks have been used to achieve a string of successes during recent years, but their lack of interpretability remains a serious issue. Adversarial examples are designed to deliberately fool neural networks into…

机器学习 · 计算机科学 2020-04-28 Jan Philip Göpfert , André Artelt , Heiko Wersing , Barbara Hammer

It is well known that a determined adversary can fool a neural network by making imperceptible adversarial perturbations to an image. Recent studies have shown that these perturbations can be detected even without information about the…

计算机视觉与模式识别 · 计算机科学 2018-07-30 Siddharth Krishna Kumar

A fundamental challenge in artificial intelligence is learning useful representations of data that yield good performance on a downstream task, without overfitting to spurious input features. Extracting such task-relevant predictive…

机器学习 · 计算机科学 2021-06-15 Saeid Asgari Taghanaki , Kristy Choi , Amir Khasahmadi , Anirudh Goyal

Deep networks for computer vision are not reliable when they encounter adversarial examples. In this paper, we introduce a framework that uses the dense intrinsic constraints in natural images to robustify inference. By introducing…

计算机视觉与模式识别 · 计算机科学 2023-06-06 Chengzhi Mao , Lingyu Zhang , Abhishek Joshi , Junfeng Yang , Hao Wang , Carl Vondrick

Traditionally, the vision community has devised algorithms to estimate the distance between an original image and images that have been subject to perturbations. Inspiration was usually taken from the human visual perceptual system and how…

机器学习 · 计算机科学 2020-11-18 Alexander Hepburn , Valero Laparra , Jesús Malo , Ryan McConville , Raul Santos-Rodriguez

We present a novel method for generating robust adversarial image examples building upon the recent `deep image prior' (DIP) that exploits convolutional network architectures to enforce plausible texture in image synthesis. Adversarial…

计算机视觉与模式识别 · 计算机科学 2019-07-04 Thomas Gittings , Steve Schneider , John Collomosse

In order to design haptic icons or build a haptic vocabulary, we require a set of easily distinguishable haptic signals to avoid perceptual ambiguity, which in turn requires a way to accurately estimate the perceptual (dis)similarity of…

机器学习 · 计算机科学 2020-10-13 Priyadarshini Kumari , Siddhartha Chaudhuri , Subhasis Chaudhuri

Image-generating machine learning models are typically trained with loss functions based on distance in the image space. This often leads to over-smoothed results. We propose a class of loss functions, which we call deep perceptual…

机器学习 · 计算机科学 2016-02-10 Alexey Dosovitskiy , Thomas Brox

Measuring the similarity of images is a fundamental problem to computer vision for which no universal solution exists. While simple metrics such as the pixel-wise L2-norm have been shown to have significant flaws, they remain popular. One…

计算机视觉与模式识别 · 计算机科学 2022-07-07 Oskar Sjögren , Gustav Grund Pihlgren , Fredrik Sandin , Marcus Liwicki

Recent work suggests that representations learned by adversarially robust networks are more human perceptually-aligned than non-robust networks via image manipulations. Despite appearing closer to human visual perception, it is unclear if…

计算机视觉与模式识别 · 计算机科学 2022-02-07 Anne Harrington , Arturo Deza

Over the last few years, convolutional neural networks (CNNs) have proved to reach super-human performance in visual recognition tasks. However, CNNs can easily be fooled by adversarial examples, i.e., maliciously-crafted images that force…

计算机视觉与模式识别 · 计算机科学 2021-08-17 Federico Nesti , Alessandro Biondi , Giorgio Buttazzo

The vulnerability of deep image classification networks to adversarial attack is now well known, but less well understood. Via a novel experimental analysis, we illustrate some facts about deep convolutional networks for image…

计算机视觉与模式识别 · 计算机科学 2019-01-10 Saumya Jetley , Nicholas A. Lord , Philip H. S. Torr

"Thinking in pictures," [1] i.e., spatial-temporal reasoning, effortless and instantaneous for humans, is believed to be a significant ability to perform logical induction and a crucial factor in the intellectual history of technology…

计算机视觉与模式识别 · 计算机科学 2019-12-03 Chi Zhang , Baoxiong Jia , Feng Gao , Yixin Zhu , Hongjing Lu , Song-Chun Zhu

Deep neural networks are known to be vulnerable to adversarial perturbations. The amount of these perturbations are generally quantified using $L_p$ metrics, such as $L_0$, $L_2$ and $L_\infty$. However, even when the measured perturbations…

计算机视觉与模式识别 · 计算机科学 2023-10-24 Ayberk Aydin , Alptekin Temizel