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Adversarial attacks to image classification systems present challenges to convolutional networks and opportunities for understanding them. This study suggests that adversarial perturbations on images lead to noise in the features…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Cihang Xie , Yuxin Wu , Laurens van der Maaten , Alan Yuille , Kaiming He

We propose a simple, efficient, yet powerful framework for dense visual predictions based on the conditional diffusion pipeline. Our approach follows a "noise-to-map" generative paradigm for prediction by progressively removing noise from a…

Computer Vision and Pattern Recognition · Computer Science 2023-05-16 Yuanfeng Ji , Zhe Chen , Enze Xie , Lanqing Hong , Xihui Liu , Zhaoqiang Liu , Tong Lu , Zhenguo Li , Ping Luo

Despite the efficacy on a variety of computer vision tasks, deep neural networks (DNNs) are vulnerable to adversarial attacks, limiting their applications in security-critical systems. Recent works have shown the possibility of generating…

Computer Vision and Pattern Recognition · Computer Science 2018-12-21 Ziang Yan , Yiwen Guo , Changshui Zhang

Recent advancements in diffusion models have demonstrated significant success in unsupervised anomaly segmentation. For anomaly segmentation, these models are first trained on normal data; then, an anomalous image is noised to an…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Mehrdad Moradi , Kamran Paynabar

Denoising diffusion probabilistic models (DDPMs) have achieved impressive performance on various image generation tasks, including image super-resolution. By learning to reverse the process of gradually diffusing the data distribution into…

Image and Video Processing · Electrical Eng. & Systems 2023-07-25 Kai Zhao , Alex Ling Yu Hung , Kaifeng Pang , Haoxin Zheng , Kyunghyun Sung

This study delves into the enhancement of Under-Display Camera (UDC) image restoration models, focusing on their robustness against adversarial attacks. Despite its innovative approach to seamless display integration, UDC technology faces…

Image and Video Processing · Electrical Eng. & Systems 2024-11-04 Zhenbo Song , Zhenyuan Zhang , Kaihao Zhang , Zhaoxin Fan , Jianfeng Lu

Recent studies have shown that deep neural networks (DNN) are vulnerable to adversarial samples: maliciously-perturbed samples crafted to yield incorrect model outputs. Such attacks can severely undermine DNN systems, particularly in…

Machine Learning · Computer Science 2017-04-28 Ji Gao , Beilun Wang , Zeming Lin , Weilin Xu , Yanjun Qi

In the ever-evolving adversarial machine learning landscape, developing effective defenses against patch attacks has become a critical challenge, necessitating reliable solutions to safeguard real-world AI systems. Although diffusion models…

Computer Vision and Pattern Recognition · Computer Science 2024-11-15 Jia Fu , Xiao Zhang , Sepideh Pashami , Fatemeh Rahimian , Anders Holst

Out-of-distribution detection is crucial to the safe deployment of machine learning systems. Currently, unsupervised out-of-distribution detection is dominated by generative-based approaches that make use of estimates of the likelihood or…

Following the recent adoption of deep neural networks (DNN) accross a wide range of applications, adversarial attacks against these models have proven to be an indisputable threat. Adversarial samples are crafted with a deliberate intention…

Machine Learning · Computer Science 2017-08-31 Valentina Zantedeschi , Maria-Irina Nicolae , Ambrish Rawat

The deep neural networks are known to be vulnerable to well-designed adversarial attacks. The most successful defense technique based on adversarial training (AT) can achieve optimal robustness against particular attacks but cannot…

Computer Vision and Pattern Recognition · Computer Science 2024-08-26 Guang Lin , Chao Li , Jianhai Zhang , Toshihisa Tanaka , Qibin Zhao

Deep neural networks (DNNs) have been found to be vulnerable to adversarial examples. Adversarial examples are malicious images with visually imperceptible perturbations. While these carefully crafted perturbations restricted with tight…

Computer Vision and Pattern Recognition · Computer Science 2021-07-06 Yajie Wang , Shangbo Wu , Wenyi Jiang , Shengang Hao , Yu-an Tan , Quanxin Zhang

We propose Adaptive Diffusion Denoised Smoothing, a method for certifying the predictions of a vision model against adversarial examples, while adapting to the input. Our key insight is to reinterpret a guided denoising diffusion model as a…

Computer Vision and Pattern Recognition · Computer Science 2025-07-14 Frederick Shpilevskiy , Saiyue Lyu , Krishnamurthy Dj Dvijotham , Mathias Lécuyer , Pierre-André Noël

With the increasing attention to deep neural network (DNN) models, attacks are also upcoming for such models. For example, an attacker may carefully construct images in specific ways (also referred to as adversarial examples) aiming to…

Computer Vision and Pattern Recognition · Computer Science 2024-01-08 Yuexin Xiang , Tiantian Li , Wei Ren , Tianqing Zhu , Kim-Kwang Raymond Choo

Personalized diffusion models (PDMs) have become prominent for adapting pre-trained text-to-image models to generate images of specific subjects using minimal training data. However, PDMs are susceptible to minor adversarial perturbations,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-18 Yixin Liu , Ruoxi Chen , Xun Chen , Lichao Sun

This work presents a robust multi-class classification framework for handwritten digits that combines diffusion-driven feature denoising with a hybrid feature representation. Inspired by our previous work on brain tumor classification, the…

Computer Vision and Pattern Recognition · Computer Science 2026-05-14 Hiba Adil Al-kharsan , Róbert Rajkó

This paper is concerned with the defense of deep models against adversarial attacks. Inspired by the certificate defense approach, we propose a maximal adversarial distortion (MAD) optimization method for robustifying deep networks. MAD…

Machine Learning · Computer Science 2020-06-16 Shai Rozenberg , Gal Elidan , Ran El-Yaniv

Deep learning (DL)-based Network Intrusion Detection System (NIDS) has demonstrated great promise in detecting malicious network traffic. However, they face significant security risks due to their vulnerability to adversarial examples…

Cryptography and Security · Computer Science 2026-03-11 Pratyay Kumar , Abu Saleh Md Tayeen , Satyajayant Misra , Huiping Cao , Jiefei Liu , Qixu Gong , Jayashree Harikumar

DNN is presenting human-level performance for many complex intelligent tasks in real-world applications. However, it also introduces ever-increasing security concerns. For example, the emerging adversarial attacks indicate that even very…

Machine Learning · Computer Science 2018-03-21 Qi Liu , Tao Liu , Zihao Liu , Yanzhi Wang , Yier Jin , Wujie Wen

Deep learning has made tremendous advances in computer vision tasks such as image classification. However, recent studies have shown that deep learning models are vulnerable to specifically crafted adversarial inputs that are…

Computer Vision and Pattern Recognition · Computer Science 2019-12-11 Kirthi Shankar Sivamani