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Deep Neural Networks (DNNs) have demonstrated exceptional performance on most recognition tasks such as image classification and segmentation. However, they have also been shown to be vulnerable to adversarial examples. This phenomenon has…

Computer Vision and Pattern Recognition · Computer Science 2018-07-10 Anurag Arnab , Ondrej Miksik , Philip H. S. Torr

Adversarial attacks present a critical challenge to deep neural networks' robustness, particularly in transfer scenarios across different model architectures. However, the transferability of adversarial attacks faces a fundamental dilemma…

Machine Learning · Computer Science 2025-11-04 Zenghao Niu , Weicheng Xie , Siyang Song , Zitong Yu , Feng Liu , Linlin Shen

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

We propose a method for semi-supervised semantic segmentation using an adversarial network. While most existing discriminators are trained to classify input images as real or fake on the image level, we design a discriminator in a fully…

Computer Vision and Pattern Recognition · Computer Science 2018-07-26 Wei-Chih Hung , Yi-Hsuan Tsai , Yan-Ting Liou , Yen-Yu Lin , Ming-Hsuan Yang

The existence of real-world adversarial examples (commonly in the form of patches) poses a serious threat for the use of deep learning models in safety-critical computer vision tasks such as visual perception in autonomous driving. This…

Computer Vision and Pattern Recognition · Computer Science 2025-09-10 Giulio Rossolini , Federico Nesti , Gianluca D'Amico , Saasha Nair , Alessandro Biondi , Giorgio Buttazzo

Adversarial attacks, particularly the Fast Gradient Sign Method (FGSM) and Projected Gradient Descent (PGD) pose significant threats to the robustness of deep learning models in image classification. This paper explores and refines defense…

Cryptography and Security · Computer Science 2025-05-15 Hetvi Waghela , Jaydip Sen , Sneha Rakshit

Projected Gradient Descent (PGD) is a strong and widely used first-order adversarial attack, yet its computational cost scales poorly, as all training samples undergo identical iterative inner-loop optimization despite contributing…

Machine Learning · Computer Science 2025-12-29 Youran Ye , Dejin Wang , Ajinkya Bhandare

Adversarial transferability remains a critical challenge in evaluating the robustness of deep neural networks. In security-critical applications, transferability enables black-box attacks without access to model internals, making it a key…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Amira Guesmi , Bassem Ouni , Muhammad Shafique

While 3D instance segmentation (3DIS) has advanced significantly, most existing methods assume that all object classes are known in advance and uniformly distributed. However, this assumption is unrealistic in dynamic, real-world…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Vishal Thengane , Jean Lahoud , Hisham Cholakkal , Rao Muhammad Anwer , Lu Yin , Xiatian Zhu , Salman Khan

Current adversarial attack research reveals the vulnerability of learning-based classifiers against carefully crafted perturbations. However, most existing attack methods have inherent limitations in cross-dataset generalization as they…

Computer Vision and Pattern Recognition · Computer Science 2022-03-25 Cheng Luo , Qinliang Lin , Weicheng Xie , Bizhu Wu , Jinheng Xie , Linlin Shen

Transferable targeted adversarial attacks aim to mislead models into outputting adversary-specified predictions in black-box scenarios. Recent studies have introduced \textit{single-target} generative attacks that train a generator for each…

Computer Vision and Pattern Recognition · Computer Science 2024-10-04 Hao Fang , Jiawei Kong , Bin Chen , Tao Dai , Hao Wu , Shu-Tao Xia

Semantic segmentation is a task that traditionally requires a large dataset of pixel-level ground truth labels, which is time-consuming and expensive to obtain. Recent advancements in the weakly-supervised setting show that reasonable…

Computer Vision and Pattern Recognition · Computer Science 2020-11-10 Erik Stammes , Tom F. H. Runia , Michael Hofmann , Mohsen Ghafoorian

Domain adaptive semantic segmentation attempts to make satisfactory dense predictions on an unlabeled target domain by utilizing the supervised model trained on a labeled source domain. In this work, we propose Semantic-Guided Pixel…

Computer Vision and Pattern Recognition · Computer Science 2023-02-21 Binhui Xie , Shuang Li , Mingjia Li , Chi Harold Liu , Gao Huang , Guoren Wang

Graph neural networks (GNNs) which apply the deep neural networks to graph data have achieved significant performance for the task of semi-supervised node classification. However, only few work has addressed the adversarial robustness of…

Machine Learning · Computer Science 2019-10-16 Kaidi Xu , Hongge Chen , Sijia Liu , Pin-Yu Chen , Tsui-Wei Weng , Mingyi Hong , Xue Lin

Collecting labeled data for the task of semantic segmentation is expensive and time-consuming, as it requires dense pixel-level annotations. While recent Convolutional Neural Network (CNN) based semantic segmentation approaches have…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Xiangyun Zhao , Raviteja Vemulapalli , Philip Mansfield , Boqing Gong , Bradley Green , Lior Shapira , Ying Wu

It has become cognitive inertia to employ cross-entropy loss function in classification related tasks. In the untargeted attacks on graph structure, the gradients derived from the attack objective are the attacker's basis for evaluating a…

Machine Learning · Computer Science 2023-04-04 Zihan Liu , Yun Luo , Lirong Wu , Zicheng Liu , Stan Z. Li

Although there is significant progress in supervised semantic segmentation, it remains challenging to deploy the segmentation models to unseen domains due to domain biases. Domain adaptation can help in this regard by transferring knowledge…

Computer Vision and Pattern Recognition · Computer Science 2022-05-03 Binhui Xie , Mingjia Li , Shuang Li

We consider the problem of unsupervised domain adaptation in semantic segmentation. The key in this campaign consists in reducing the domain shift, i.e., enforcing the data distributions of the two domains to be similar. A popular strategy…

Computer Vision and Pattern Recognition · Computer Science 2019-04-02 Yawei Luo , Liang Zheng , Tao Guan , Junqing Yu , Yi Yang

Semantic segmentation has been a long standing challenging task in computer vision. It aims at assigning a label to each image pixel and needs significant number of pixellevel annotated data, which is often unavailable. To address this…

Computer Vision and Pattern Recognition · Computer Science 2017-03-29 Nasim Souly , Concetto Spampinato , Mubarak Shah

Recent studies have shown that graph neural networks (GNNs) are vulnerable against perturbations due to lack of robustness and can therefore be easily fooled. Currently, most works on attacking GNNs are mainly using gradient information to…

Machine Learning · Computer Science 2021-05-07 Jintang Li , Tao Xie , Liang Chen , Fenfang Xie , Xiangnan He , Zibin Zheng