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The rapid growth of deep learning has brought about powerful models that can handle various tasks, like identifying images and understanding language. However, adversarial attacks, an unnoticed alteration, can deceive models, leading to…

计算机视觉与模式识别 · 计算机科学 2025-11-18 Sampriti Soor , Alik Pramanick , Jothiprakash K , Arijit Sur

Crowd scenes captured by cameras at different locations vary greatly, and existing crowd models have limited generalization for unseen surveillance scenes. To improve the generalization of the model, we regard different surveillance scenes…

计算机视觉与模式识别 · 计算机科学 2026-02-10 Jiwei Chen , Qi Wang , Junyu Gao , Jing Zhang , Dingyi Li , Jing-Jia Luo

As a defense strategy against adversarial attacks, adversarial detection aims to identify and filter out adversarial data from the data flow based on discrepancies in distribution and noise patterns between natural and adversarial data.…

计算机视觉与模式识别 · 计算机科学 2025-03-06 Qian Wang , Chen Li , Yuchen Luo , Hefei Ling , Shijuan Huang , Ruoxi Jia , Ning Yu

Adversarial perturbations of normal images are usually imperceptible to humans, but they can seriously confuse state-of-the-art machine learning models. What makes them so special in the eyes of image classifiers? In this paper, we show…

机器学习 · 计算机科学 2018-05-22 Yang Song , Taesup Kim , Sebastian Nowozin , Stefano Ermon , Nate Kushman

In the field of crowd counting, the current mainstream CNN-based regression methods simply extract the density information of pedestrians without finding the position of each person. This makes the output of the network often found to…

计算机视觉与模式识别 · 计算机科学 2022-01-25 Yi Hou , Chengyang Li , Fan Yang , Cong Ma , Liping Zhu , Yuan Li , Huizhu Jia , Xiaodong Xie

The presence of adversarial examples poses a significant threat to deep learning models and their applications. Existing defense methods provide certain resilience against adversarial examples, but often suffer from decreased accuracy and…

密码学与安全 · 计算机科学 2023-11-27 Jiahao Chen , Diqun Yan , Li Dong

For crowded scenes, the accuracy of object-based computer vision methods declines when the images are low-resolution and objects have severe occlusions. Taking counting methods for example, almost all the recent state-of-the-art counting…

计算机视觉与模式识别 · 计算机科学 2018-06-14 Di Kang , Zheng Ma , Antoni B. Chan

Adversarial attacks have been recently investigated in person re-identification. These attacks perform well under cross dataset or cross model setting. However, the challenges present in cross-dataset cross-model scenario does not allow…

计算机视觉与模式识别 · 计算机科学 2023-01-18 A V Subramanyam

Gradient-based adversarial attacks are widely used to evaluate the robustness of 3D point cloud classifiers, yet they often rely on uniform update rules that neglect point-wise heterogeneity, leading to perceptible perturbations. We propose…

计算机视觉与模式识别 · 计算机科学 2026-03-20 Jun Chen , Xinke Li , Mingyue Xu , Chongshou Li , Truiani Li

In crowd counting datasets, each person is annotated by a point, which is usually the center of the head. And the task is to estimate the total count in a crowd scene. Most of the state-of-the-art methods are based on density map…

计算机视觉与模式识别 · 计算机科学 2019-08-13 Zhiheng Ma , Xing Wei , Xiaopeng Hong , Yihong Gong

Recently, generative adversarial networks (GANs) can generate photo-realistic fake facial images which are perceptually indistinguishable from real face photos, promoting research on fake face detection. Though fake face forensics can…

计算机视觉与模式识别 · 计算机科学 2020-11-02 Yongwei Wang , Xin Ding , Li Ding , Rabab Ward , Z. Jane Wang

In recent years, with the progress of deep learning technologies, crowd counting has been rapidly developed. In this work, we propose a simple yet effective crowd counting framework that is able to achieve the state-of-the-art performance…

计算机视觉与模式识别 · 计算机科学 2020-06-16 Yue Gu , Wenxi Liu

Neural networks are known to be vulnerable to carefully crafted adversarial examples, and these malicious samples often transfer, i.e., they remain adversarial even against other models. Although great efforts have been delved into the…

图像与视频处理 · 电气工程与系统科学 2019-11-27 Yantao Lu , Yunhan Jia , Jianyu Wang , Bai Li , Weiheng Chai , Lawrence Carin , Senem Velipasalar

Imperceptible adversarial attacks aim to fool DNNs by adding imperceptible perturbation to the input data. Previous methods typically improve the imperceptibility of attacks by integrating common attack paradigms with specifically designed…

机器学习 · 计算机科学 2025-03-13 Jin Li , Ziqiang He , Anwei Luo , Jian-Fang Hu , Z. Jane Wang , Xiangui Kang

Deep neural networks are vulnerable to adversarial examples, which are crafted by adding human-imperceptible perturbations to original images. Most existing adversarial attack methods achieve nearly 100% attack success rates under the…

计算机视觉与模式识别 · 计算机科学 2022-04-15 Guoqiu Wang , Huanqian Yan , Ying Guo , Xingxing Wei

When generating adversarial examples to attack deep neural networks (DNNs), Lp norm of the added perturbation is usually used to measure the similarity between original image and adversarial example. However, such adversarial attacks…

机器学习 · 计算机科学 2019-02-21 Kaidi Xu , Sijia Liu , Pu Zhao , Pin-Yu Chen , Huan Zhang , Quanfu Fan , Deniz Erdogmus , Yanzhi Wang , Xue Lin

Convolutional neural networks have outperformed humans in image recognition tasks, but they remain vulnerable to attacks from adversarial examples. Since these data are crafted by adding imperceptible noise to normal images, their existence…

计算机视觉与模式识别 · 计算机科学 2021-06-10 Heng Yin , Hengwei Zhang , Jindong Wang , Ruiyu Dou

Transfer-based adversarial example is one of the most important classes of black-box attacks. However, there is a trade-off between transferability and imperceptibility of the adversarial perturbation. Prior work in this direction often…

计算机视觉与模式识别 · 计算机科学 2022-12-29 Fangcheng Liu , Chao Zhang , Hongyang Zhang

State-of-the-art methods for counting people in crowded scenes rely on deep networks to estimate crowd density. They typically use the same filters over the whole image or over large image patches. Only then do they estimate local scale to…

计算机视觉与模式识别 · 计算机科学 2019-04-16 Weizhe Liu , Mathieu Salzmann , Pascal Fua

Recent years have witnessed the deployment of adversarial attacks to evaluate the robustness of Neural Networks. Past work in this field has relied on traditional optimization algorithms that ignore the inherent structure of the problem and…

机器学习 · 计算机科学 2021-06-01 Florian Jaeckle , M. Pawan Kumar