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Face spoofing causes severe security threats in face recognition systems. Previous anti-spoofing works focused on supervised techniques, typically with either binary or auxiliary supervision. Most of them suffer from limited robustness and…

计算机视觉与模式识别 · 计算机科学 2020-05-25 Chengwei Chen , Wang Yuan , Xuequan Lu , Lizhuang Ma

Regarding image forensics, researchers have proposed various approaches to detect and/or localize manipulations, such as splices. Recent best performing image-forensics algorithms greatly benefit from the application of deep learning, but…

计算机视觉与模式识别 · 计算机科学 2020-04-21 Andras Rozsa , Zheng Zhong , Terrance E. Boult

Adversarial attacks pose a threat to deep learning models. However, research on adversarial detection methods, especially in the multi-modal domain, is very limited. In this work, we propose an efficient and straightforward detection method…

计算机视觉与模式识别 · 计算机科学 2021-02-15 Pingchuan Ma , Stavros Petridis , Maja Pantic

Spatial transcriptomics clustering is pivotal for identifying cell subpopulations by leveraging spatial location information. While recent graph-based methods modeling cell-cell interactions have improved clustering accuracy, they remain…

机器学习 · 计算机科学 2026-01-21 Chenkai Guo , Yikai Zhu , Renxiang Guan , Jinli Ma , Siwei Wang , Ke Liang , Guangdun Peng , Dayu Hu

Although deep learning-based visual tracking methods have made significant progress, they exhibit vulnerabilities when facing carefully designed adversarial attacks, which can lead to a sharp decline in tracking performance. To address this…

计算机视觉与模式识别 · 计算机科学 2025-06-03 Long Xu , Peng Gao , Wen-Jia Tang , Fei Wang , Ru-Yue Yuan

The Audio Deep Synthesis Detection (ADD) Challenge has been held to detect generated human-like speech. With our submitted system, this paper provides an overall assessment of track 1 (Low-quality Fake Audio Detection) and track 2…

声音 · 计算机科学 2022-10-12 Xiaohui Liu , Meng Liu , Lin Zhang , Linjuan Zhang , Chang Zeng , Kai Li , Nan Li , Kong Aik Lee , Longbiao Wang , Jianwu Dang

Federated neuromorphic learning (FedNL) leverages event-driven spiking neural networks and federated learning frameworks to effectively execute intelligent analysis tasks over amounts of distributed low-power devices but also perform…

密码学与安全 · 计算机科学 2024-03-28 Hanqing Fu , Gaolei Li , Jun Wu , Jianhua Li , Xi Lin , Kai Zhou , Yuchen Liu

Text-to-image diffusion models are increasingly vulnerable to backdoor attacks, where malicious modifications to the training data cause the model to generate unintended outputs when specific triggers are present. While classification…

密码学与安全 · 计算机科学 2025-04-29 Abha Jha , Ashwath Vaithinathan Aravindan , Matthew Salaway , Atharva Sandeep Bhide , Duygu Nur Yaldiz

The rapid evolution of generative adversarial networks (GANs) and diffusion models has made synthetic media increasingly realistic, raising societal concerns around misinformation, identity fraud, and digital trust. Existing deepfake…

计算机视觉与模式识别 · 计算机科学 2025-11-03 Sales Aribe

State-of-the-art deep neural networks have proven to be highly powerful in a broad range of tasks, including semantic image segmentation. However, these networks are vulnerable against adversarial attacks, i.e., non-perceptible…

计算机视觉与模式识别 · 计算机科学 2025-11-27 Kira Maag , Asja Fischer

This paper proposes an audio-visual deepfake detection approach that aims to capture fine-grained temporal inconsistencies between audio and visual modalities. To achieve this, both architectural and data synthesis strategies are…

计算机视觉与模式识别 · 计算机科学 2025-03-14 Marcella Astrid , Enjie Ghorbel , Djamila Aouada

This paper presents the concept of spread-spectrum selective camouflaging based on time-modulated metasurface. The spectrum spreading is realized by switching the metasurface between the reflective states of a PEC mirror and a PMC mirror,…

应用物理 · 物理学 2019-09-11 Xiaoyi Wang , Christophe Caloz

Deep learning models are widely employed in safety-critical applications yet remain susceptible to adversarial attacks -- imperceptible perturbations that can significantly degrade model performance. Conventional defense mechanisms…

计算机视觉与模式识别 · 计算机科学 2025-10-28 Eylon Mizrahi , Raz Lapid , Moshe Sipper

Supervised learning-based adversarial attack detection methods rely on a large number of labeled data and suffer significant performance degradation when applying the trained model to new domains. In this paper, we propose a self-supervised…

计算机视觉与模式识别 · 计算机科学 2024-07-08 Yi Li , Plamen Angelov , Neeraj Suri

Fall detection is an important problem from both the health and machine learning perspective. A fall can lead to severe injuries, long term impairments or even death in some cases. In terms of machine learning, it presents a severely class…

机器学习 · 计算机科学 2020-07-24 Shehroz S. Khan , Jacob Nogas , Alex Mihailidis

While audio-visual learning equips models with a richer understanding of the real world by leveraging multiple sensory modalities, this integration also introduces new vulnerabilities to adversarial attacks. In this paper, we present a…

声音 · 计算机科学 2025-03-04 Zeliang Zhang , Susan Liang , Daiki Shimada , Chenliang Xu

Deepfake represents a category of face-swapping attacks that leverage machine learning models such as autoencoders or generative adversarial networks. Although the concept of the face-swapping is not new, its recent technical advances make…

计算机视觉与模式识别 · 计算机科学 2020-06-16 Chaofei Yang , Lei Ding , Yiran Chen , Hai Li

Visual surveillance aims to perform robust foreground object detection regardless of the time and place. Object detection shows good results using only spatial information, but foreground object detection in visual surveillance requires…

计算机视觉与模式识别 · 计算机科学 2022-09-20 Keong-Hun Choi , Jong-Eun Ha

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

In neural network (NN) security, safeguarding model integrity and resilience against adversarial attacks has become paramount. This study investigates the application of stochastic computing (SC) as a novel mechanism to fortify NN models.…

密码学与安全 · 计算机科学 2024-07-09 Faeze S. Banitaba , Sercan Aygun , M. Hassan Najafi