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Existing learning-based atmospheric particle-removal approaches such as those used for rainy and hazy images are designed with strong assumptions regarding spatial frequency, trajectory, and translucency. However, the removal of snow…

Computer Vision and Pattern Recognition · Computer Science 2018-05-09 Yun-Fu Liu , Da-Wei Jaw , Shih-Chia Huang , Jenq-Neng Hwang

Anomaly detection is the process of finding data points that deviate from a baseline. In a real-life setting, anomalies are usually unknown or extremely rare. Moreover, the detection must be accomplished in a timely manner or the risk of…

Machine Learning · Computer Science 2019-04-26 Mariem Ben Fadhel , Kofi Nyarko

In this paper, we introduce a novel network, called discriminative feature network (DFNet), to address the unsupervised video object segmentation task. To capture the inherent correlation among video frames, we learn discriminative features…

Computer Vision and Pattern Recognition · Computer Science 2020-08-05 Mingmin Zhen , Shiwei Li , Lei Zhou , Jiaxiang Shang , Haoan Feng , Tian Fang , Long Quan

Anomaly recognition plays a vital role in surveillance, transportation, healthcare, and public safety. However, most existing approaches rely solely on visual data, making them unreliable under challenging conditions such as occlusion, low…

Computer Vision and Pattern Recognition · Computer Science 2025-11-12 Amjid Ali , Zulfiqar Ahmad Khan , Altaf Hussain , Muhammad Munsif , Adnan Hussain , Sung Wook Baik

Due to the advantages of real-time detection and improved performance, single-shot detectors have gained great attention recently. To solve the complex scale variations, single-shot detectors make scale-aware predictions based on multiple…

Computer Vision and Pattern Recognition · Computer Science 2020-01-22 Yazhao Li , Yanwei Pang , Jianbing Shen , Jiale Cao , Ling Shao

Deepfakes, synthetic images generated by deep learning algorithms, represent one of the biggest challenges in the field of Digital Forensics. The scientific community is working to develop approaches that can discriminate the origin of…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Orazio Pontorno , Luca Guarnera , Sebastiano Battiato

Time series anomaly detection plays a critical role in automated monitoring systems. Most previous deep learning efforts related to time series anomaly detection were based on recurrent neural networks (RNN). In this paper, we propose a…

Machine Learning · Computer Science 2019-06-03 Tailai Wen , Roy Keyes

Anomaly detection aims to distinguish observations that are rare and different from the majority. While most existing algorithms assume that instances are i.i.d., in many practical scenarios, links describing instance-to-instance…

Machine Learning · Computer Science 2019-10-10 Yuening Li , Xiao Huang , Jundong Li , Mengnan Du , Na Zou

Generative models now produce images with such stunning realism that they can easily deceive the human eye. While this progress unlocks vast creative potential, it also presents significant risks, such as the spread of misinformation.…

Computer Vision and Pattern Recognition · Computer Science 2026-01-29 Yichi Zhang , Xiaogang Xu

Weakly supervised detection of anomalies in surveillance videos is a challenging task. Going beyond existing works that have deficient capabilities to localize anomalies in long videos, we propose a novel glance and focus network to…

Computer Vision and Pattern Recognition · Computer Science 2022-12-01 Yingxian Chen , Zhengzhe Liu , Baoheng Zhang , Wilton Fok , Xiaojuan Qi , Yik-Chung Wu

Anomaly detection is widely used to distinguish system anomalies by analyzing the temporal and spatial features of wireless sensor network (WSN) data streams; it is one of critical technique that ensures the reliability of WSNs. Currently,…

Machine Learning · Computer Science 2022-02-23 Qinghao Zhang , Miao Ye , Hongbing Qiu , Yong Wang , Xiaofang Deng

Visual anomaly detection, an important problem in computer vision, is usually formulated as a one-class classification and segmentation task. The student-teacher (S-T) framework has proved to be effective in solving this challenge. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Xuan Zhang , Shiyu Li , Xi Li , Ping Huang , Jiulong Shan , Ting Chen

We address the problem of anomaly detection in videos. The goal is to identify unusual behaviours automatically by learning exclusively from normal videos. Most existing approaches are usually data-hungry and have limited generalization…

Computer Vision and Pattern Recognition · Computer Science 2020-07-16 Yiwei Lu , Frank Yu , Mahesh Kumar Krishna Reddy , Yang Wang

With the increase in the learning capability of deep convolution-based architectures, various applications of such models have been proposed over time. In the field of anomaly detection, improvements in deep learning opened new prospects of…

Computer Vision and Pattern Recognition · Computer Science 2021-05-25 Jin-Ha Lee , Marcella Astrid , Muhammad Zaigham Zaheer , Seung-Ik Lee

In practice, digital pathology images are often affected by various factors, resulting in very large differences in color and brightness. Stain normalization can effectively reduce the differences in color and brightness of digital…

Image and Video Processing · Electrical Eng. & Systems 2024-07-17 Hongtao Kang , Die Luo , Li Chen , Junbo Hu , Tingwei Quan , Shaoqun Zeng , Shenghua Cheng , Xiuli Liu

We introduce SANDesc, a Streamlined Attention-Based Network for Descriptor extraction that aims to improve on existing architectures for keypoint description. Our descriptor network learns to compute descriptors that improve matching…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Mattia D'Urso , Emanuele Santellani , Christian Sormann , Mattia Rossi , Andreas Kuhn , Friedrich Fraundorfer

Due to the intractability of characterizing everything that looks unlike the normal data, anomaly detection (AD) is traditionally treated as an unsupervised problem utilizing only normal samples. However, it has recently been found that…

Computer Vision and Pattern Recognition · Computer Science 2023-01-29 Philipp Liznerski , Lukas Ruff , Robert A. Vandermeulen , Billy Joe Franks , Klaus-Robert Müller , Marius Kloft

Due to the fast inference and good performance, discriminative learning methods have been widely studied in image denoising. However, these methods mostly learn a specific model for each noise level, and require multiple models for…

Computer Vision and Pattern Recognition · Computer Science 2018-08-01 Kai Zhang , Wangmeng Zuo , Lei Zhang

Few-shot learning aims to recognize novel concepts by leveraging prior knowledge learned from a few samples. However, for visually intensive tasks such as few-shot semantic segmentation, pixel-level annotations are time-consuming and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-30 Jiaqi Ma , Guo-Sen Xie , Fang Zhao , Zechao Li

Few-shot anomaly detection streamlines and simplifies industrial safety inspection. However, limited samples make accurate differentiation between normal and abnormal features challenging, and even more so under category-agnostic…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Guangyao Zhai , Yue Zhou , Xinyan Deng , Lars Heckler , Nassir Navab , Benjamin Busam
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