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Incorporating multiple camera views for detection alleviates the impact of occlusions in crowded scenes. In a multiview system, we need to answer two important questions when dealing with ambiguities that arise from occlusions. First, how…

Computer Vision and Pattern Recognition · Computer Science 2021-05-04 Yunzhong Hou , Liang Zheng , Stephen Gould

Anomaly detection tools and methods present a key capability in modern cyberphysical and failure prediction systems. Despite the fast-paced development in deep learning architectures for anomaly detection, model optimization for a given…

Machine Learning · Computer Science 2023-05-29 Marcin Pietron , Dominik Zurek , Kamil Faber , Roberto Corizzo

Anomaly detection from images captured using camera sensors is one of the mainstream applications at the industrial level. Particularly, it maintains the quality and optimizes the efficiency in production processes across diverse industrial…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Abdelrahman Alzarooni , Ehtesham Iqbal , Samee Ullah Khan , Sajid Javed , Brain Moyo , Yusra Abdulrahman

We present an end-to-end method for object detection and trajectory prediction utilizing multi-view representations of LiDAR returns and camera images. In this work, we recognize the strengths and weaknesses of different view…

Computer Vision and Pattern Recognition · Computer Science 2021-10-20 Sudeep Fadadu , Shreyash Pandey , Darshan Hegde , Yi Shi , Fang-Chieh Chou , Nemanja Djuric , Carlos Vallespi-Gonzalez

Recent studies highlighted a practical setting of unsupervised anomaly detection (UAD) that builds a unified model for multi-class images. Despite various advancements addressing this challenging task, the detection performance under the…

Computer Vision and Pattern Recognition · Computer Science 2025-04-03 Jia Guo , Shuai Lu , Weihang Zhang , Fang Chen , Huiqi Li , Hongen Liao

Recently, multi-class anomaly classification has garnered increasing attention. Previous methods directly cluster anomalies but often struggle due to the lack of anomaly-prior knowledge. Acquiring this knowledge faces two issues: the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-28 Ziming Huang , Xurui Li , Haotian Liu , Feng Xue , Yuzhe Wang , Yu Zhou

In multi-class unsupervised anomaly detection(MUAD), reconstruction-based methods learn to map input images to normal patterns to identify anomalous pixels. However, this strategy easily falls into the well-known "learning shortcut" issue…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Jiajie Quan , Ao Tong , Yuxuan Cai , Xinwei He , Yulong Wang , Yang Zhou

Anomaly Detection (AD) in images is a fundamental computer vision problem and refers to identifying images and image substructures that deviate significantly from the norm. Popular AD algorithms commonly try to learn a model of normality…

Computer Vision and Pattern Recognition · Computer Science 2020-10-26 Oliver Rippel , Patrick Mertens , Dorit Merhof

Prototype-based reconstruction methods for unsupervised anomaly detection utilize a limited set of learnable prototypes which only aggregates insufficient normal information, resulting in undesirable reconstruction. However, increasing the…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Ziqing Zhou , Yurui Pan , Lidong Wang , Wenbing Zhu , Mingmin Chi , Dong Wu , Bo Peng

Anomaly detection is a critical requirement for ensuring safety in autonomous driving. In this work, we leverage Cooperative Perception to share information across nearby vehicles, enabling more accurate identification and consensus of…

Multiagent Systems · Computer Science 2025-01-30 Ashish Bastola , Hao Wang , Abolfazl Razi

Anomaly detection in medical images is a challenging task, since anomalies are not typically available during training. Recent methods leverage a single pretext task coupled with a large-scale pre-trained model to reach state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2026-05-08 Bogdan Alexandru Bercean , Florinel Alin Croitoru , Vlad Hondru , Ciprian Mihai Ceausescu , Andreea Iuliana Ionescu , Radu Tudor Ionescu

Video anomaly detection (VAD) aims to detect anomalies that deviate from what is expected. In open-world scenarios, the expected events may change as requirements change. For example, not wearing a mask may be considered abnormal during a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-04 Zihao Liu , Xiaoyu Wu , Jianqin Wu , Xuxu Wang , Linlin Yang

Video Anomaly Detection (VAD) is an essential yet challenging task in signal processing. Since certain anomalies cannot be detected by isolated analysis of either temporal or spatial information, the interaction between these two types of…

Computer Vision and Pattern Recognition · Computer Science 2023-07-07 Zhiyuan Ning , Zhangxun Li , Zhengliang Guo , Zile Wang , Liang Song

Recent deep learning-based multi-view people detection (MVD) methods have shown promising results on existing datasets. However, current methods are mainly trained and evaluated on small, single scenes with a limited number of multi-view…

Computer Vision and Pattern Recognition · Computer Science 2024-05-31 Qi Zhang , Yunfei Gong , Daijie Chen , Antoni B. Chan , Hui Huang

Multi-view anomaly detection aims to identify surface defects on complex objects using observations captured from multiple viewpoints. However, existing unsupervised methods often suffer from feature inconsistency arising from viewpoint…

Computer Vision and Pattern Recognition · Computer Science 2026-04-08 Letian Bai , Chengyu Tao , Juan Du

Over recent decades have witnessed considerable progress in whether multi-task learning or multi-view learning, but the situation that consider both learning scenes simultaneously has received not too much attention. How to utilize multiple…

Computer Vision and Pattern Recognition · Computer Science 2022-01-19 Run-kun Lu , Jian-wei Liu , Si-ming Lian , Xin Zuo

Weakly supervised video anomaly detection (WS-VAD) involves identifying the temporal intervals that contain anomalous events in untrimmed videos, where only video-level annotations are provided as supervisory signals. However, a key…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Yu Wang , Shengjie Zhao

Learning visual semantic similarity is a critical challenge in bridging the gap between images and texts. However, there exist inherent variations between vision and language data, such as information density, i.e., images can contain…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Yang Liu , Mengyuan Liu , Shudong Huang , Jiancheng Lv

The development of unsupervised Video Anomaly Detection (VAD) relies on technologies in the field of signal processing. Since the anomaly is quite ambiguous and unbounded, different detection demands may often be raised even in one…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Kai Cheng , Xinzhe Li , Lijuan Che

Attention-based learning for fine-grained image recognition remains a challenging task, where most of the existing methods treat each object part in isolation, while neglecting the correlations among them. In addition, the multi-stage or…

Computer Vision and Pattern Recognition · Computer Science 2018-06-15 Ming Sun , Yuchen Yuan , Feng Zhou , Errui Ding
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