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Video Anomaly Detection (VAD) finds widespread applications in security surveillance, traffic monitoring, industrial monitoring, and healthcare. Despite extensive research efforts, there remains a lack of concise reviews that provide…

Computer Vision and Pattern Recognition · Computer Science 2024-11-01 Liyun Zhu , Lei Wang , Arjun Raj , Tom Gedeon , Chen Chen

Dataset distillation has emerged as a strategy to compress real-world datasets for efficient training. However, it struggles with large-scale and high-resolution datasets, limiting its practicality. This paper introduces a novel…

Computer Vision and Pattern Recognition · Computer Science 2025-01-14 Youbing Hu , Yun Cheng , Olga Saukh , Firat Ozdemir , Anqi Lu , Zhiqiang Cao , Zhijun Li

Existing industrial anomaly detection methods primarily concentrate on unsupervised learning with pristine RGB images. Yet, both RGB and 3D data are crucial for anomaly detection, and the datasets are seldom completely clean in practical…

Computer Vision and Pattern Recognition · Computer Science 2024-06-05 Chengjie Wang , Haokun Zhu , Jinlong Peng , Yue Wang , Ran Yi , Yunsheng Wu , Lizhuang Ma , Jiangning Zhang

Industrial anomaly detection for 2D objects has gained significant attention and achieved progress in anomaly detection (AD) methods. However, identifying 3D depth anomalies using only 2D information is insufficient. Despite explicitly…

Computer Vision and Pattern Recognition · Computer Science 2025-07-28 An Xiang , Zixuan Huang , Xitong Gao , Kejiang Ye , Cheng-zhong Xu

Visual anomaly detection is essential and commonly used for many tasks in the field of computer vision. Recent anomaly detection datasets mainly focus on industrial automated inspection, medical image analysis and video surveillance. In…

Computer Vision and Pattern Recognition · Computer Science 2024-01-15 Jian Zhang , Runwei Ding , Miaoju Ban , Ge Yang

Despite substantial progress in 3D object detection, advanced 3D detectors often suffer from heavy computation overheads. To this end, we explore the potential of knowledge distillation (KD) for developing efficient 3D object detectors,…

Computer Vision and Pattern Recognition · Computer Science 2022-10-17 Jihan Yang , Shaoshuai Shi , Runyu Ding , Zhe Wang , Xiaojuan Qi

Anomaly detection (AD) plays an important role in numerous applications. We focus on two understudied aspects of AD that are critical for integration into real-world applications. First, most AD methods cannot incorporate labeled data that…

Machine Learning · Computer Science 2023-06-06 Chun-Hao Chang , Jinsung Yoon , Sercan Arik , Madeleine Udell , Tomas Pfister

Unsupervised anomaly detection using deep learning has garnered significant research attention due to its broad applicability, particularly in medical imaging where labeled anomalous data are scarce. While earlier approaches leverage…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Chunlei Li , Yilei Shi , Jingliang Hu , Xiao Xiang Zhu , Lichao Mou

Although the diffusion model has achieved remarkable performance in the field of image generation, its high inference delay hinders its wide application in edge devices with scarce computing resources. Therefore, many training-free sampling…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Weilun Feng , Chuanguang Yang , Zhulin An , Libo Huang , Boyu Diao , Fei Wang , Yongjun Xu

Anomaly detection (AD) plays a pivotal role in multimedia applications for detecting defective products and automating quality inspection. Deep learning (DL) models typically require large-scale annotated data, which are often highly…

Computer Vision and Pattern Recognition · Computer Science 2024-10-22 Eirini Cholopoulou , Dimitris K. Iakovidis

Anomaly detection is a critical task in industrial manufacturing, aiming to identify defective parts of products. Most industrial anomaly detection methods assume the availability of sufficient normal data for training. This assumption may…

Computer Vision and Pattern Recognition · Computer Science 2024-08-06 Zhenyu Yan , Qingqing Fang , Wenxi Lv , Qinliang Su

Knowledge Distillation (KD) has been used in image classification for model compression. However, rare studies apply this technology on single-stage object detectors. Focal loss shows that the accumulated errors of easily-classified samples…

Computer Vision and Pattern Recognition · Computer Science 2019-01-15 Shitao Tang , Litong Feng , Wenqi Shao , Zhanghui Kuang , Wei Zhang , Yimin Chen

In this paper, we propose the LiDAR Distillation to bridge the domain gap induced by different LiDAR beams for 3D object detection. In many real-world applications, the LiDAR points used by mass-produced robots and vehicles usually have…

Computer Vision and Pattern Recognition · Computer Science 2022-08-16 Yi Wei , Zibu Wei , Yongming Rao , Jiaxin Li , Jie Zhou , Jiwen Lu

Unsupervised representation learning has proved to be a critical component of anomaly detection/localization in images. The challenges to learn such a representation are two-fold. Firstly, the sample size is not often large enough to learn…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Mohammadreza Salehi , Niousha Sadjadi , Soroosh Baselizadeh , Mohammad Hossein Rohban , Hamid R. Rabiee

Video anomaly detection aims to develop automated models capable of identifying abnormal events in surveillance videos. The benchmark setup for this task is extremely challenging due to: i) the limited size of the training sets, ii) weak…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Jash Dalvi , Ali Dabouei , Gunjan Dhanuka , Min Xu

In instance-level detection tasks (e.g., object detection), reducing input resolution is an easy option to improve runtime efficiency. However, this option traditionally hurts the detection performance much. This paper focuses on boosting…

Computer Vision and Pattern Recognition · Computer Science 2021-09-16 Lu Qi , Jason Kuen , Jiuxiang Gu , Zhe Lin , Yi Wang , Yukang Chen , Yanwei Li , Jiaya Jia

Recent advancements in camera-based 3D object detection have introduced cross-modal knowledge distillation to bridge the performance gap with LiDAR 3D detectors, leveraging the precise geometric information in LiDAR point clouds. However,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-16 Sanmin Kim , Youngseok Kim , Sihwan Hwang , Hyeonjun Jeong , Dongsuk Kum

Anomaly detection, which is a critical and popular topic in computer vision, aims to detect anomalous samples that are different from the normal (i.e., non-anomalous) ones. The current mainstream methods focus on anomaly detection for…

Computer Vision and Pattern Recognition · Computer Science 2023-05-10 Jianjian Qin , Chunzhi Gu , Jun Yu , Chao Zhang

3D Anomaly Detection (AD) has shown great potential in detecting anomalies or defects of high-precision industrial products. However, existing methods are typically trained in a class-specific manner and also lack the capability of learning…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Haoquan Lu , Hanzhe Liang , Jie Zhang , Chenxi Hu , Jinbao Wang , Can Gao

We introduce Dynamic Distinction Learning (DDL) for Video Anomaly Detection, a novel video anomaly detection methodology that combines pseudo-anomalies, dynamic anomaly weighting, and a distinction loss function to improve detection…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Demetris Lappas , Vasileios Argyriou , Dimitrios Makris