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Anomaly detection is a challenging task that frequently arises in practically all areas of industry and science, from fraud detection and data quality monitoring to finding rare cases of diseases and searching for new physics. Most of the…

Machine Learning · Computer Science 2021-11-22 Artem Ryzhikov , Maxim Borisyak , Andrey Ustyuzhanin , Denis Derkach

Despite excellent progress has been made, the performance of deep learning based algorithms still heavily rely on specific datasets, which are difficult to extend due to labor-intensive labeling. Moreover, because of the advancement of new…

Computer Vision and Pattern Recognition · Computer Science 2021-04-20 Zhen Wei , Bingkun Liu , Weinong Wang , Yu-Wing Tai

Few-shot anomaly detection methods can effectively address data collecting difficulty in industrial scenarios. Compared to 2D few-shot anomaly detection (2D-FSAD), 3D few-shot anomaly detection (3D-FSAD) is still an unexplored but essential…

Computer Vision and Pattern Recognition · Computer Science 2024-06-28 Zuo Zuo , Jiahao Dong , Yao Wu , Yanyun Qu , Zongze Wu

In the object detection task, CNN (Convolutional neural networks) models always need a large amount of annotated examples in the training process. To reduce the dependency of expensive annotations, few-shot object detection has become an…

Computer Vision and Pattern Recognition · Computer Science 2021-01-01 Yuewen Li , Wenquan Feng , Shuchang Lyu , Qi Zhao , Xuliang Li

This paper presents a novel anomaly detection methodology termed Statistical Aggregated Anomaly Detection (SAAD). The SAAD approach integrates advanced statistical techniques with machine learning, and its efficacy is demonstrated through…

Machine Learning · Computer Science 2024-06-14 Dacian Goina , Eduard Hogea , George Maties

Few-shot image generation (FSIG) aims to learn to generate new and diverse samples given an extremely limited number of samples from a domain, e.g., 10 training samples. Recent work has addressed the problem using transfer learning…

Computer Vision and Pattern Recognition · Computer Science 2023-05-10 Yunqing Zhao , Keshigeyan Chandrasegaran , Milad Abdollahzadeh , Ngai-Man Cheung

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

Video Anomaly Detection (VAD) plays a crucial role in modern surveillance systems, aiming to identify various anomalies in real-world situations. However, current benchmark datasets predominantly emphasize simple, single-frame anomalies…

Computer Vision and Pattern Recognition · Computer Science 2023-10-04 Yoav Arad , Michael Werman

Few-shot object detection (FSOD) is challenging due to unstable optimization and limited generalization arising from the scarcity of training samples. To address these issues, we propose a hybrid ensemble decoder that enhances…

Computer Vision and Pattern Recognition · Computer Science 2026-03-31 Xuanlong Yu , Youyang Sha , Longfei Liu , Xi Shen , Di Yang

There have been significant advancements in anomaly detection in an unsupervised manner, where only normal images are available for training. Several recent methods aim to detect anomalies based on a memory, comparing or reconstructing the…

Computer Vision and Pattern Recognition · Computer Science 2024-07-25 Joo Chan Lee , Taejune Kim , Eunbyung Park , Simon S. Woo , Jong Hwan Ko

Semi-supervised anomaly detection (AD) has shown great promise by effectively leveraging limited labeled data. However, existing methods are typically structured around scoring individual points or simple pairs. Such {point- or…

Machine Learning · Computer Science 2025-12-10 Jianling Gao , Chongyang Tao , Xuelian Lin , Junfeng Liu , Shuai Ma

Few-shot classification aims to recognize novel categories with only few labeled images in each class. Existing metric-based few-shot classification algorithms predict categories by comparing the feature embeddings of query images with…

Computer Vision and Pattern Recognition · Computer Science 2020-03-10 Hung-Yu Tseng , Hsin-Ying Lee , Jia-Bin Huang , Ming-Hsuan Yang

Few-shot learning aims to generalize to novel classes with only a few samples with class labels. Research in few-shot learning has borrowed techniques from transfer learning, metric learning, meta-learning, and Bayesian methods. These…

Computer Vision and Pattern Recognition · Computer Science 2021-11-02 Jaya Krishna Mandivarapu , Eric bunch , Glenn fung

Few-shot multispectral object detection (FSMOD) addresses the challenge of detecting objects across visible and thermal modalities with minimal annotated data. In this paper, we explore this complex task and introduce a framework named…

Computer Vision and Pattern Recognition · Computer Science 2025-09-26 Manuel Nkegoum , Minh-Tan Pham , Élisa Fromont , Bruno Avignon , Sébastien Lefèvre

In this paper, we are interested in the few-shot learning problem. In particular, we focus on a challenging scenario where the number of categories is large and the number of examples per novel category is very limited, e.g. 1, 2, or 3.…

Computer Vision and Pattern Recognition · Computer Science 2017-11-28 Siyuan Qiao , Chenxi Liu , Wei Shen , Alan Yuille

Retrieving rare and safety-critical driving scenarios from large-scale datasets is essential for building robust autonomous driving (AD) systems. As dataset sizes continue to grow, the key challenge shifts from collecting more data to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Felix Embacher , Jonas Uhrig , Marius Cordts , Markus Enzweiler

Few-shot semantic segmentation aims to segment novel-class objects in a given query image with only a few labeled support images. Most advanced solutions exploit a metric learning framework that performs segmentation through matching each…

Computer Vision and Pattern Recognition · Computer Science 2023-01-18 Jiacheng Chen , Bin-Bin Gao , Zongqing Lu , Jing-Hao Xue , Chengjie Wang , Qingmin Liao

Few-shot object detection (FSOD) aims to expand an object detector for novel categories given only a few instances for training. The few training samples restrict the performance of FSOD model. Recent text-to-image generation models have…

Computer Vision and Pattern Recognition · Computer Science 2023-05-15 Shaobo Lin , Kun Wang , Xingyu Zeng , Rui Zhao

Image-based inspection systems have been widely deployed in manufacturing production lines. Due to the scarcity of defective samples, unsupervised anomaly detection that only leverages normal samples during training to detect various…

Image and Video Processing · Electrical Eng. & Systems 2024-11-22 Chengyu Tao , Hao Xu , Juan Du

Emerging interests have been brought to recognize previously unseen objects given very few training examples, known as few-shot object detection (FSOD). Recent researches demonstrate that good feature embedding is the key to reach favorable…

Computer Vision and Pattern Recognition · Computer Science 2021-03-16 Bo Sun , Banghuai Li , Shengcai Cai , Ye Yuan , Chi Zhang