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In the domain of anomaly detection, methods often excel in either high-level semantic or low-level industrial benchmarks, rarely achieving cross-domain proficiency. Semantic anomalies are novelties that differ in meaning from the training…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Luc P. J. Sträter , Mohammadreza Salehi , Efstratios Gavves , Cees G. M. Snoek , Yuki M. Asano

The performance of anomaly inspection in industrial manufacturing is constrained by the scarcity of anomaly data. To overcome this challenge, researchers have started employing anomaly generation approaches to augment the anomaly dataset.…

Computer Vision and Pattern Recognition · Computer Science 2025-04-30 Ying Jin , Jinlong Peng , Qingdong He , Teng Hu , Jiafu Wu , Hao Chen , Haoxuan Wang , Wenbing Zhu , Mingmin Chi , Jun Liu , Yabiao Wang

Unsupervised anomaly detection (UAD) seeks to localize the anomaly mask of an input image with respect to normal samples. Either by reconstructing normal counterparts (reconstruction-based) or by learning an image feature embedding space…

Image and Video Processing · Electrical Eng. & Systems 2025-10-06 Zhe Zhang , Mingxiu Cai , Hanxiao Wang , Gaochang Wu , Tianyou Chai , Xiatian Zhu

We propose an end-to-end pipeline for both building and tracking 3D facial models from personalized in-the-wild (cellphone, webcam, youtube clips, etc.) video data. First, we present a method for automatic data curation and retrieval based…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Winnie Lin , Yilin Zhu , Demi Guo , Ron Fedkiw

Medical image synthesis has become an essential strategy for augmenting datasets and improving model generalization in data-scarce clinical settings. However, fine-grained and controllable synthesis remains difficult due to limited…

Image and Video Processing · Electrical Eng. & Systems 2025-09-09 Shuhan Ding , Jingjing Fu , Yu Gu , Naiteek Sangani , Mu Wei , Paul Vozila , Nan Liu , Jiang Bian , Hoifung Poon

In this work we propose a one-class self-supervised method for anomaly segmentation in images that benefits both from a modern machine learning approach and a more classic statistical detection theory. The method consists of four phases.…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Matías Tailanian , Álvaro Pardo , Pablo Musé

One-class anomaly detection aims to detect objects that do not belong to a predefined normal class. In practice training data lack those anomalous samples; hence state-of-the-art methods are trained to discriminate between normal and…

Computer Vision and Pattern Recognition · Computer Science 2025-03-10 Romain Hermary , Vincent Gaudillière , Abd El Rahman Shabayek , Djamila Aouada

Detecting anomalies in fundus images through unsupervised methods is a challenging task due to the similarity between normal and abnormal tissues, as well as their indistinct boundaries. The current methods have limitations in accurately…

Computer Vision and Pattern Recognition · Computer Science 2023-12-29 Jingqi Niu , Qinji Yu , Shiwen Dong , Zilong Wang , Kang Dang , Xiaowei Ding

Few-shot industrial anomaly detection (FS-IAD) presents a critical challenge for practical automated inspection systems operating in data-scarce environments. While existing approaches predominantly focus on deriving prototypes from limited…

Computer Vision and Pattern Recognition · Computer Science 2025-06-27 Long Tian , Yufei Li , Yuyang Dai , Wenchao Chen , Xiyang Liu , Bo Chen

Aims. In astronomy, machine learning has been successful in various tasks such as source localisation, classification, anomaly detection, and segmentation. However, feature regression remains an area with room for improvement. We aim to…

Instrumentation and Methods for Astrophysics · Physics 2023-12-20 F. Stoppa , R. Ruiz de Austri , P. Vreeswijk , S. Bhattacharyya , S. Caron , S. Bloemen , G. Zaharijas , G. Principe , V. Vodeb , P. J. Groot , E. Cator , G. Nelemans

Point cloud anomaly detection is essential for various industrial applications. The huge computation and storage costs caused by the increasing product classes limit the application of single-class unsupervised methods, necessitating the…

Computer Vision and Pattern Recognition · Computer Science 2025-05-13 Yuqi Cheng , Yunkang Cao , Dongfang Wang , Weiming Shen , Wenlong Li

Detecting anomalies in traffic scenes is crucial for ensuring safety in autonomous driving, yet collecting representative anomalous data remains challenging. Existing anomaly detection methods are highly specialized and rely on normality as…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Albert Schotschneider , Daniel Bogdoll , Svetlana Pavlitska , Ahmed Abouelazm , Johann Marius Zoellner

Unsupervised anomaly detection (UAD) aims to identify image- and pixel-level anomalies using only normal training data, with wide applications such as industrial inspection and medical analysis, where anomalies are scarce due to privacy…

Computer Vision and Pattern Recognition · Computer Science 2025-10-09 Zhe Zhang , Mingxiu Cai , Gaochang Wu , Jing Zhang , Lingqiao Liu , Dacheng Tao , Tianyou Chai , Xiatian Zhu

Novelty detection in large scientific datasets faces two key challenges: the noisy and high-dimensional nature of experimental data, and the necessity of making statistically robust statements about any observed outliers. While there is a…

Anomaly detection from a single image is challenging since anomaly data is always rare and can be with highly unpredictable types. With only anomaly-free data available, most existing methods train an AutoEncoder to reconstruct the input…

Computer Vision and Pattern Recognition · Computer Science 2021-03-23 Yunfei Liu , Chaoqun Zhuang , Feng Lu

Characterizing quantum flakes is a critical step in quantum hardware engineering because the quality of these flakes directly influences qubit performance. Although computer vision methods for identifying two-dimensional quantum flakes have…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Hoang-Quan Nguyen , Xuan Bac Nguyen , Sankalp Pandey , Tim Faltermeier , Nicholas Borys , Hugh Churchill , Khoa Luu

Directed energy deposition (DED), a metal additive manufacturing process, is highly susceptible to process-induced defects such as geometric deviations, lack of fusion, and poor surface finish. This work presents a build-height-synchronized…

Optics · Physics 2026-01-14 Guanzhong Hu , Wenpan Li , Rujing Zha , Ping Guo

Quantum-inspired tensor networks algorithms have shown to be effective and efficient models for machine learning tasks, including anomaly detection. Here, we propose a highly parallelizable quantum-inspired approach which we call SMT-AD…

Machine Learning · Computer Science 2026-04-09 Apimuk Sornsaeng , Si Min Chan , Wenxuan Zhang , Swee Liang Wong , Joshua Lim , Dario Poletti

Manufacturing industries require efficient and voluminous production of high-quality finished goods. In the context of Industry 4.0, visual anomaly detection poses an optimistic solution for automatically controlled product quality with…

Computer Vision and Pattern Recognition · Computer Science 2023-11-06 Devang Mehta , Noah Klarmann

Anomaly detection in complex industrial processes plays a pivotal role in ensuring efficient, stable, and secure operation. Existing anomaly detection methods primarily focus on analyzing dominant anomalies using the process variables (such…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Gaochang Wu , Yapeng Zhang , Lan Deng , Jingxin Zhang , Tianyou Chai
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