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Analyzing medical data to find abnormalities is a time-consuming and costly task, particularly for rare abnormalities, requiring tremendous efforts from medical experts. Artificial intelligence has become a popular tool for the automatic…

Object recognition and object pose estimation in robotic grasping continue to be significant challenges, since building a labelled dataset can be time consuming and financially costly in terms of data collection and annotation. In this…

Computer Vision and Pattern Recognition · Computer Science 2024-01-25 Dongmyoung Lee , Wei Chen , Nicolas Rojas

Despite the notable accomplishments of deep object detection models, a major challenge that persists is the requirement for extensive amounts of training data. The process of procuring such real-world data is a laborious undertaking, which…

Computer Vision and Pattern Recognition · Computer Science 2023-06-19 Roy Voetman , Maya Aghaei , Klaas Dijkstra

In industry, defect detection is crucial for quality control. Non-destructive testing (NDT) methods are preferred as they do not influence the functionality of the object while inspecting. Automated data evaluation for automated defect…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Natascha Jeziorski , Petra Gospodnetić , Claudia Redenbach

Display front-of-screen (FOS) quality inspection is essential for the mass production of displays in the manufacturing process. However, the severe imbalanced data, especially the limited number of defect samples, has been a long-standing…

Machine Learning · Computer Science 2022-03-08 Shancong Mou , Meng Cao , Zhendong Hong , Ping Huang , Jiulong Shan , Jianjun Shi

Supervised classification methods have been widely utilized for the quality assurance of the advanced manufacturing process, such as additive manufacturing (AM) for anomaly (defects) detection. However, since abnormal states (with defects)…

Machine Learning · Computer Science 2022-11-29 Jihoon Chung , Bo Shen , Zhenyu , Kong

Visual anomaly detection (AD) presents significant challenges due to the scarcity of anomalous data samples. While numerous works have been proposed to synthesize anomalous samples, these synthetic anomalies often lack authenticity or…

Computer Vision and Pattern Recognition · Computer Science 2025-06-12 Han Sun , Yunkang Cao , Hao Dong , Olga Fink

Synthetic data generation has been widely adopted in software testing, data privacy, imbalanced learning, and artificial intelligence explanation. In all such contexts, it is crucial to generate plausible data samples. A common assumption…

Artificial Intelligence · Computer Science 2024-10-16 Martina Cinquini , Fosca Giannotti , Riccardo Guidotti

Class imbalance can often degrade predictive performance of supervised learning algorithms. Balanced classes can be obtained by oversampling exact copies, with noise, or interpolation between nearest neighbours (as in traditional SMOTE…

Machine Learning · Computer Science 2022-01-17 Emily Muller , Xu Zheng , Jer Hayes

Effectively addressing the challenge of industrial Anomaly Detection (AD) necessitates an ample supply of defective samples, a constraint often hindered by their scarcity in industrial contexts. This paper introduces a novel algorithm…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Hanxi Li , Zhengxun Zhang , Hao Chen , Lin Wu , Bo Li , Deyin Liu , Mingwen Wang

Collecting and annotating datasets for pixel-level semantic segmentation tasks are highly labor-intensive. Data augmentation provides a viable solution by enhancing model generalization without additional real-world data collection.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-20 Huy Che , Dinh-Duy Phan , Duc-Khai Lam

The usage of medical image data for the training of large-scale machine learning approaches is particularly challenging due to its scarce availability and the costly generation of data annotations, typically requiring the engagement of…

Computer Vision and Pattern Recognition · Computer Science 2024-06-26 Joshua Niemeijer , Jan Ehrhardt , Hristina Uzunova , Heinz Handels

Identifying anomalous instances in tabular data is essential for improving data reliability and maintaining system stability. Due to the scarcity of ground-truth anomaly labels, existing methods mainly rely on unsupervised anomaly detection…

Artificial Intelligence · Computer Science 2026-04-21 Wei Huang , Yuxuan Xiong , Hezhe Qiao , Yu-Ming Shang , Xiangling Fu , Guansong Pang

Quality control is a crucial activity performed by manufacturing companies to ensure their products conform to the requirements and specifications. The introduction of artificial intelligence models enables to automate the visual quality…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Jože M. Rožanec , Patrik Zajec , Spyros Theodoropoulos , Erik Koehorst , Blaž Fortuna , Dunja Mladenić

Graph anomaly detection (GAD) aims to identify anomalous graphs that significantly deviate from other ones, which has raised growing attention due to the broad existence and complexity of graph-structured data in many real-world scenarios.…

Machine Learning · Computer Science 2024-02-21 Jinyu Cai , Yunhe Zhang , Zhoumin Lu , Wenzhong Guo , See-kiong Ng

Defect segmentation is crucial for quality control in advanced manufacturing, yet data scarcity poses challenges for state-of-the-art supervised deep learning. Synthetic defect data generation is a popular approach for mitigating data…

Computer Vision and Pattern Recognition · Computer Science 2024-10-25 Shancong Mou , Raviteja Vemulapalli , Shiyu Li , Yuxuan Liu , C Thomas , Meng Cao , Haoping Bai , Oncel Tuzel , Ping Huang , Jiulong Shan , Jianjun Shi

This paper introduces a methodology for generating synthetic annotated data to address data scarcity in semantic segmentation tasks within the precision agriculture domain. Utilizing Denoising Diffusion Probabilistic Models (DDPMs) and…

Computer Vision and Pattern Recognition · Computer Science 2024-11-07 Andrew Heschl , Mauricio Murillo , Keyhan Najafian , Farhad Maleki

Anomaly detection in complex domains poses significant challenges due to the need for extensive labeled data and the inherently imbalanced nature of anomalous versus benign samples. Graph-based machine learning models have emerged as a…

Machine Learning · Computer Science 2025-07-21 Yifan Wei , Anwar Said , Waseem Abbas , Xenofon Koutsoukos

In this paper, we propose a novel method for irregularity detection. Previous researches solve this problem as a One-Class Classification (OCC) task where they train a reference model on all of the available samples. Then, they consider a…

Computer Vision and Pattern Recognition · Computer Science 2020-06-30 Masoud Pourreza , Bahram Mohammadi , Mostafa Khaki , Samir Bouindour , Hichem Snoussi , Mohammad Sabokrou

The development of continuous biomanufacturing processes requires robust and early anomaly detection, since even minor deviations can compromise yield and stability, leading to disruptions in scheduling, reduced weekly production, and…