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Seam carving is a computational method capable of resizing images for both reduction and expansion based on its content, instead of the image geometry. Although the technique is mostly employed to deal with redundant information, i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2022-03-08 Thierry P. Moreira , Marcos Cleison S. Santana , Leandro A. Passos João Paulo Papa , Kelton Augusto P. da Costa

Video anomaly detection is a challenging task not only because it involves solving many sub-tasks such as motion representation, object localization and action recognition, but also because it is commonly considered as an unsupervised…

Computer Vision and Pattern Recognition · Computer Science 2020-12-04 Yuqi Ouyang , Victor Sanchez

Anomalies represent deviations from the intended system operation and can lead to decreased efficiency as well as partial or complete system failure. As the causes of anomalies are often unknown due to complex system dynamics, efficient…

Machine Learning · Computer Science 2021-08-31 Benjamin Lindemann , Benjamin Maschler , Nada Sahlab , Michael Weyrich

While machine learning approaches to image restoration offer great promise, current methods risk training models fixated on performing well only for image corruption of a particular level of difficulty---such as a certain level of noise or…

Computer Vision and Pattern Recognition · Computer Science 2017-08-03 Ruohan Gao , Kristen Grauman

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

Anomaly detection (AD) tasks have been solved using machine learning algorithms in various domains and applications. The great majority of these algorithms use normal data to train a residual-based model and assign anomaly scores to unseen…

Machine Learning · Computer Science 2024-02-01 Markus Ulmer , Jannik Zgraggen , Lilach Goren Huber

Deep learning has now become the de facto approach to the recognition of anomalies in medical imaging. Their 'black box' way of classifying medical images into anomaly labels poses problems for their acceptance, particularly with…

Computer Vision and Pattern Recognition · Computer Science 2020-08-04 Satyananda Kashyap , Alexandros Karargyris , Joy Wu , Yaniv Gur , Arjun Sharma , Ken C. L. Wong , Mehdi Moradi , Tanveer Syeda-Mahmood

Recently, large vision and language models have shown their success when adapting them to many downstream tasks. In this paper, we present a unified framework named CLIP-ADA for Anomaly Detection by Adapting a pre-trained CLIP model. To…

Computer Vision and Pattern Recognition · Computer Science 2024-03-15 Yuxuan Cai , Xinwei He , Dingkang Liang , Ao Tong , Xiang Bai

Many unsupervised visual anomaly detection methods train an auto-encoder to reconstruct normal samples and then leverage the reconstruction error map to detect and localize the anomalies. However, due to the powerful modeling and…

Computer Vision and Pattern Recognition · Computer Science 2024-12-18 Qingqing Fang , Qinliang Su , Wenxi Lv , Wenchao Xu , Jianxing Yu

We propose a one-class neural network (OC-NN) model to detect anomalies in complex data sets. OC-NN combines the ability of deep networks to extract a progressively rich representation of data with the one-class objective of creating a…

Machine Learning · Computer Science 2019-01-14 Raghavendra Chalapathy , Aditya Krishna Menon , Sanjay Chawla

Automated tumor detection in Digital Breast Tomosynthesis (DBT) is a difficult task due to natural tumor rarity, breast tissue variability, and high resolution. Given the scarcity of abnormal images and the abundance of normal images for…

Image and Video Processing · Electrical Eng. & Systems 2024-07-24 Nicholas Konz , Haoyu Dong , Maciej A. Mazurowski

Surface defect inspection based on machine vision is often affected by uneven illumination. In order to improve the inspection rate of surface defects inspection under uneven illumination condition, this paper proposes a method for…

Computer Vision and Pattern Recognition · Computer Science 2023-07-18 Hao Wu , Yulong Liu , Wenbin Gao , Xiangrong Xu

Machine learning offers potential solutions to current issues in industrial systems in areas such as quality control and predictive maintenance, but also faces unique barriers in industrial applications. An ongoing challenge is extreme…

Machine Learning · Computer Science 2026-01-15 Lesley Wheat , Martin v. Mohrenschildt , Saeid Habibi

Unsupervised anomaly detection (AD) is critical for a wide range of practical applications, from network security to health and medical tools. Due to the diversity of problems, no single algorithm has been found to be superior for all AD…

Machine Learning · Computer Science 2023-05-18 Małgorzata Gutowska , Suzanne Little , Andrew McCarren

In the realm of machine learning, the study of anomaly detection and localization within image data has gained substantial traction, particularly for practical applications such as industrial defect detection. While the majority of existing…

Computer Vision and Pattern Recognition · Computer Science 2023-05-02 Wenping Jin , Fei Guo , Li Zhu

Recent efforts towards video anomaly detection (VAD) try to learn a deep autoencoder to describe normal event patterns with small reconstruction errors. The video inputs with large reconstruction errors are regarded as anomalies at the test…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Yuandu Lai , Yahong Han , Yaowei Wang

Blur detection aims at segmenting the blurred areas of a given image. Recent deep learning-based methods approach this problem by learning an end-to-end mapping between the blurred input and a binary mask representing the localization of…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Aitor Alvarez-Gila , Adrian Galdran , Estibaliz Garrote , Joost van de Weijer

In this paper, we address the problem of class-generalizable anomaly detection, where the objective is to develop a unified model by focusing our learning on the available normal data and a small amount of anomaly data in order to detect…

Machine Learning · Computer Science 2026-01-28 Padmaksha Roy , Lamine Mili , Almuatazbellah Boker

Part-based image classification aims at representing categories by small sets of learned discriminative parts, upon which an image representation is built. Considered as a promising avenue a decade ago, this direction has been neglected…

Computer Vision and Pattern Recognition · Computer Science 2017-04-13 Ronan Sicre , Yannis Avrithis , Ewa Kijak , Frederic Jurie

The machine learning community has been overwhelmed by a plethora of deep learning based approaches. Many challenging computer vision tasks such as detection, localization, recognition and segmentation of objects in unconstrained…

Computer Vision and Pattern Recognition · Computer Science 2019-07-16 Swarnendu Ghosh , Nibaran Das , Ishita Das , Ujjwal Maulik