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Current Zero-Shot Learning (ZSL) approaches are restricted to recognition of a single dominant unseen object category in a test image. We hypothesize that this setting is ill-suited for real-world applications where unseen objects appear…

Computer Vision and Pattern Recognition · Computer Science 2019-04-12 Shafin Rahman , Salman Khan , Fatih Porikli

Unsupervised Anomaly Detection has become a popular method to detect pathologies in medical images as it does not require supervision or labels for training. Most commonly, the anomaly detection model generates a "normal" version of an…

Image and Video Processing · Electrical Eng. & Systems 2023-09-26 Felix Meissen , Johannes Paetzold , Georgios Kaissis , Daniel Rueckert

Anomaly detection (AD) is a fundamental task in computer vision. It aims to identify incorrect image data patterns which deviate from the normal ones. Conventional methods generally address AD by preparing augmented negative samples to…

Computer Vision and Pattern Recognition · Computer Science 2023-12-01 Jianjian Qin , Chunzhi Gu , Jun Yu , Chao Zhang

Anomaly detection, the task of identifying unusual samples in data, often relies on a large set of training samples. In this work, we consider the setting of few-shot anomaly detection in images, where only a few images are given at…

Computer Vision and Pattern Recognition · Computer Science 2021-04-30 Shelly Sheynin , Sagie Benaim , Lior Wolf

One practical approach to infer 3D scene structure from a single image is to retrieve a closely matching 3D model from a database and align it with the object in the image. Existing methods rely on supervised training with images and pose…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Pattaramanee Arsomngern , Sasikarn Khwanmuang , Matthias Nießner , Supasorn Suwajanakorn

With the increase in the learning capability of deep convolution-based architectures, various applications of such models have been proposed over time. In the field of anomaly detection, improvements in deep learning opened new prospects of…

Computer Vision and Pattern Recognition · Computer Science 2021-05-25 Jin-Ha Lee , Marcella Astrid , Muhammad Zaigham Zaheer , Seung-Ik Lee

Anomaly detection consists in identifying, within a dataset, those samples that significantly differ from the majority of the data, representing the normal class. It has many practical applications, e.g. ranging from defective product…

Computer Vision and Pattern Recognition · Computer Science 2020-11-13 Pankaj Mishra , Claudio Piciarelli , Gian Luca Foresti

We propose the novel framework for anomaly detection in images. Our new framework, PNUNet, is based on many normal data and few anomalous data. We assume that some noises are added to the input images and learn to remove the noise. In…

Computer Vision and Pattern Recognition · Computer Science 2019-05-28 Masanari Kimura

Image anomaly detection is a popular research direction, with many methods emerging in recent years due to rapid advancements in computing. The use of artificial intelligence for image anomaly detection has been widely studied. By analyzing…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Qianhui Wan , Zecheng Zhang , Liheng Jiang , Zhaoqi Wang , Yan Zhou

The huge domain gap between sketches and photos and the highly abstract sketch representations pose challenges for sketch-based image retrieval (\underline{SBIR}). The zero-shot sketch-based image retrieval (\underline{ZS-SBIR}) is more…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Hao Ren , Ziqiang Zheng , Yang Wu , Hong Lu , Yang Yang , Ying Shan , Sai-Kit Yeung

We propose a learning-based method to recover normals, specularity, and roughness from a single diffuse image of a material, using microgeometry appearance as our primary cue. Previous methods that work on single images tend to produce…

Computer Vision and Pattern Recognition · Computer Science 2024-03-14 Carlos Rodriguez-Pardo , Henar Dominguez-Elvira , David Pascual-Hernandez , Elena Garces

It is hard to collect enough flaw images for training deep learning network in industrial production. Therefore, existing industrial anomaly detection methods prefer to use CNN-based unsupervised detection and localization network to…

Computer Vision and Pattern Recognition · Computer Science 2024-08-16 Jianfeng Huang , Chenyang Li , Yimin Lin , Shiguo Lian

Despite remarkable progress on visual recognition tasks, deep neural-nets still struggle to generalize well when training data is scarce or highly imbalanced, rendering them extremely vulnerable to real-world examples. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2022-06-22 Shiran Zada , Itay Benou , Michal Irani

We focus on a specific use case in anomaly detection where the distribution of normal samples is supported by a lower-dimensional manifold. Here, regularized autoencoders provide a popular approach by learning the identity mapping on the…

Computer Vision and Pattern Recognition · Computer Science 2024-05-14 Alexander Bauer , Shinichi Nakajima , Klaus-Robert Müller

Anomaly detection is a key goal of autonomous surveillance systems that should be able to alert unusual observations. In this paper, we propose a holistic anomaly detection system using deep neural networks for surveillance of critical…

Computer Vision and Pattern Recognition · Computer Science 2020-11-06 Ilker Bozcan , Erdal Kayacan

Visual anomaly detection has been widely used in industrial inspection and medical diagnosis. Existing methods typically demand substantial training samples, limiting their utility in zero-/few-shot scenarios. While recent efforts have…

Computer Vision and Pattern Recognition · Computer Science 2025-07-29 Qingqing Fang , Wenxi Lv , Qinliang Su

Anomaly detection based on 3D point cloud data is an important research problem and receives more and more attention recently. Untrained anomaly detection based on only one sample is an emerging research problem motivated by real…

Machine Learning · Computer Science 2025-07-29 Juan Du , Dongheng Chen

Anomaly detection is the problem of recognizing abnormal inputs based on the seen examples of normal data. Despite recent advances of deep learning in recognizing image anomalies, these methods still prove incapable of handling complex…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Nina Shvetsova , Bart Bakker , Irina Fedulova , Heinrich Schulz , Dmitry V. Dylov

Singular points of a fingerprint image are special locations having high curvature properties. They can play a pivotal role in fingerprint normalization and reliable feature extraction. Accurate and efficient extraction of a singular point…

Computer Vision and Pattern Recognition · Computer Science 2019-08-15 Geetika Arora , Ranjeet Ranjan Jha , Akash Agrawal , Kamlesh Tiwari , Aditya Nigam

Texture surface anomaly detection finds widespread applications in industrial settings. However, existing methods often necessitate gathering numerous samples for model training. Moreover, they predominantly operate within a close-set…

Computer Vision and Pattern Recognition · Computer Science 2024-06-12 Haiming Yao , Wei Luo , Yunkang Cao , Yiheng Zhang , Wenyong Yu , Weiming Shen