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Semi-supervised anomaly detection methods leverage a few anomaly examples to yield drastically improved performance compared to unsupervised models. However, they still suffer from two limitations: 1) unlabeled anomalies (i.e., anomaly…

机器学习 · 计算机科学 2023-07-26 Hongzuo Xu , Yijie Wang , Guansong Pang , Songlei Jian , Ning Liu , Yongjun Wang

A novel semi-supervised learning technique is introduced based on a simple iterative learning cycle together with learned thresholding techniques and an ensemble decision support system. State-of-the-art model performance and increased…

计算机视觉与模式识别 · 计算机科学 2019-06-10 Robert Dupre , Jiri Fajtl , Vasileios Argyriou , Paolo Remagnin

Developing an effective automatic classifier to separate genuine sources from artifacts is essential for transient follow-ups in wide-field optical surveys. The identification of transient detections from the subtraction artifacts after the…

In the era of huge astronomical surveys, machine learning offers promising solutions for the efficient estimation of galaxy properties. The traditional, `supervised' paradigm for the application of machine learning involves training a model…

星系天体物理 · 物理学 2022-12-21 A. Humphrey , P. A. C. Cunha , A. Paulino-Afonso , S. Amarantidis , R. Carvajal , J. M. Gomes , I. Matute , P. Papaderos

This study focuses on transforming galaxy images between astronomical surveys, specifically enhancing images from the Sloan Digital Sky Survey (SDSS) and the Dark Energy Camera Legacy Survey (DECaLS) to achieve quality comparable to the…

天体物理仪器与方法 · 物理学 2025-01-27 Zhijian Luo , Shaohua Zhang , Jianzhen Chen , Zhu Chen , Liping Fu , Hubing Xiao , Wei Du , Chenggang Shu

Deep learning has had remarkable success at analyzing handheld imagery such as consumer photos due to the availability of large-scale human annotations (e.g., ImageNet). However, remote sensing data lacks such extensive annotation and thus…

计算机视觉与模式识别 · 计算机科学 2023-12-27 Chun-Hsiao Yeh , Xudong Wang , Stella X. Yu , Charles Hill , Zackery Steck , Scott Kangas , Aaron Reite

We present a Deep-Learning (DL) pipeline developed for the detection and characterization of astronomical sources within simulated Atacama Large Millimeter/submillimeter Array (ALMA) data cubes. The pipeline is composed of six DL models: a…

天体物理仪器与方法 · 物理学 2022-11-22 Michele Delli Veneri , Lukasz Tychoniec , Fabrizia Guglielmetti , Giuseppe Longo , Eric Villard

In this work, we introduce LEAD, an approach to discover landmarks from an unannotated collection of category-specific images. Existing works in self-supervised landmark detection are based on learning dense (pixel-level) feature…

计算机视觉与模式识别 · 计算机科学 2022-04-07 Tejan Karmali , Abhinav Atrishi , Sai Sree Harsha , Susmit Agrawal , Varun Jampani , R. Venkatesh Babu

Observational astronomy has undergone a significant transformation driven by large-scale surveys, such as the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS) Survey, the Sloan Digital Sky Survey (SDSS), and the Gaia…

天体物理仪器与方法 · 物理学 2025-08-14 Bradley D. Hutchinson , Catherine A. Pilachowski , Christian I. Johnson

We have developed a method that maps large astronomical images onto a two-dimensional map and clusters them. A combination of various state-of-the-art machine learning (ML) algorithms is used to develop a fully unsupervised image quality…

天体物理仪器与方法 · 物理学 2021-04-28 Hossen Teimoorinia , Sara Shishehchi , Ahnaf Tazwar , Ping Lin , Finn Archinuk , Stephen D. J. Gwyn , J. J. Kavelaars

In this paper, we introduce a unique variant of the denoising Auto-Encoder and combine it with the perceptual loss to classify images in an unsupervised manner. The proposed method, called Pseudo Labelling, consists of first applying a…

计算机视觉与模式识别 · 计算机科学 2021-06-01 Aymene Mohammed Bouayed , Karim Atif , Rachid Deriche , Abdelhakim Saim

In the 21st-century information age, with the development of big data technology, effectively extracting valuable information from massive data has become a key issue. Traditional data mining methods are inadequate when faced with…

计算机视觉与模式识别 · 计算机科学 2024-11-28 Aoran Shen , Minghao Dai , Jiacheng Hu , Yingbin Liang , Shiru Wang , Junliang Du

Detecting and evaluating surface coating defects is important for marine vessel maintenance. Currently, the assessment is carried out manually by qualified inspectors using international standards and their own experience. Automating the…

计算机视觉与模式识别 · 计算机科学 2022-03-21 Li Yu , Kareem Metwaly , James Z. Wang , Vishal Monga

Compared to supervised learning, semi-supervised learning reduces the dependence of deep learning on a large number of labeled samples. In this work, we use a small number of labeled samples and perform data augmentation on unlabeled…

机器学习 · 计算机科学 2020-01-14 Qiuyu Zhu , Tiantian Li

Scanning electron microscopy (SEM) is indispensable in diverse applications ranging from microelectronics to food processing because it provides large depth-of-field images with a resolution beyond the optical diffraction limit. However,…

The ability to understand visual information from limited labeled data is an important aspect of machine learning. While image-level classification has been extensively studied in a semi-supervised setting, dense pixel-level classification…

计算机视觉与模式识别 · 计算机科学 2019-08-19 Sudhanshu Mittal , Maxim Tatarchenko , Thomas Brox

Robust measurements of cosmological parameters from galaxy surveys rely on our understanding of systematic effects that impact the observed galaxy density field. In this paper we present, validate, and implement the idea of adopting the…

宇宙学与河外天体物理 · 物理学 2020-05-20 Mehdi Rezaie , Hee-Jong Seo , Ashley J. Ross , Razvan C. Bunescu

Studies have proved that the number of B-lines in lung ultrasound images has a strong statistical link to the amount of extravascular lung water, which is significant for hemodialysis treatment. Manual inspection of B-lines requires experts…

图像与视频处理 · 电气工程与系统科学 2023-03-24 Tianqi Yang , Nantheera Anantrasirichai , Oktay Karakuş , Marco Allinovi , Alin Achim

Pixel-level annotation is expensive and time-consuming. Semi-supervised segmentation methods address this challenge by learning models on few labeled images alongside a large corpus of unlabeled images. Although foundation models could…

计算机视觉与模式识别 · 计算机科学 2025-07-15 Ivan Martinović , Josip Šarić , Marin Oršić , Matej Kristan , Siniša Šegvić

In image denoising problems, the increasing density of available images makes an exhaustive visual inspection impossible and therefore automated methods based on machine-learning must be deployed for this purpose. This is particulary the…

机器学习 · 统计学 2022-01-21 Mathieu Chambefort , Raphaël Butez , Emilie Chautru , Stephan Clémençon