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We apply a new deep learning technique to detect, classify, and deblend sources in multi-band astronomical images. We train and evaluate the performance of an artificial neural network built on the Mask R-CNN image processing framework, a…

Instrumentation and Methods for Astrophysics · Physics 2019-11-22 Colin J. Burke , Patrick D. Aleo , Yu-Ching Chen , Xin Liu , John R. Peterson , Glenn H. Sembroski , Joshua Yao-Yu Lin

Clustering is a class of unsupervised learning methods that has been extensively applied and studied in computer vision. Little work has been done to adapt it to the end-to-end training of visual features on large scale datasets. In this…

Computer Vision and Pattern Recognition · Computer Science 2019-03-19 Mathilde Caron , Piotr Bojanowski , Armand Joulin , Matthijs Douze

Context. The accurate classification of hundreds of thousands of galaxies observed in modern deep surveys is imperative if we want to understand the universe and its evolution. Aims. Here, we report the use of machine learning techniques to…

Machine learning techniques have been successfully used to classify variable stars on widely-studied astronomical surveys. These datasets have been available to astronomers long enough, thus allowing them to perform deep analysis over…

Instrumentation and Methods for Astrophysics · Physics 2018-01-31 Patricio Benavente , Pavlos Protopapas , Karim Pichara

Breast cancer is one of the most serious types of cancer that can occur in women. The automatic diagnosis of breast cancer by analyzing histological images (HIs) is important for patients and their prognosis. The classification of HIs…

Image and Video Processing · Electrical Eng. & Systems 2022-08-02 Hayder A. Khikani , Naira Elazab , Ahmed Elgarayhi , Mohammed Elmogy , Mohammed Sallah

Modulation classification, recognized as the intermediate step between signal detection and demodulation, is widely deployed in several modern wireless communication systems. Although many approaches have been studied in the last decades…

Signal Processing · Electrical Eng. & Systems 2020-09-07 Van-Sang Doan , Thien Huynh-The , Cam-Hao Hua , Quoc-Viet Pham , Dong-Seong Kim

Deep learning has witnessed the extensive utilization across a wide spectrum of domains, including fine-grained few-shot learning (FGFSL) which heavily depends on deep backbones. Nonetheless, shallower deep backbones such as ConvNet-4, are…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Chaofei Qi , Chao Ye , Zhitai Liu , Weiyang Lin , Jianbin Qiu

We train deep learning models on thousands of galaxy catalogues from the state-of-the-art hydrodynamic simulations of the CAMELS project to perform regression and inference. We employ Graph Neural Networks (GNNs), architectures designed to…

Cosmology and Nongalactic Astrophysics · Physics 2023-02-10 Pablo Villanueva-Domingo , Francisco Villaescusa-Navarro

Lensing by galaxy clusters is a versatile probe of cosmology and extragalactic astrophysics, but the accuracy of some of its predictions is limited by the simplified models adopted to reduce the (otherwise untractable) number of degrees of…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-28 Pietro Bergamini , Adriano Agnello , Gabriel Bartosch Caminha

With the rapid development of deep learning technology and improvement in computing capability, deep learning has been widely used in the field of hyperspectral image (HSI) classification. In general, deep learning models often contain many…

Computer Vision and Pattern Recognition · Computer Science 2021-12-06 Sen Jia , Shuguo Jiang , Zhijie Lin , Nanying Li , Meng Xu , Shiqi Yu

The number density of galaxy clusters across mass and redshift has been established as a powerful cosmological probe. Cosmological analyses with galaxy clusters traditionally employ scaling relations. However, many challenges arise from…

Cosmology and Nongalactic Astrophysics · Physics 2025-01-08 M. Kosiba , N. Cerardi , M. Pierre , F. Lanusse , C. Garrel , N. Werner , M. Shalak

We present a method for automatic detection and classification of galaxies which includes a novel data-augmentation procedure to make trained models more robust against the data taken from different instruments and contrast-stretching…

Instrumentation and Methods for Astrophysics · Physics 2018-09-07 Roberto E. González , Roberto P. Muñoz , Cristian A. Hernández

We have developed a method for fast and accurate stellar population parameters determination in order to apply it to high resolution galaxy spectra. The method is based on an optimization technique that combines active learning with an…

Astrophysics · Physics 2010-11-11 Thamar Solorio , Olac Fuentes , Roberto Terlevich , Elena Terlevich

We present an application of Deep Learning for the image recognition of asteroid trails in single-exposure photos taken by the Hubble Space Telescope. Using algorithms based on multi-layered deep Convolutional Neural Networks, we report…

Instrumentation and Methods for Astrophysics · Physics 2020-11-02 Andrei A. Parfeni , Laurentiu I. Caramete , Andreea M. Dobre , Nguyen Tran Bach

Presently, deep learning and convolutional neural networks (CNNs) are widely used in the fields of image processing, image classification, object identification and many more. In this work, we implemented convolutional neural network based…

Computer Vision and Pattern Recognition · Computer Science 2024-11-13 Jai G Singla , Bakul Vaghela

The volume of data being collected in solar physics has exponentially increased over the past decade and with the introduction of the $\textit{Daniel K. Inouye Solar Telescope}$ (DKIST) we will be entering the age of petabyte solar data.…

Solar and Stellar Astrophysics · Physics 2019-07-10 John A. Armstrong , Lyndsay Fletcher

We present a classification of galaxies in the Pan-STARRS1 (PS1) 3$\pi$ survey based on their recent star formation history and morphology. Specifically, we train and test two Random Forest (RF) classifiers using photometric features…

High Energy Astrophysical Phenomena · Physics 2020-10-21 A. Baldeschi , A. Miller , M. Stroh , R. Margutti , D. L. Coppejans

Few-shot learning remains a challenging problem, with unsatisfactory 1-shot accuracies for most real-world data. Here, we present a different perspective for data distributions in the feature space of a deep network and show how to exploit…

Computer Vision and Pattern Recognition · Computer Science 2021-12-09 Joseph F Comer , Philip L Jacobson , Heiko Hoffmann

Efficient identification and follow-up of astronomical transients is hindered by the need for humans to manually select promising candidates from data streams that contain many false positives. These artefacts arise in the difference images…

Standard deep neural networks (DNNs) are commonly trained in an end-to-end fashion for specific tasks such as object recognition, face identification, or character recognition, among many examples. This specificity often leads to…

Computer Vision and Pattern Recognition · Computer Science 2020-07-14 Raphaël Achddou , J. Matias di Martino , Guillermo Sapiro
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