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Automated breast tumor segmentation on the basis of dynamic contrast-enhancement magnetic resonance imaging (DCE-MRI) has shown great promise in clinical practice, particularly for identifying the presence of breast disease. However,…

Image and Video Processing · Electrical Eng. & Systems 2024-08-13 Lei Zhou , Yuzhong Zhang , Jiadong Zhang , Xuejun Qian , Chen Gong , Kun Sun , Zhongxiang Ding , Xing Wang , Zhenhui Li , Zaiyi Liu , Dinggang Shen

Radio continuum surveys of the Galactic plane can find and characterize HII regions, supernova remnants (SNRs), planetary nebulae (PNe), and extragalactic sources. A number of surveys at high angular resolution (<25") at different…

Radio sources with steep and ultra-steep spectra, identified through a series of surveys of the Cold experiment using the RATAN-600 radio telescope, formed the basis of the Big Trio program aimed at discovering distant radio galaxies. With…

Cosmology and Nongalactic Astrophysics · Physics 2025-12-02 Olga Zhelenkova , Adelina Temirova , Yurij Parijskij , Natalia Soboleva

Recently, the end-to-end approach that learns hierarchical representations from raw data using deep convolutional neural networks has been successfully explored in the image, text and speech domains. This approach was applied to musical…

Sound · Computer Science 2017-05-23 Jongpil Lee , Jiyoung Park , Keunhyoung Luke Kim , Juhan Nam

More than half of the sources identified by recent radio sky surveys have not been detected by wide-field optical surveys. We present a study based on our co-added image stacking technique, in which our aim is to detect the optical emission…

Cosmology and Nongalactic Astrophysics · Physics 2012-09-28 József Varga , István Csabai , László Dobos

In the era of large photometric surveys, the importance of automated and accurate classification is rapidly increasing. Specifically, the separation of resolved and unresolved sources in astronomical imaging is a critical initial step for a…

Instrumentation and Methods for Astrophysics · Physics 2019-02-07 Yutaro Tachibana , A. A. Miller

We present DECORAS, a deep learning based approach to detect both point and extended sources from Very Long Baseline Interferometry (VLBI) observations. Our approach is based on an encoder-decoder neural network architecture that uses a low…

Instrumentation and Methods for Astrophysics · Physics 2022-07-25 S. Rezaei , J. P. McKean , M. Biehl , A. Javadpour

We describe a method of plotting continuous spectra for radio sources on the basis of entries of various source catalogues in comparatively large error boxes around a given sky position. Sources from the UTR-2 catalogue (Braude et al.,…

Astrophysics · Physics 2009-09-25 O. V. Verkhodanov , H. Andernach , N. V. Verkhodanova

Segmenting clouds in high-resolution satellite images is an arduous and challenging task due to the many types of geographies and clouds a satellite can capture. Therefore, it needs to be automated and optimized, specially for those who…

Computer Vision and Pattern Recognition · Computer Science 2019-11-19 Giorgio Morales , Alejandro Ramírez , Joel Telles

Morphologically classifying radio sources in continuum images with the SKA has the potential to address some of the key questions in cosmology and galaxy evolution. In particular, we may use different classes of radio sources as independent…

Instrumentation and Methods for Astrophysics · Physics 2014-12-19 Sphesihle Makhathini , Oleg Smirnov , Matt Jarvis , Ian Heywood

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

Currently available star cluster catalogues from HST imaging of nearby galaxies heavily rely on visual inspection and classification of candidate clusters. The time-consuming nature of this process has limited the production of reliable…

This paper investigates deep neural networks for radio signal classification. Instead of performing modulation recognition and combining it with further analysis methods, the classifier operates directly on the IQ data of the signals and…

Signal Processing · Electrical Eng. & Systems 2019-06-12 Stefan Scholl

Finding and classifying astronomical sources is key in the scientific exploitation of radio surveys. Source-finding usually involves identifying the parts of an image belonging to an astronomical source, against some estimated background.…

Instrumentation and Methods for Astrophysics · Physics 2019-12-20 V. Lukic , F. De Gasperin , M. Brüggen

We present optical and near-infrared imaging covering a $\sim$1.53 deg$^2$ region in the Super-Cluster Assisted Shear Survey (SuperCLASS) field, which aims to make the first robust weak lensing measurement at radio wavelengths. We derive…

Deep learning techniques have achieved specific results in recording device source identification. The recording device source features include spatial information and certain temporal information. However, most recording device source…

Sound · Computer Science 2022-12-06 Chunyan Zeng , Dongliang Zhu , Zhifeng Wang , Minghu Wu , Wei Xiong , Nan Zhao

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

We present the results of a proof-of-concept experiment which demonstrates that deep learning can successfully be used for production-scale classification of compact star clusters detected in HST UV-optical imaging of nearby spiral galaxies…

We report on high-resolution JVLA and Chandra observations of the HST Frontier Cluster MACS J0717.5+3745. MACS J0717.5+3745 offers the largest contiguous magnified area of any known cluster, making it a promising target to search for lensed…

We present source detection and catalogue construction pipelines to build the first catalogue of radio galaxies from the 270 $\rm deg^2$ pilot survey of the Evolutionary Map of the Universe (EMU-PS) conducted with the Australian Square…