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As ground-based all-sky astronomical surveys will gather millions of images in the coming years, a critical requirement emerges for the development of fast deconvolution algorithms capable of efficiently improving the spatial resolution of…

Instrumentation and Methods for Astrophysics · Physics 2024-07-31 Utsav Akhaury , Pascale Jablonka , Jean-Luc Starck , Frédéric Courbin

We present a multi-modal foundation model for astrophysical galaxy data, designed to map between simulation- and observation-based galactic features. Our encoder-only transformer flexibly ingests scalar quantities (e.g., redshifts, galaxy…

Astrophysics of Galaxies · Physics 2025-10-10 Bin Xia , Nesar Ramachandra , Azton I. Wells , Salman Habib , John Wise

We present a novel usage of Transformers to make image classification interpretable. Unlike mainstream classifiers that wait until the last fully connected layer to incorporate class information to make predictions, we investigate a…

The accurate analysis of medical images is vital for diagnosing and predicting medical conditions. Traditional approaches relying on radiologists and clinicians suffer from inconsistencies and missed diagnoses. Computer-aided diagnosis…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Yulong Shisu , Susano Mingwin , Yongshuai Wanwag , Zengqiang Chenso , Sunshin Huing

We conduct a systematic robustness analysis of the hybrid machine learning framework \texttt{USmorph}, which integrates unsupervised and supervised learning for galaxy morphological classification. Although \texttt{USmorph} has already been…

Astrophysics of Galaxies · Physics 2025-12-19 Shiwei Zhu , Guanwen Fang , Yao Dai , Chichun Zhou , Yirui Zheng , Jie Song , Shiying Lu , Xu Kong

In this paper, we propose an encoder-decoder neural architecture (called Channelformer) to achieve improved channel estimation for orthogonal frequency-division multiplexing (OFDM) waveforms in downlink scenarios. The self-attention…

Signal Processing · Electrical Eng. & Systems 2023-02-10 Dianxin Luan , John Thompson

We implement a sample-efficient method for rapid and accurate emulation of semi-analytical galaxy formation models over a wide range of model outputs. We use ensembled deep learning algorithms to produce a fast emulator of an updated…

Astrophysics of Galaxies · Physics 2021-07-14 Edward J. Elliott , Carlton M. Baugh , Cedric G. Lacey

Classification of galaxy morphology is a challenging but meaningful task for the enormous amount of data produced by the next-generation telescope. By introducing the adaptive polar coordinate transformation, we develop a rotationally…

Astrophysics of Galaxies · Physics 2023-01-11 G. W. Fang , S. Ba , Y. Z. Gu , Z. S. Lin , Y. J. Hou , C. X. Qin , C. C. Zhou , J. Xu , Y. Dai , J. Song , X. Kong

We present a novel clustering objective that learns a neural network classifier from scratch, given only unlabelled data samples. The model discovers clusters that accurately match semantic classes, achieving state-of-the-art results in…

Computer Vision and Pattern Recognition · Computer Science 2019-08-23 Xu Ji , João F. Henriques , Andrea Vedaldi

Human fashion understanding is one crucial computer vision task since it has comprehensive information for real-world applications. This focus on joint human fashion segmentation and attribute recognition. Contrary to the previous works…

Computer Vision and Pattern Recognition · Computer Science 2022-07-12 Shilin Xu , Xiangtai Li , Jingbo Wang , Guangliang Cheng , Yunhai Tong , Dacheng Tao

Transformer architecture has emerged to be successful in a number of natural language processing tasks. However, its applications to medical vision remain largely unexplored. In this study, we present UTNet, a simple yet powerful hybrid…

Computer Vision and Pattern Recognition · Computer Science 2021-09-29 Yunhe Gao , Mu Zhou , Dimitris Metaxas

The introduction of new generation hyperspectral satellite sensors, combined with advancements in deep learning methodologies, has significantly enhanced the ability to discriminate detailed land-cover classes at medium-large scales.…

Computer Vision and Pattern Recognition · Computer Science 2025-10-10 Mattia Ferrari , Lorenzo Bruzzone

Within scientific and real life problems, classification is a typical case of extremely complex tasks in data-driven scenarios, especially if approached with traditional techniques. Machine Learning supervised and unsupervised paradigms,…

Instrumentation and Methods for Astrophysics · Physics 2018-07-13 Giuseppe Angora , Massimo Brescia , Stefano Cavuoti , Giuseppe Riccio , Maurizio Paolillo , Thomas H. Puzia

In the era of big astronomical surveys, our ability to leverage artificial intelligence algorithms simultaneously for multiple datasets will open new avenues for scientific discovery. Unfortunately, simply training a deep neural network on…

Real-world data generation often involves complex inter-dependencies among instances, violating the IID-data hypothesis of standard learning paradigms and posing a challenge for uncovering the geometric structures for learning desired…

Machine Learning · Computer Science 2023-05-30 Qitian Wu , Chenxiao Yang , Wentao Zhao , Yixuan He , David Wipf , Junchi Yan

Deep Learning (DL) has shown remarkable results in solving inverse problems in various domains. In particular, the Tikhonet approach is very powerful to deconvolve optical astronomical images (Sureau et al. 2020). Yet, this approach only…

Instrumentation and Methods for Astrophysics · Physics 2022-07-20 F. Nammour , U. Akhaury , J. N. Girard , F. Lanusse , F. Sureau , C. Ben Ali , J. -L. Starck

The task of classifying mammograms is very challenging because the lesion is usually small in the high resolution image. The current state-of-the-art approaches for medical image classification rely on using the de-facto method for ConvNets…

Computer Vision and Pattern Recognition · Computer Science 2021-01-21 Tao Wei , Angelica I Aviles-Rivero , Shuo Wang , Yuan Huang , Fiona J Gilbert , Carola-Bibiane Schönlieb , Chang Wen Chen

Building on our previous work, we apply a U-Net Variational Autoencoder (VAE) framework to denoise galaxy images from the James Webb Space Telescope (JWST) and enhance morphological classification. This study focuses on galaxies observed up…

Instrumentation and Methods for Astrophysics · Physics 2025-11-27 Sergey Mirzoyan

Multi-label image classification is about predicting a set of class labels that can be considered as orderless sequential data. Transformers process the sequential data as a whole, therefore they are inherently good at set prediction. The…

Computer Vision and Pattern Recognition · Computer Science 2022-05-17 Vacit Oguz Yazici , Joost van de Weijer , Longlong Yu

In remote sensing there exists a common need for learning scale invariant shapes of objects like buildings. Prior works relies on tweaking multiple loss functions to convert segmentation maps into the final scale invariant representation,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-26 Maxim Khomiakov , Michael Riis Andersen , Jes Frellsen