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We present an enhanced unsupervised machine learning (UML) module within our previous \texttt{USmorph} classification framework featuring two components: (1) hierarchical feature extraction via a pre-trained ConvNeXt convolutional neural…

星系天体物理 · 物理学 2025-12-19 Guanwen Fang , Shiwei Zhu , Jun Xu , Shiying Lu , Chichun Zhou , Yao Dai , Zesen Lin , Xu Kong

Context. Computational techniques are essential for mining large databases produced in modern surveys with value-added products. Aims. This paper presents a machine learning procedure to carry out simultaneously galaxy morphological…

Image simulations are essential tools for preparing and validating the analysis of current and future wide-field optical surveys. However, the galaxy models used as the basis for these simulations are typically limited to simple parametric…

天体物理仪器与方法 · 物理学 2021-05-12 Francois Lanusse , Rachel Mandelbaum , Siamak Ravanbakhsh , Chun-Liang Li , Peter Freeman , Barnabas Poczos

Galaxies of rare morphology are of paramount scientific interest, as they carry important information about the past, present, and future universe. Once a rare galaxy is identified, studying it more effectively requires a set of galaxies of…

天体物理仪器与方法 · 物理学 2017-01-04 Lior Shamir

Morphological features in galaxies, like spiral arms, bars, rings, tidal tails etc. carry information about their structure, origin and evolution. It is therefore important to catalog and study such features and to correlate them with other…

星系天体物理 · 物理学 2025-03-06 Linn Abraham , Sheelu Abraham , Ajit K. Kembhavi , N. S. Philip , A. K. Aniyan , Sudhanshu Barway , Harish Kumar

Hydrodynamical simulations of galaxy formation and evolution attempt to fully model the physics that shapes galaxies. The agreement between the morphology of simulated and real galaxies, and the way the morphological types are distributed…

In this paper, we aim to improve the performance of a deep learning model towards image classification tasks, proposing a novel anchor-based training methodology, named \textit{Online Anchor-based Training} (OAT). The OAT method, guided by…

计算机视觉与模式识别 · 计算机科学 2024-06-19 Maria Tzelepi , Vasileios Mezaris

CNN-based deep learning models for disease detection have become popular recently. We compared the binary classification performance of eight prominent deep learning models: DenseNet 121, DenseNet 169, DenseNet 201, EffecientNet b0,…

图像与视频处理 · 电气工程与系统科学 2023-10-05 Shabbir Ahmed Shuvo , Md Aminul Islam , Md. Mozammel Hoque , Rejwan Bin Sulaiman

Classification and quantitative characterization of neuronal morphologies from histological neuronal reconstruction is challenging since it is still unclear how to delineate a neuronal cell class and which are the best features to define…

神经元与认知 · 定量生物学 2025-03-05 Xavier Vasques , Laurent Vanel , Guillaume Villette , Laura Cif

We propose the use of group convolutional neural network architectures (GCNNs) equivariant to the 2D Euclidean group, $E(2)$, for the task of galaxy morphology classification by utilizing symmetries of the data present in galaxy images as…

星系天体物理 · 物理学 2023-11-06 Sneh Pandya , Purvik Patel , Franc O , Jonathan Blazek

Mathematical morphology is a theory and technique to collect features like geometric and topological structures in digital images. Given a target image, determining suitable morphological operations and structuring elements is a cumbersome…

计算机视觉与模式识别 · 计算机科学 2019-09-05 Yucong Shen , Xin Zhong , Frank Y. Shih

Evolutionary computation methods have been successfully applied to neural networks since two decades ago, while those methods cannot scale well to the modern deep neural networks due to the complicated architectures and large quantities of…

神经与进化计算 · 计算机科学 2019-03-12 Yanan Sun , Bing Xue , Mengjie Zhang , Gary G. Yen

The scale of ongoing and future electromagnetic surveys pose formidable challenges to classify astronomical objects. Pioneering efforts on this front include citizen science campaigns adopted by the Sloan Digital Sky Survey (SDSS). SDSS…

天体物理仪器与方法 · 物理学 2019-07-09 Asad Khan , E. A. Huerta , Sibo Wang , Robert Gruendl , Elise Jennings , Huihuo Zheng

In this paper we propose a method for logo recognition using deep learning. Our recognition pipeline is composed of a logo region proposal followed by a Convolutional Neural Network (CNN) specifically trained for logo classification, even…

计算机视觉与模式识别 · 计算机科学 2017-05-04 Simone Bianco , Marco Buzzelli , Davide Mazzini , Raimondo Schettini

Deep networks thrive when trained on large scale data collections. This has given ImageNet a central role in the development of deep architectures for visual object classification. However, ImageNet was created during a specific period in…

计算机视觉与模式识别 · 计算机科学 2018-05-23 Nizar Massouh , Francesca Babiloni , Tatiana Tommasi , Jay Young , Nick Hawes , Barbara Caputo

Deep learning based approaches are now widely used across biophysics to help automate a variety of tasks including image segmentation, feature selection, and deconvolution. However, the presence of multiple competing deep learning…

图像与视频处理 · 电气工程与系统科学 2025-01-31 J Shepard Bryan , Pedro Pessoa , Meyam Tavakoli , Steve Presse

Deep learning, as a promising new area of machine learning, has attracted a rapidly increasing attention in the field of medical imaging. Compared to the conventional machine learning methods, deep learning requires no hand-tuned feature…

定量方法 · 定量生物学 2016-11-29 He Yang , Hengyong Yu , Ge Wang

Forthcoming cosmological imaging surveys, such as the Rubin Observatory LSST, require large-scale simulations encompassing realistic galaxy populations for a variety of scientific applications. Of particular concern is the phenomenon of…

星系天体物理 · 物理学 2024-09-30 Yesukhei Jagvaral , Francois Lanusse , Rachel Mandelbaum

In this paper, we examine the strength of deep learning technique for diagnosing lung cancer on medical image analysis problem. Convolutional neural networks (CNNs) models become popular among the pattern recognition and computer vision…

计算机视觉与模式识别 · 计算机科学 2018-04-24 Mehdi Fatan Serj , Bahram Lavi , Gabriela Hoff , Domenec Puig Valls