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Three dimensional (3D) object recognition is becoming a key desired capability for many computer vision systems such as autonomous vehicles, service robots and surveillance drones to operate more effectively in unstructured environments.…

Computer Vision and Pattern Recognition · Computer Science 2021-08-25 Chenxi Xiao , Juan Wachs

Transferring the ImageNet pre-trained weights to the various remote sensing tasks has produced acceptable results and reduced the need for labeled samples. However, the domain differences between ground imageries and remote sensing images…

Computer Vision and Pattern Recognition · Computer Science 2023-02-06 Ali Ghanbarzade , Hossein Soleimani

Subspace clustering refers to the problem of clustering high-dimensional data points into a union of low-dimensional linear subspaces, where the number of subspaces, their dimensions and orientations are all unknown. In this paper, we…

Machine Learning · Statistics 2014-03-17 Reinhard Heckel , Eirikur Agustsson , Helmut Bölcskei

In recent years, deep convolutional neural network (DCNN) has seen a breakthrough progress in natural image recognition because of three points: universal approximation ability via DCNN, large-scale database (such as ImageNet), and…

Computer Vision and Pattern Recognition · Computer Science 2020-01-13 Haifeng Li , Xin Dou , Chao Tao , Zhixiang Hou , Jie Chen , Jian Peng , Min Deng , Ling Zhao

In Astronomy, a huge amount of image data is generated daily by photometric surveys, which scan the sky to collect data from stars, galaxies and other celestial objects. In this paper, we propose a technique to leverage unlabeled…

Computer Vision and Pattern Recognition · Computer Science 2020-06-26 Ana Martinazzo , Mateus Espadoto , Nina S. T. Hirata

Change detection is one of the main problems in remote sensing, and is essential to the accurate processing and understanding of the large scale Earth observation data available through programs such as Sentinel and Landsat. Most of the…

Computer Vision and Pattern Recognition · Computer Science 2019-08-29 Rodrigo Caye Daudt , Bertrand Le Saux , Alexandre Boulch , Yann Gousseau

This study investigate the effectiveness of using Deep Learning (DL) for the classification of planetary nebulae (PNe). It focusses on distinguishing PNe from other types of objects, as well as their morphological classification. We adopted…

Instrumentation and Methods for Astrophysics · Physics 2021-02-01 Dayang N. F. Awang Iskandar , Albert A. Zijlstra , Iain McDonald , Rosni Abdullah , Gary A. Fuller , Ahmad H. Fauzi , Johari Abdullah

The applications of artificial neural networks in the cosmological field have shone successfully during the past decade, this is due to their great ability of modeling large amounts of datasets and complex nonlinear functions. However, in…

Instrumentation and Methods for Astrophysics · Physics 2024-05-08 Isidro Gómez-Vargas , Joshua Briones Andrade , J. Alberto Vázquez

In the context of radio galaxy classification, most state-of-the-art neural network algorithms have been focused on single survey data. The question of whether these trained algorithms have cross-survey identification ability or can be…

Instrumentation and Methods for Astrophysics · Physics 2019-07-31 Hongming Tang , Anna M. M. Scaife , J. P. Leahy

Machine learning (ML) algorithms have revolutionized the way we interpret data in astronomy, particle physics, biology and even economics, since they can remove biases due to a priori chosen models. Here we apply a particular ML method, the…

Cosmology and Nongalactic Astrophysics · Physics 2020-06-24 Rubén Arjona , Savvas Nesseris

The development of fast and accurate methods of photometric redshift estimation is a vital step towards being able to fully utilize the data of next-generation surveys within precision cosmology. In this paper we apply a specific approach…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 P. E. Freeman , J. A. Newman , A. B. Lee , J. W. Richards , C. M. Schafer

Self-supervised learning (SSL) has become a powerful paradigm for learning from large, unlabeled datasets, particularly in computer vision (CV). However, applying SSL to multispectral remote sensing (RS) images presents unique challenges…

Computer Vision and Pattern Recognition · Computer Science 2026-01-06 Tom Burgert , Leonard Hackel , Paolo Rota , Begüm Demir

Computer vision techniques have been used to produce accurate and generic crowd count estimators in recent years. Due to severe occlusions, appearance variations, perspective distortions and illumination conditions, crowd counting is a very…

Computer Vision and Pattern Recognition · Computer Science 2017-10-27 Haiyan Yao , Kang Han , Wanggen Wan , Li Hou

Quickly growing computing facilities and an increasing number of extragalactic observations encourage the application of data-driven approaches to uncover hidden relations from astronomical data. In this work we raise the problem of…

Cosmology and Nongalactic Astrophysics · Physics 2020-03-25 A. Elyiv , O. Melnyk , I. Vavilova , D. Dobrycheva , V. Karachentseva

The next-generation astronomy digital archives will cover most of the universe at fine resolution in many wave-lengths, from X-rays to ultraviolet, optical, and infrared. The archives will be stored at diverse geographical locations. One of…

Databases · Computer Science 2016-08-31 Alexander S. Szalay , Peter Kunszt , Ani Thakar , Jim Gray

Continuous learning seeks to perform the learning on the data that arrives from time to time. While prior works have demonstrated several possible solutions, these approaches require excessive training time as well as memory usage. This is…

Computer Vision and Pattern Recognition · Computer Science 2020-07-06 Chih-Hsing Ho , Shang-Ho , Tsai

Machine-learning is playing an increasing role in helping the astronomical community to face data analysis challenges, in particular in the field of Galactic Archaeology and large scale spectroscopic surveys. We present recent developments…

Astrophysics of Galaxies · Physics 2025-03-12 G. Guiglion

Deep convolutional neural networks (DCNNs) have become the most common solution for automatic image annotation due to their non-parametric nature, good performance, and their accessibility through libraries such as TensorFlow. Among other…

Astrophysics of Galaxies · Physics 2022-01-11 Sanchari Dhar , Lior Shamir

How do computers and intelligent agents view the world around them? Feature extraction and representation constitutes one the basic building blocks towards answering this question. Traditionally, this has been done with carefully engineered…

Computer Vision and Pattern Recognition · Computer Science 2020-03-31 Jaime Spencer , Richard Bowden , Simon Hadfield

Despite the utility of neural networks (NNs) for astronomical time-series classification, the proliferation of learning architectures applied to diverse datasets has thus far hampered a direct intercomparison of different approaches. Here…

Instrumentation and Methods for Astrophysics · Physics 2020-10-05 Sara Jamal , Joshua S. Bloom