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We present an automated approach to detect and extract information from the astronomical datasets on the shapes of such objects as galaxies, star clusters and, especially, elongated ones such as the gravitational lenses. First, the…

Instrumentation and Methods for Astrophysics · Physics 2019-09-10 S. S. Mirzoyan , H. Khachatryan , G. Yegorian , V. G. Gurzadyan

Large-scale astronomical surveys can capture numerous images of celestial objects, including galaxies and nebulae. Analysing and processing these images can reveal intricate internal structures of these objects, allowing researchers to…

Instrumentation and Methods for Astrophysics · Physics 2023-11-02 Peng Jia , Jiameng Lv , Runyu Ning , Yu Song , Nan Li , Kaifan Ji , Chenzhou Cui , Shanshan Li

In astronomy multiple images are frequently obtained at the same position of the sky for follow-up co-addition as it helps one go deeper and look for fainter objects. With large scale panchromatic synoptic surveys becoming more common,…

Astrophysics · Physics 2007-05-23 G. Jogesh Babu , Ashish Mahabal , S. G. Djorgovski , R. Williams

Object detection in optical remote sensing images, being a fundamental but challenging problem in the field of aerial and satellite image analysis, plays an important role for a wide range of applications and is receiving significant…

Computer Vision and Pattern Recognition · Computer Science 2016-04-05 Gong Cheng , Junwei Han

While automatic detection of point sources in astronomical images has experienced a great degree of success, less effort has been directed towards the detection of extended and low-surface brightness features. At present, existing…

Instrumentation and Methods for Astrophysics · Physics 2012-04-03 Christopher Hollitt , Melanie Johnston-Hollitt

Image segmentation plays a critical role in unlocking the mysteries of the universe, providing astronomers with a clearer perspective on celestial objects within complex astronomical images and data cubes. Manual segmentation, while…

Instrumentation and Methods for Astrophysics · Physics 2024-05-24 Duo Xu , Ye Zhu

Wide field small aperture telescopes are widely used for optical transient observations. Detection and classification of astronomical targets in observed images are the most important and basic step. In this paper, we propose an…

Instrumentation and Methods for Astrophysics · Physics 2020-05-06 Peng Jia , Qiang Liu , Yongyang Sun

In this paper we presented the modified algorithm for astrometric reduction of the wide-field images. This algorithm is based on the iterative using of the method of ordinary least squares (OLS) and statistical Student t-criterion. The…

Instrumentation and Methods for Astrophysics · Physics 2019-04-10 Volodymyr Akhmetov , Sergii Khlamov , Vladislav Khramtsov , Artem Dmytrenko

Object detection is a fundamental problem in computer vision, aiming at locating and classifying objects in image. Although current devices can easily take very high-resolution images, current approaches of object detection seldom consider…

Computer Vision and Pattern Recognition · Computer Science 2023-03-03 Jinyan Liu , Jie Chen

Machine learning algorithms are highly useful for the classification of time series data in astronomy in this era of peta-scale public survey data releases. These methods can facilitate the discovery of new unknown events in most…

Instrumentation and Methods for Astrophysics · Physics 2018-09-10 J. B. Cabral , B. Sánchez , F. Ramos , S. Gurovich , P. Granitto , J. Vanderplas

Object detection is a fundamental task in computer vision and image understanding, with the goal of identifying and localizing objects of interest within an image while assigning them corresponding class labels. Traditional methods, which…

Computer Vision and Pattern Recognition · Computer Science 2024-12-09 Fnu Neha , Deepshikha Bhati , Deepak Kumar Shukla , Md Amiruzzaman

Model fitting is frequently used to determine the shape of galaxies and the point spread function, for examples, in weak lensing analyses or morphology studies aiming at probing the evolution of galaxies. However, the number of parameters…

Cosmology and Nongalactic Astrophysics · Physics 2012-10-03 Guoliang Li , Bo Xin , Wei Cui

The Earth observation satellites have been monitoring the earth's surface for a long time, and the images taken by the satellites contain large amounts of valuable data. However, it is extremely hard work to manually analyze such huge data.…

Computer Vision and Pattern Recognition · Computer Science 2017-07-31 Kazuki Uehara , Hidenori Sakanashi , Hirokazu Nosato , Masahiro Murakawa , Hiroki Miyamoto , Ryosuke Nakamura

Modern astronomical surveys detect asteroids by linking together their appearances across multiple images taken over time. This approach faces limitations in detecting faint asteroids and handling the computational complexity of trajectory…

Earth and Planetary Astrophysics · Physics 2025-09-25 Nathan Golovich , Trevor Steil , Alex Geringer-Sameth , Keita Iwabuchi , Ryan Dozier , Roger Pearce

In recent years, deep learning has been successfully applied in various scientific domains. Following these promising results and performances, it has recently also started being evaluated in the domain of radio astronomy. In particular,…

Einstein rings are rare gem of the strong lensing phenomena. Unlike doubly or quadruply lensed systems, the ring images can be used to probe the underlying lens gravitational potential at every position angle, putting much tighter…

Astrophysics of Galaxies · Physics 2017-04-05 Chien-Hsiu Lee

Feature extraction and matching are among central problems of computer vision. It is inefficent to search features over all locations and scales. Neurophysiological evidence shows that to locate objects in a digital image the human visual…

Computer Vision and Pattern Recognition · Computer Science 2007-05-23 Liang Wu

Rare extragalactic objects can carry substantial information about the past, present, and future universe. Given the size of astronomical databases in the information era it can be assumed that very many outlier galaxies are included in…

Astrophysics of Galaxies · Physics 2021-01-13 Lior Shamir

Digital co-addition of astronomical images is a common technique for increasing signal-to-noise and image depth. A modification of this simple technique has been applied to the detection of minor bodies in the Solar System: first stationary…

Earth and Planetary Astrophysics · Physics 2015-05-18 Alex H. Parker , JJ. Kavelaars

We present a remote sensing pipeline that processes LiDAR (Light Detection And Ranging) data through machine & deep learning for the application of archeological feature detection on big geo-spatial data platforms such as e.g. IBM PAIRS…

Computer Vision and Pattern Recognition · Computer Science 2020-04-07 Conrad M Albrecht , Chris Fisher , Marcus Freitag , Hendrik F Hamann , Sharathchandra Pankanti , Florencia Pezzutti , Francesca Rossi