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The growth of sky surveys and the large amount of stellar spectra in the current databases, has generated the necessity of developing new methods to estimate atmospheric parameters, a fundamental task on stellar research. In this work we…

Instrumentation and Methods for Astrophysics · Physics 2022-06-27 Miguel Flores R. , Luis J. Corral , Celia R. Fierro-Santillán

The rapid advancements of computing technology facilitate the development of diverse deep learning applications. Unfortunately, the efficiency of parallel computing infrastructures varies widely with neural network models, which hinders the…

Machine Learning · Computer Science 2020-12-04 Chuan-Chi Wang , Ying-Chiao Liao , Chia-Heng Tu , Ming-Chang Kao , Wen-Yew Liang , Shih-Hao Hung

Modeling of strong gravitational lenses is a necessity for further applications in astrophysics and cosmology. Especially with the large number of detections in current and upcoming surveys such as the Rubin Legacy Survey of Space and Time…

Instrumentation and Methods for Astrophysics · Physics 2023-03-30 S. Schuldt , R. Cañameras , Y. Shu , S. H. Suyu , S. Taubenberger , T. Meinhardt , L. Leal-Taixé

Gaze estimation is a crucial task in computer vision, however, existing methods suffer from high computational costs, which limit their practical deployment in resource-limited environments. In this paper, we propose a novel lightweight…

Computer Vision and Pattern Recognition · Computer Science 2023-05-23 Tao Xu , Bo Wu , Ruilong Fan , Yun Zhou , Di Huang

Models recently used in the literature proving residual networks (ResNets) are better than linear predictors are actually different from standard ResNets that have been widely used in computer vision. In addition to the assumptions such as…

Machine Learning · Computer Science 2022-01-19 Kuan-Lin Chen , Ching-Hua Lee , Harinath Garudadri , Bhaskar D. Rao

Retrieving the physical parameters from spectroscopic observations of exoplanets is key to understanding their atmospheric properties. Exoplanetary atmospheric retrievals are usually based on approximate Bayesian inference and rely on…

Earth and Planetary Astrophysics · Physics 2023-04-19 Malavika Vasist , François Rozet , Olivier Absil , Paul Mollière , Evert Nasedkin , Gilles Louppe

Characterizing the fundamental parameters of stars from observations is crucial for studying the stars themselves, their planets, and the galaxy as a whole. Stellar evolution theory predicting the properties of stars as a function of…

Solar and Stellar Astrophysics · Physics 2021-09-29 Cecilia Garraffo , Pavlos Protopapas , Jeremy J. Drake , Ignacio Becker , Phillip Cargile

In this paper, we consider the problem of reference-based video super-resolution(RefVSR), i.e., how to utilize a high-resolution (HR) reference frame to super-resolve a low-resolution (LR) video sequence. The existing approaches to RefVSR…

Computer Vision and Pattern Recognition · Computer Science 2021-10-29 Yaping Zhao , Mengqi Ji , Ruqi Huang , Bin Wang , Shengjin Wang

Real-time semantic segmentation, which can be visually understood as the pixel-level classification task on the input image, currently has broad application prospects, especially in the fast-developing fields of autonomous driving and drone…

Computer Vision and Pattern Recognition · Computer Science 2022-03-08 Guangwei Gao , Guoan Xu , Juncheng Li , Yi Yu , Huimin Lu , Jian Yang

The high energy cost of processing deep convolutional neural networks impedes their ubiquitous deployment in energy-constrained platforms such as embedded systems and IoT devices. This work introduces convolutional layers with pre-defined…

Computer Vision and Pattern Recognition · Computer Science 2020-02-06 Souvik Kundu , Mahdi Nazemi , Massoud Pedram , Keith M. Chugg , Peter A. Beerel

Interpreting the observations of exoplanet atmospheres to constrain physical and chemical properties is typically done using Bayesian retrieval techniques. Because these methods require many model computations, a compromise is made between…

Earth and Planetary Astrophysics · Physics 2024-01-10 Francisco Ardévol Martínez , Michiel Min , Daniela Huppenkothen , Inga Kamp , Paul I. Palmer

Upcoming next-generation sky surveys will detect large number of faint objects with magnitudes larger than 25. When objects are crowded within a limited a field of view, blending becomes unavoidable. Blending leads to the omission of many…

Instrumentation and Methods for Astrophysics · Physics 2026-03-03 Yibo Yan , Chao Liu , Jiadong Li , Feng Wang

Thanks to the advances in modern instrumentation we have learned about many exoplanets that span a wide range of masses and composition. Studying their atmospheres provides insight into planetary origin, evolution, dynamics, and…

Earth and Planetary Astrophysics · Physics 2019-09-18 D. Shulyak , M. Rengel , A. Reiners , U. Seemann , F. Yan

This technical note describes the design and modular implementation of a one-dimensional convolutional neural network (1D CNN) adapted from residual networks (ResNet), developed for photometric regression tasks with an emphasis on low star…

Instrumentation and Methods for Astrophysics · Physics 2025-06-04 Po-Chieh Yu

This work presents a deep-learning approach to estimate atmospheric density profiles for use in planetary entry guidance problems. A long short-term memory (LSTM) neural network is trained to learn the mapping between measurements available…

Systems and Control · Electrical Eng. & Systems 2023-10-31 Jens A. Rataczak , Davide Amato , Jay W. McMahon

We present the 4MOST-HR resolution Non-Local Thermal Equilibrium (NLTE) Payne artificial neural network (ANN), trained on $404\,793$ new FGK spectra with 16 elements computed in NLTE. This network will be part of the Stellar Abundances and…

Chemical Species Tomography (CST) has been widely used for in situ imaging of critical parameters, e.g. species concentration and temperature, in reactive flows. However, even with state-of-the-art computational algorithms the method is…

Image and Video Processing · Electrical Eng. & Systems 2021-04-06 Yunfan Jiang , Jingjing Si , Rui Zhang , Godwin Enemali , Bin Zhou , Hugh McCann , Chang Liu

We present a database of 45,000 atmospheric models (which will become 80,000 models by the end of the project) with stellar masses between 9 and 120 M$_{\odot}$, covering the region of the OB main sequence and W-R stars in the H-R diagram.…

The paradigm of automated waste classification has recently seen a shift in the domain of interest from conventional image processing techniques to powerful computer vision algorithms known as convolutional neural networks (CNN).…

Computer Vision and Pattern Recognition · Computer Science 2021-10-25 Mazin Abdulmahmood , Ryan Grammenos

Hyperspectral remote sensing technology has significant application value in fields such as forestry ecology and precision agriculture, while also putting forward higher requirements for fine ground object classification. However, although…

Computer Vision and Pattern Recognition · Computer Science 2025-11-05 Yulin Tong , Fengzong Zhang , Haiqin Cheng
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