Results 21 to 30 of about 107,385 (182)
DSP IMPLEMENTATION OF THE FAST FOURIER TRANSFORM USING THE CORDIC ALGORITHM
ICTACT Journal on Communication Technology, 2018 Fourier transform is a tool enabling the understanding and implementation of a large number of numerical methods for signal and image processing. This tool has many applications in domains such as vocal recognition, image quality improvement, digital ...
Youness Mehdaoui, Rachid El Alami
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Astronomical Data Analysis and Sparsity: from Wavelets to Compressed Sensing [PDF]
, 2009 Wavelets have been used extensively for several years now in astronomy for many purposes, ranging from data filtering and deconvolution, to star and galaxy detection or cosmic ray removal.
Bobin, Jerome, Starck, Jean-Luc
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, 2010 The development of parallel-processing image-analysis codes is generally a challenging task that requires complicated choreography of interprocessor communications.
Mighell, Kenneth John
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Radio Astronomical Image Formation using Constrained Least Squares and Krylov Subspaces
, 2015 Image formation for radio astronomy can be defined as estimating the spatial power distribution of celestial sources over the sky, given an array of antennas.
Leshem, Amir +2 more
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GPU Acceleration of Image Convolution using Spatially-varying Kernel
, 2012 Image subtraction in astronomy is a tool for transient object discovery such as asteroids, extra-solar planets and supernovae. To match point spread functions (PSFs) between images of the same field taken at different times a convolution technique is ...
Hartung, Steven +3 more
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Fast Reconstruction of 3D Density Distribution around the Sun Based on the MAS by Deep Learning
The Astrophysical Journal, 2023 This study is the first attempt to generate a three-dimensional (3D) coronal electron density distribution based on the pix2pixHD model, whose computing time is much shorter than that of the magnetohydrodynamic (MHD) simulation.
Sumiaya Rahman +7 more
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Robust Statistics for Image Deconvolution
, 2017 We present a blind multiframe image-deconvolution method based on robust statistics. The usual shortcomings of iterative optimization of the likelihood function are alleviated by minimizing the M-scale of the residuals, which achieves more uniform ...
Budavari, Tamas +3 more
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The Astrophysical Journal Supplement Series, 2023 Recent studies indicate that a small number of rogue solar active regions (ARs) may have a significant impact on the end-of-cycle polar field and the long-term behavior of solar activity.
Ruihui Wang, Jie Jiang, Yukun Luo
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The Astronomical JournalThe Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will commence full-scale operations in 2026, yielding an unprecedented volume of astronomical images.
Yicun Duan +4 more
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The Astronomical JournalNeural posterior estimation (NPE), a type of amortized variational inference, is a computationally efficient means of constructing probabilistic catalogs of light sources from astronomical images.
Aakash Patel +4 more
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