Search Results for author: A. Asensio Ramos

Found 10 papers, 10 papers with code

Machine learning in solar physics

1 code implementation27 Jun 2023 A. Asensio Ramos, M. C. M. Cheung, I. Chifu, R. Gafeira

The application of machine learning in solar physics has the potential to greatly enhance our understanding of the complex processes that take place in the atmosphere of the Sun.

Accelerating Multiframe Blind Deconvolution via Deep Learning

1 code implementation21 Jun 2023 A. Asensio Ramos, S. Esteban Pozuelo, C. Kuckein

In this method, the image restoration problem is solved with a gradient descent method that is unrolled and accelerated aided by a few small neural networks.

Image Restoration

High-precision interpolation of stellar atmospheres with a deep neural network using a 1D convolutional auto encoder for feature extraction

1 code implementation12 Jun 2023 C. Westendorp Plaza, A. Asensio Ramos, C. Allende Prieto

Given the widespread availability of grids of models for stellar atmospheres, it is necessary to recover intermediate atmospheric models by means of accurate techniques that go beyond simple linear interpolation and capture the intricacies of the data.

Accelerating non-LTE synthesis and inversions with graph networks

1 code implementation20 Nov 2021 A. Vicente Arévalo, A. Asensio Ramos, S. Esteban Pozuelo

We find an optimal architecture for the graph network for predicting the departure coefficients of the levels of an atom from the physical conditions of a model atmosphere.

Approximate Bayesian Neural Doppler Imaging

1 code implementation20 Aug 2021 A. Asensio Ramos, C. Diaz Baso, O. Kochukhov

We use amortized neural posterior estimation to produce a model that approximates the high-dimensional posterior distribution for spectroscopic observations of selected spectral ranges sampled at arbitrary rotation phases.

Bayesian Inference

Planet cartography with neural learned regularization

1 code implementation8 Dec 2020 A. Asensio Ramos, E. Pallé

More importantly, if exoplanets are partially cloudy like the Earth is, we show that one can potentially map the distribution of persistent clouds that always occur on the same position on the surface (associated to orography and sea surface temperatures) together with non-persistent clouds that move across the surface.

Learning to do multiframe wavefront sensing unsupervisedly: applications to blind deconvolution

1 code implementation2 Jun 2020 A. Asensio Ramos, N. Olspert

The optimization of this loss function allows an end-to-end training of a machine learning model composed of three neural networks.

Image Reconstruction

Stokes Inversion based on Convolutional Neural Networks

1 code implementation7 Apr 2019 A. Asensio Ramos, C. Diaz Baso

Our aim is to develop a new inversion code based on the application of convolutional neural networks that can quickly provide a three-dimensional cube of thermodynamical and magnetic properties from the interpretation of two-dimensional maps of Stokes profiles.

Enhancing SDO/HMI images using deep learning

1 code implementation9 Jun 2017 C. J. Diaz Baso, A. Asensio Ramos

We test Enhance against Hinode data that has been degraded to a 28 cm diameter telescope showing very good consistency.

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