• Aucun résultat trouvé

Astronomical Image Denoising Using Dictionary Learning

N/A
N/A
Info
Télécharger
Protected

Academic year: 2021

Partager "Astronomical Image Denoising Using Dictionary Learning"

Copied!
15
0
0

Chargement.... (Voir le texte intégral maintenant)

Texte intégral

Figure

Fig. 1. Hubble images used for numerical experiments: a) Pandora’s galaxy cluster Abell 2744; b) an ACS image of 47 Tucanae; c) an image of WFC3 UVIS full field; and d) a cosmic strings simulation.
Fig. 2. Results of denoising with galaxy cluster image: a) noisy image, with a S/N P of 26.52 dB; b) the learned dictionary; c) the result of the wavelet shrinkage algorithm that reaches a S/N P of 38.92 dB; and d) the result of denoising using the diction
Fig. 4. Results of denoising with nebula image: a) the image used both for learning a noisy dictionary and denoising, with a S/N P of 26.67 dB;
Fig. 6. Example of cosmic string simulation denoising with a high noise level, using the learned dictionary from Fig
+6

Références

Télécharger maintenant ( PDF - 15 Page - 5.05 MB )

Documents relatifs

¿Can we apply Free Software production model to learning contents?

En este caso, es decir, para la generación de contenidos median- te la colaboración entre profesores de secundaria, hay muchos obstáculos a superar antes de que el modelo

Here we apply the incompressibility method to randomly generated graphs and “individually random” graphs—graphs with high Kolmogorov complexity

Example results are (i) the mean and variance of the number of (possibly overlapping) ordered labeled subgraphs of a labeled graph as a function of its randomness deficiency (how far

We present the theory of variational solutions for abstract evolution equations as- sociated to a coercive operator and we apply the theory to the case of uniformly elliptic parabolic equations.

Conclude to the existence and uniqueness of a global (in time) variational solution to the nonlinear McKean- Vlasov equation..

Reheating and Cosmic String Production

In conclusion, we have shown in this paper that highly excited strings are hardly produced at the end of inflation, because | β | 2 is highly suppressed by a exponential factor

On the wave equations in the spacetime of a cosmic string

cases are considered : the diffraction of an incident plane wave in section 3 and the case of a massive static scalar or vector field due to a point source. at rest

Why should we have a good signal-to-noise ratio? |

Au total il y a donc un seuil de perceptibilité des structures de petite taille et à faible contraste propre, et ce seuil est directement lié à la dose d'exposition ... 2-Un

Doc 3 : Image du film We need to talk about Kevin

Analysez chacun d'eux et dégagez la (les) piste(s) de possibles couples mère-fils.. Choisissez un des quatre documents et la piste qui vous lui avez

COSMIC Sizing of Machine Learning Image Classifier Software Using Neural Networks

The software receives from the data analyst the training session parameters (mean, standard deviation, number of epochs, number of images per mini batch, learning rate