2003A&A...398..785S


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.06CET16:33:29

2003A&A...398..785S - Astronomy and Astrophysics, volume 398, 785-800 (2003/2-1)

Astronomical image representation by the curvelet transform.

STARCK J.L., DONOHO D.L. and CANDES E.J.

Abstract (from CDS):

We outline digital implementations of two newly developed multiscale representation systems, namely, the ridgelet and curvelet transforms. We apply these digital transforms to the problem of restoring an image from noisy data and compare our results with those obtained via well established methods based on the thresholding of wavelet coefficients. We show that the curvelet transform allows us also to well enhance elongated features contained in the data. Finally, we describe the Morphological Component Analysis, which consists in separating features in an image which do not present the same morphological characteristics. A range of examples illustrates the results.

Abstract Copyright:

Journal keyword(s): methods: data analysis - techniques: image processing

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 ACO 370 ClG 02 39 50.5 -01 35 08           ~ 650 0
2 SBSG 0335-052 bCG 03 37 44.04 -05 02 38.5     16.65     ~ 438 1
3 NGC 2997 GiG 09 45 38.7537949543 -31 11 27.357027761   9.97 9.41 8.84 9.9 ~ 386 0

    Equat.    Gal    SGal    Ecl

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