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Traitement de l'image : de l'équation de la chaleur aux ondelettes

2004 IREM-Bordeaux
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Angular multiselectivity analysis of images

Abstract: Two-dimensional wavelet analysis with directional frames is well-adapted and efficient for detecting oriented features in images but, for (quasi-)isotropic components, it is unnecessarily redundant. Using wavelets with variable angular selectivity leads to a prohibitive computing cost in the continuous wavelet formalism.
2003 SPIE - the International Society for Optical Engineering. Proceedings
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Extracting the apparent motion from two successive EIT images

2003 ““Proceedings of the ISCS Symp. 2003: Solar Variability as an Input to the Earth’s Environment” (June 23-28, 2003)”
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Measuring a curvature radius with directional wavelets

Abstract: We present in this paper a new technique based on the Continuous Wavelet Transfrom (CWT) for estimating the curvature radius of contours delimiting simple objects in images. This method exploits the link which exists between the angular
2003 GROUP 24: Physical and Mathematical Aspects of Symmetries.
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Multiscale observations of the solar atmosphere

Abstract: The observations of the Extreme ultraviolet Imaging Telescope (EIT) contain various small features of the solar coronal regions: EUV bright points, ephemeral regions, brightenings, loops segments, cosmic ray hits, etc.
2003 GROUP 24: Physical and Mathematical Aspects of Symmetries.
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Small features in the EIT-SoHO images

2002 Proc. SOHO-11 Conference ‘From Solar Min to Max: Half a Solar Cycle with SOHO’ (March 2002, Davos, CH)
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Penrose tilings, quasicrystals, and wavelets

1999 Proc. SPIE 3813, Wavelet Applications in Signal and Image Processing VII
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Optical deflection tomography with reconstruction based on sparsity

0001 Proc. of OPTIMESS2012 (4-5 April 2012), Antwerp, Belgium.
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