X-Ray Image Restoration in the Wavelet Domain

Type : Article de conférence
Auteur(s) :  Y. Laib Dit Leksir, H. Bendjama, A. ALLAG
Année :  2007
Domaine : Electronique
Conférence: The International Conference of Signal and Image Engineering (ICSIE'07)
Lieu de la conférence:  London, UK
Résumé en PDF :  (résumé en pdf)
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Mots clés :  discrete wavelet transform (DWT), image denoising, wavelet, X-ray

Résumé : 

Wavelet expansions and wavelet transforms haveproven to be very efficient and effective in analyzing a verywide class of signals and phenomena. Wavelet expansion allowsa more accurate local description and separation of signalcharacteristics. While Fourier coefficient represents acomponent that lasts for all time, a wavelet expansioncoefficient represents a component that is itself local and iseasier to interpret. In this work, we have used images obtainedby the microfocus radioscopy system for the quality control ofthe metallization step of silicon solar cells. In many systems, theobserved image can result from the convolution of the trueimage and the point spread function (PSF) contaminated bynoise from various sources. The goal of this paper is toinvestigate the discrete wavelet transform (DWT) and itsapplication to X-Ray image denoising