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Restoration of stained old manuscripts via a hybrid wavelet and bilateral filtering system

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dc.contributor.author Khadidja Kaibiche
dc.contributor.author Slami Saadi
dc.contributor.author Djamel Chikouche
dc.contributor.author Zoubida Messali
dc.date.accessioned 2021-05-17T10:09:07Z
dc.date.available 2021-05-17T10:09:07Z
dc.date.issued 2021
dc.identifier.uri http://dspace.univ-msila.dz:8080//xmlui/handle/123456789/24298
dc.description.abstract The conservation and restoration of old stained manuscripts is an activity devoted to the preservation and protection of things of historical and personal significance made mainly from paper, parchment, and skin. We present in this paper a hybrid implementation for de-noising and restoration of old degraded and stained manuscripts. This implementation is based on the statistical dependence of the wavelet coefficients of type Ortho-normal Wavelet Thresholding Algorithm based on the principle of Stein’s Unbiased Risk-Estimate Linear Expansion of Thresholds (OWT SURE-LET) and the synergy with bilateral filtering. First, the non-biased quadratic risk Stein estimator is applied to de-noise images corrupted by white Gaussian noise. In a second step, an improved bilateral filter is introduced to smooth and eliminate unnecessary details with the advantage of preserving edges between image regions. Obtained results show the effectiveness of the proposed synergy compared to separated approaches both on gray scale images and stained old manuscript. en_US
dc.publisher Université de M'sila en_US
dc.subject Wavelet; Multi-scale analysis; Bilateral filter; Restoration; Stained manuscripts en_US
dc.title Restoration of stained old manuscripts via a hybrid wavelet and bilateral filtering system en_US
dc.type Article en_US

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