Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/36383
DC FieldValueLanguage
dc.contributor.authorShih, Y.en_US
dc.contributor.author施因澤zh_TW
dc.contributor.authorRei, C.en_US
dc.contributor.authorWang, H.en_US
dc.date2009zh_TW
dc.date.accessioned2014-06-06T07:55:22Z-
dc.date.available2014-06-06T07:55:22Z-
dc.identifier.issn0377-0427zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/36383-
dc.description.abstractIn this paper we present a convection-diffusion equation for processing image denoising, edge preservation and compression. We compare it with a popular nonlinear diffusion model which has been widely implemented in image denoising for Gaussian white noise. Here we show that this convection-diffusion model effectively removes noise, especially for the mixture of Gaussian and salt-and-pepper noises. We propose the modified streamline diffusion method [Y. Shih, H.C. Elman, Modified streamline diffusion schemes for convection-diffusion problems, Comput. Methods Appl. Mech. Eng, 1998.] for the discretization of this convection-diffusion model to prevent internal layers because of the discontinuities while using the coarsening algorithm for the image compression. Numerical experiments have shown that our convection-diffusion model for removing both Gaussian and salt-and-pepper noises, efficiently and reliably preserves edges quite satisfactorily. (C) 2009 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationJournal of Computational and Applied Mathematicsen_US
dc.relation.ispartofseriesJournal of Computational and Applied Mathematics, Volume 231, Issue 2, Page(s) 771-779.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.cam.2009.05.001en_US
dc.subjectImage denoisingen_US
dc.subjectEdge detectionen_US
dc.subjectCompressionen_US
dc.subjectStreamline diffusionen_US
dc.subjectmethoden_US
dc.subjectAdaptive finite elementen_US
dc.subjectConvection-diffusionen_US
dc.subjectanisotropic diffusionen_US
dc.subjectnonlinear diffusionen_US
dc.subjectschemesen_US
dc.titleA novel PDE based image restoration: Convection-diffusion equation for image denoisingen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.cam.2009.05.001zh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.fulltextno fulltext-
item.languageiso639-1en_US-
item.grantfulltextnone-
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