Postprocessing of decoded color images by adaptive linear filtering

Basit Öğe Kaydı
dc.authorid0000-0001-6556-4104
dc.contributor.authorBayazıt, Uluğen_US
dc.date.accessioned2015-01-15T22:59:59Z
dc.date.available2015-01-15T22:59:59Z
dc.date.issued2003-02
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Electrical-Electronics Engineeringen_US
dc.description.abstractThis paper presents an image adaptive linear filtering method for the reconstruction of the RGB (red, blue, green) color coordinates of a pixel from the lossy compressed luminance/chrominance color coordinates. In the absence of quantization noise, the RGB coordinates of a pixel can be perfectly reconstructed by employing a standard, fixed filter whose support includes only the luminance/chrominance coordinates at the spatial location of the pixel. However, in the presence of quantization noise, a filter with a larger support, that also spatially extends over the luminance/chrominance coordinate planes, is capable of exploiting the statistical dependence among the luminance/chrominance coordinate planes, and thereby yields more accurate reconstruction than the standard, fixed filter. We propose the optimal (in the minimum mean squared error sense) determination of the coefficients of this adaptive linear filter at the image encoder by solving a system of regression equations. When transmitted as side information to the image decoder, the filter coefficients need not incur significant overhead if they are quantized and compressed intelligently. Our simulation results demonstrate that the distortion of the decompressed color coordinate planes can be reduced by several tenths of a dB with negligible overhead rate by the application of our image adaptive linear filtering method.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationBayazit, U. (2003). Postprocessing of decoded color images by adaptive linear filtering. Signal Processing: Image Communication, 18(2), 91-101. doi:10.1016/S0923-5965(02)00083-8en_US
dc.identifier.doi10.1016/S0923-5965(02)00083-8
dc.identifier.endpage101
dc.identifier.issn0923-5965
dc.identifier.issn1879-2677
dc.identifier.issue2
dc.identifier.scopus2-s2.0-0037291804
dc.identifier.scopusqualityQ2
dc.identifier.startpage91
dc.identifier.urihttps://hdl.handle.net/11729/135
dc.identifier.urihttp://dx.doi.org/10.1016/S0923-5965(02)00083-8
dc.identifier.volume18
dc.identifier.wosWOS:000181043900001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakScience Citation Index Expanded (SCI-EXPANDED)en_US
dc.institutionauthorBayazıt, Uluğen_US
dc.institutionauthorid0000-0001-6556-4104
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherElsevier Scienceen_US
dc.relation.ispartofSignal Processing: Image Communicationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectColor image codingen_US
dc.subjectColor image processingen_US
dc.subjectAdaptive linear filteren_US
dc.subjectWaveleten_US
dc.subjectAdaptive filteringen_US
dc.subjectImage codingen_US
dc.subjectImage reconstructionen_US
dc.subjectVector quantizationen_US
dc.subjectAdaptive linear filtersen_US
dc.titlePostprocessing of decoded color images by adaptive linear filteringen_US
dc.typeArticleen_US
dspace.entity.typePublication

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