Hybrid Scheme with Triangulations for Transform Coding

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dc.contributor.authorPartyk, Martin
dc.contributor.authorPolec, Jaroslav
dc.contributor.authorKolingerova, Ivana
dc.coverage.issue3cs
dc.coverage.volume12cs
dc.date.accessioned2016-04-28T06:18:56Z
dc.date.available2016-04-28T06:18:56Z
dc.date.issued2003-09cs
dc.description.abstractOur approach to image region approximation offers a complete scheme consisting of several steps. We separate the encoding of region boundaries from the texture description. The original image is first segmented using an unsupervised segmentation method for color-texture regions. Following polygonal approximation of created regions causes the degradation of region boundaries. The triangulation is then applied to polygons and either all short edges, or all small triangles are filtered out from the triangular mesh. This results in new smaller regions. The encoding and decoding of polygons and triangles is very efficient, because we need to store only the vertices. For texture approximation we use 2D shape independent orthogonal transforms (e.g. DCT II). The texture is encoded with a code similar to JPEG arithmetic code. The encoding scheme proposed in this paper is much faster than latest approaches with polygonal approximation. We present the two triangulation algorithms - constrained greedy (CGT) and constrained Delaunay triangulation (CDT). Both CGT and CDT provide similar results.en
dc.formattextcs
dc.format.extent42-45cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2003, vol. 12, č. 3, s. 42-45. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/58107
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2003/03_03_42_45.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectTriangulationen
dc.subjectpolygonal approximationen
dc.subjecttexture ap-proximationen
dc.subjectorthogonal transformsen
dc.subjectimage compres-sionen
dc.titleHybrid Scheme with Triangulations for Transform Codingen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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