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dc.contributor.authorNtalianis, Klimis-
dc.contributor.authorDoulamis, Anastasios-
dc.contributor.authorKollias, Stefanos-
dc.contributor.authorDoulamis, Nikolaos-
dc.date.accessioned2024-10-10T13:27:14Z-
dc.date.available2024-10-10T13:27:14Z-
dc.date.issued2002-01-01-
dc.identifierscopus-0036448431-
dc.identifier.isbn0-7803-7622-6-
dc.identifier.issn1522-4880-
dc.identifier.urihttps://uniwacris.uniwa.gr/handle/3000/2816-
dc.description.abstractIn this paper a fully automatic system for embedding visually recognizable watermark patterns to video objects is proposed. The architecture consists of 3 main modules. During the first module unsupervised video object extraction is performed, by analyzing stereoscopic pairs of frames. Then each video object is decomposed into three levels with ten subbands, using the Discrete Wavelet Transform (DWT) and three pairs of subbands are formed (HL3, HL2), (LH3, LH2) and (HH3, HH2). Next Qualified Significant Wavelet Trees (QSWTs) are estimated for the specific pair of subbands that contains the highest energy content compared to the other two pairs. QSWTs are derived from the Embedded Zerotree Wavelet (EZW) algorithm and they are high-energy coefficient paths within the selected pair of subbands. Finally during the third module, visually recognizable watermark patterns are redundantly embedded to the coefficients of the highest energy QSWTs and the inverse DWT is applied to provide the watermarked video object. The performance of the proposed video object watermarking system is tested under various signal distortions such as JPEG lossy compression, sharpening, blurring and adding different types of noise. Experimental results on real life stereoscopic images are presented to indicate the efficiency and robustness of the proposed scheme.en_US
dc.language.isoenen_US
dc.relation.ispartofProceedings of the 2002 International Conference on Image Processingen_US
dc.titleAn automatic scheme for stereoscopic video object-based watermarking using qualified significant wavelet treesen_US
dc.typeConference Paperen_US
dc.relation.conference2002 International Conference on Image Processing (ICIP 2002), 22-25 September 2002, Rochester, New York, USAen_US
dc.identifier.scopus2-s2.0-0036448431-
dcterms.accessRights0en_US
dc.relation.deptDepartment of Business Administrationen_US
dc.relation.facultySchool of Administrative, Economics and Social Sciencesen_US
dc.relation.volume3en_US
dc.identifier.spage501en_US
dc.identifier.epage504en_US
dc.collaborationUniversity of West Attica (UNIWA)en_US
dc.journalsSubscriptionen_US
dc.publicationPeer Revieweden_US
dc.countryGreeceen_US
local.metadatastatusnot verifieden_US
item.cerifentitytypePublications-
item.languageiso639-1en-
item.openairetypeConference Paper-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextNo Fulltext-
item.grantfulltextnone-
crisitem.author.deptDepartment of Business Administration-
crisitem.author.facultySchool of Administrative, Economics and Social Sciences-
crisitem.author.parentorgSchool of Administrative, Economics and Social Sciences-
Appears in Collections:Book Chapter / Κεφάλαιο Βιβλίου
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