About: Digital Watermarking in Digital Images     Goto   Sponge   NotDistinct   Permalink

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Description
  • Článek prezentuje některé vlastnosti digitálního vodotisku digitálních obrazů založeného na diskrétních ortogonálních transformacích (DCT - diskrétní kosinová transformace a KLT - Karhunenova-Loeveova transformace). Příspěvek je orientován na logický popis principu vodotiskových metod. V článku je prezentována základní analýza vlastností implementovaných (vložených) vodoznaků. Je uvedeno srovnání dvou metod digitálního vodotisku, obou založených na diskrétních ortogonálních transformacích. Obecně lze konstatovat, že diskrétní ortogonální transformace (zejména DCT) jsou základem pro ztrátovou kompresi. Všechny informace, které lze ztrátovou kompresí odstranit, je možné v obraze ponechat a modifikovat je vložením vodoznaku. Otázkou zůstane splnění požadavků pro vkládání vodoznaků. (cs)
  • The paper presents some properties of digital image watermarking based on discrete orthogonal transforms (DCT - discrete cosine transform and KLT - Karhunen Loeve Transform). This contribution is focused on the logical describing of watermarking method. In this paper basic analysis for the process of watermark implementation is presented. Comparing of two digital watermarking methods, both based on discrete orthogonal transforms, is described. In generally, discrete orthogonal transforms (mainly DCT) is a base for loss image compression. All information, which may be lost during lossy compression, is possible to leave in the image and these information may be modified during watermark embedding. Thus, a question is satisfying of remaining watermark requirements.
  • The paper presents some properties of digital image watermarking based on discrete orthogonal transforms (DCT - discrete cosine transform and KLT - Karhunen Loeve Transform). This contribution is focused on the logical describing of watermarking method. In this paper basic analysis for the process of watermark implementation is presented. Comparing of two digital watermarking methods, both based on discrete orthogonal transforms, is described. In generally, discrete orthogonal transforms (mainly DCT) is a base for loss image compression. All information, which may be lost during lossy compression, is possible to leave in the image and these information may be modified during watermark embedding. Thus, a question is satisfying of remaining watermark requirements. (en)
Title
  • Digital Watermarking in Digital Images
  • Digital Watermarking in Digital Images (en)
  • Digitální vodotisk digitálních obrazů (cs)
skos:prefLabel
  • Digital Watermarking in Digital Images
  • Digital Watermarking in Digital Images (en)
  • Digitální vodotisk digitálních obrazů (cs)
skos:notation
  • RIV/67985807:_____/08:00320318!RIV09-AV0-67985807
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(1ET200300413), P(1M06014), Z(AV0Z10300504)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 363629
http://linked.open...ai/riv/idVysledku
  • RIV/67985807:_____/08:00320318
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • digital image watermaking; discrete orthogonal transforms (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [F7C3005F14BC]
http://linked.open...v/mistoKonaniAkce
  • Prague
http://linked.open...i/riv/mistoVydani
  • Piscataway
http://linked.open...i/riv/nazevZdroje
  • Proceedings of 42nd Annual 2008 IEEE International Carnahan Conference on Security Technology
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Čandík, Marek
  • Brechlerová, Dagmar
http://linked.open...vavai/riv/typAkce
http://linked.open...ain/vavai/riv/wos
  • 000264043000008
http://linked.open.../riv/zahajeniAkce
http://linked.open...n/vavai/riv/zamer
number of pages
http://purl.org/ne...btex#hasPublisher
  • IEEE
https://schema.org/isbn
  • 978-1-4244-1816-9
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