|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 2 van 7 gevonden artikelen
| Titel: |
A Robust Digital Watermarking Based on Local Complex Angular Radial Transform |
| Auteur: |
Niu, Pan-pan Wang, Xiang-yang Yang, Hong-ying Wang, Pei Wang, Ai-long |
| Verschenen in: |
Fundamenta informaticae |
| Paginering: | Jaargang 135 (2014) nr. 3 pagina's 243-268 |
| Jaar: |
2014-11-24 |
| Inhoud: |
Geometric distortions that cause displacement between embedding and detection are usually difficult for watermark to survive. It is a challenging work to design a robust image watermarking scheme against geometric distortions, especially for local geometric distortions. Based on probability density and complex angular radial transform theory, a new image watermarking algorithm robust to geometric distortions is proposed in this paper. We firstly extract the steady image feature points by using new image feature point detector, which is based on the probability density. Then we build the affine invariant local feature regions based on probability density auto-correlation matrix. And finally, we present a new image watermarking algorithm robust to geometric distortions, in which the digital watermark is embedded into the local complex angular radial transform (CART) coefficients. Experiments results show that the proposed image watermarking is not only invisible and robust against common image processing operations, but also robust against the geometric distortions. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 2 van 7 gevonden artikelen
| << vorige | volgende >> |