NDLI: Geometrically invariant watermarking based on nonlinear anisotropic diffusion

Content Provider	IEEE Xplore Digital Library
Author	Zheng-Wei Shen Ji-Tao Wu
Copyright Year	2011
Description	Author affiliation: School of Mathematics, Beihang University, Beijing 100083, China (Zheng-Wei Shen; Ji-Tao Wu)
Abstract	A novel geometrically invariant watermarking scheme based on nonlinear anisotropic diffusion (NAD) detector of the feature points in images is proposed. The NAD feature points detector performs feature points detecting more accurately than Harris detector in an image, which correspondingly can definitely enhance the robustness and the imperceptibility of the watermarking scheme. According to the feature points detected by the NAD detector in watermarking carrier image, Delaunay tessellation method is used to segment the watermarking carrier image into a set of arbitrary shape disjoint triangles. After figuring out noise visibility function (NVF), an adaptive watermarking scheme is proposed based on Human Visual System (HVS). By using this scheme, a right-angled isosceles watermarking image, after being mapped, is embedded into the triangles of the carrier image, which is obtained using the Delaunay tessellation method. In this scheme, the embedding intensity is also well controlled by an adaptive parameter which will vary with the different texture of the carrier image.
Starting Page	126
Ending Page	131
File Size	255226
Page Count	6
File Format	PDF
ISBN	9781457702839
ISSN	21585695
e-ISBN	9781457702822
DOI	10.1109/ICWAPR.2011.6014511
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-10
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Tensile stress Anisotropic magnetoresistance delaunay tessellation Watermarking Detectors Feature extraction Eigenvalues and eigenfunctions Robustness nonlinear anisotropic diffusion detector Digital watermarking
Content Type	Text
Resource Type	Article

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