474 search results - page 58 / 95 » Region-Based Watermarking for Images |
IWDW
2005
Springer
14 years 3 months ago
2005
Springer
In this paper, we propose a robust watermarking method for 3-D triangle surface meshes. Most previous methods based on the wavelet analysis can process only semi-regular meshes. Ou...
IWDW
2004
Springer
14 years 3 months ago
2004
Springer
Most of watermarking techniques are based on Wide Spread Spectrum (WSS). Security of such schemes is studied here in adopting a cryptanalysis point of view. The security is proport...
IH
1999
Springer
14 years 2 months ago
1999
Springer
Many techniques for watermarking of digital images have appeared in numerous publications. Most of these techniques are sensitive to cropping and or a ne distortions e.g., rotatio...
IWDW
2009
Springer
14 years 4 months ago
2009
Springer
In this paper, we propose a blind watermarking algorithm for 3D meshes. The proposed algorithm embeds spectral domain constraints in segmented patches. After aligning the 3D object...
INFORMATICALT
2008
13 years 10 months ago
2008
Abstract. This paper presents a novel robust digital image watermarking scheme using subsampling and nonnegative matrix factorization. Firstly, subsampling is used to construct a s...