Mutual Information Based Watermarking Detection in Wavelet Domain for Copyright Protection

2008 ◽  
Author(s):  
Ting Luo ◽  
Guanglin Xing ◽  
Lei Shi
Keyword(s):  
Mutual Information ◽  
Copyright Protection ◽  
Wavelet Domain

A New Watermarking Algorithm for Relational Database Copyright Protection

2013 ◽  
Vol 385-386 ◽  
pp. 1713-1717
Author(s):  
Zhi Ping Li ◽  
Chuan Xian Jiang ◽  
Zhi Li
Keyword(s):  
Relational Database ◽  
Copyright Protection ◽  
High Frequency ◽  
Wavelet Domain ◽  
Two Dimension ◽  
Digital Watermarks ◽  
Definition Of ◽  
Processing Techniques ◽  
Detecting Method ◽  
Gauss Distribution

In order to enhance the robustness of database watermark, a watermarking algorithm for relational database copyright protection is proposed. Some types of data are selected from the relational database according to filtering rules, and two-dimension signal is formed. Then, the watermarking is embedded into the wavelet domain of two-dimension signal. We analyze that the wavelet high frequency coefficients of corresponding data follow the Gauss distribution and give the definition of the intensive factor. Employing the linear correlation detecting method, we can embed the watermark successfully in wavelet domain. The watermark can be distributed to different parts of the relational database. Experimental results show that the embedded digital watermarks with the proposed algorithm are invisible and some degree of robustness against the commonly used database processing techniques.

scholarly journals A Robust Time Efficient Watermarking Technique for Stereo Images

2015 ◽  
Vol 2015 ◽  
pp. 1-10
Author(s):  
M. A. Abdou ◽  
A. A. Saleh
Keyword(s):  
Particle Swarm Optimization ◽  
Computational Complexity ◽  
Real World ◽  
Copyright Protection ◽  
Imaging Techniques ◽  
Smart Phones ◽  
Computation Method ◽  
Wavelet Domain ◽  
Stereo Images ◽  
Swarm Optimization

Stereoscopic and multiview imaging techniques are used for reproducing a natural or real world scene. However, the fact that more information is displayed requires supporting technologies to ensure the storage and transmission of the sequences. Beyond these supports comes watermarking as a desirable alternative solution for copyright protection of stereo images and videos. This paper introduces a watermarking method applied to stereo images in wavelet domain. This method uses a particle swarm optimization (PSO) evolutionary computation method. The aim is to solve computational complexity problems as well as satisfy an execution time that complies with normal PCs or smart phones processors. Robustness against image attacks is tested, and results are shown.

Copyright Protector for Digital Library with GMFR

2013 ◽  
Vol 694-697 ◽  
pp. 2241-2246
Author(s):  
Jian Zhou ◽  
Feng Lan Li ◽  
Li Yun Su ◽  
Rui Hua Liu
Keyword(s):  
Digital Library ◽  
Copyright Protection ◽  
Wavelet Transformation ◽  
Matched Filter ◽  
Wavelet Domain ◽  
Original Image ◽  
Digital Literature ◽  
Stationary Noise ◽  
Copyright Information ◽  
Better Than

Copyright information is modulated and embedded into the wavelet domain of original image of digital literature in digital library with generalized matched filter receiver (GMFR), which is an optimum receiver. Because of the good performances of de-noising and whitening to non-stationary noise of wavelet transformation, a GMFR scheme of copyright protection for digital library only can be detected by authorized people. Numerical results show that the proposed copyright protector with GMFR in wavelet domain is effect and is also better than some traditional methods.

A New Approach in Digital Image Watermarking Using Fractal Model in DWT Domain

2011 ◽  
Vol 403-408 ◽  
pp. 3510-3518
Author(s):  
Sanaz Shahraeini ◽  
Mahdi Yaghoobi
Keyword(s):  
Copyright Protection ◽  
Image Watermarking ◽  
Fractal Model ◽  
Discrete Wavelet ◽  
Wavelet Domain ◽  
Compression Technique ◽  
Geometric Attacks ◽  
Fractal Compression ◽  
Gray Image ◽  
Multimedia Technologies

The recent progress in the digital multimedia technologies has offered many facilities in the transmission, reproduction and manipulation of data. However, this advance has also brought the problem such as copyright protection for content providers. Digital watermarking is one of the proposed solutions for copyright protection of multimedia. This paper proposes a blind watermarking algorithm based on fractal model in discrete wavelet domain for copyright protection. The idea of the presented scheme is to hide a binary image as a watermark with fractal parameters in wavelet domain of host image. Fractal compression technique is used to encode a gray image and fractal codes are embedded into the wavelet coefficients of the gray image according to well-connected watermark algorithm. The experimental results show that the algorithm is robust against geometric and non geometric attacks.

Sign in / Sign up

Export Citation Format

Share Document