VLSI Architecture for Spread Spectrum Image Watermarking Using Binary Watermark

2012 ◽  
Author(s):  
Sudip Ghosh ◽  
Somsubhra Talapatra ◽  
Debasish Mondal ◽  
Navonil Chatterjee ◽  
Hafizur Rahaman ◽  
...  
Keyword(s):  
Spread Spectrum ◽  
Image Watermarking ◽  
Vlsi Architecture

VLSI Architecture for Spatial Domain Spread Spectrum Image Watermarking Using Gray-Scale Watermark

2012 ◽  
pp. 375-376
Author(s):  
Sudip Ghosh ◽  
Somsubhra Talapatra ◽  
Debasish Mondal ◽  
Navonil Chatterjee ◽  
Hafizur Rahaman ◽  
...  
Keyword(s):  
Spread Spectrum ◽  
Image Watermarking ◽  
Vlsi Architecture ◽  
Spatial Domain ◽  
Gray Scale

scholarly journals Dual Mode VLSI Architecture for Spread Spectrum Image Watermarking using Binary Watermark

2012 ◽  
Vol 6 ◽  
pp. 784-791 ◽  
Author(s):  
Sudip Ghosh ◽  
Somsubhra Talapatra ◽  
Jayasree Sharma ◽  
Navonil Chatterjee ◽  
Hafizur Rahaman ◽  
...  
Keyword(s):  
Spread Spectrum ◽  
Image Watermarking ◽  
Vlsi Architecture ◽  
Dual Mode

Spread Spectrum Image Watermarking Based on Perceptual Quality Metric

2011 ◽  
Vol 20 (11) ◽  
pp. 3207-3218 ◽  
Author(s):  
Fan Zhang ◽  
Wenyu Liu ◽  
Weisi Lin ◽  
King Ngi Ngan
Keyword(s):  
Spread Spectrum ◽  
Image Watermarking ◽  
Perceptual Quality ◽  
Quality Metric

scholarly journals A Fuzzy Controlled Image Watermarking Based on a Dual Transform Technique

2016 ◽  
Vol 5 (1) ◽  
pp. 83-92
Author(s):  
Bander Albarakati, Abdullah Basuhail, Gibrael Abo Samra Bander Albarakati, Abdullah Basuhail, Gibrael Abo Samra
Keyword(s):  
Fuzzy Logic ◽  
Spread Spectrum ◽  
Image Watermarking ◽  
Error Correcting Code ◽  
Recovery Process ◽  
Discrete Wavelet ◽  
Hybrid Watermarking ◽  
High Level ◽  
Code Division Multiple

This paper presents a new watermarking technique using hybrid image transforms that aims to be very robust against attacks. It also aims to reduce the amount of distortion created from embedding the watermark as much as possible, and have good capacity. The proposed system uses a hybrid watermarking technique that is based on Non-Subsampled Contourlet Transform and Discrete Wavelet Transform. In addition, the proposed system makes use of the fuzzy logic to automatically choose the strength of the embedded watermark. Furthermore, the system uses Spread Spectrum Code Division Multiple Access to embed and recover the watermark after transforming the image. To enhance recoverability of the watermarks, the system uses a high level of redundancy in the embedding process, which allows a powerful Error Correcting Code to be used in the recovery process. The fuzzy logic is used to help the system in producing watermarked images that reserve their quality and not be heavily altered after embedding the watermark. Experiments were performed to measure the quality of the proposed system using JPEG compression attacks. The results showed that the proposed system is robust and has good capacity and imperceptibly although it suffers from being computationally complex.

Watermarking Techniques for DRM Applications

2009 ◽  
pp. 71-100
Author(s):  
Alessandro Piva ◽  
Roberto Caldelli ◽  
Alessia De Rosa ◽  
Mauro Barni ◽  
Vito Cappellini
Keyword(s):  
Digital Watermarking ◽  
Digital Image ◽  
Spread Spectrum ◽  
Image Watermarking ◽  
Mathematical Formulation ◽  
Multimedia Content ◽  
Practical Implementation ◽  
Digital Image Watermarking ◽  
Spread Spectrum Watermarking ◽  
Watermarking Scheme

The need to safeguard the property rights of multimedia content from unauthorized copying and the possibility to determine the true owners of the asset can be faced by resorting to efficient digital watermarking systems. This chapter presents a mathematical formulation to define a digital watermarking system and describes the general requirements to be satisfied, with more emphasis given to the aspects of security, robustness, and imperceptibility. After this general discussion, the two main classes of digital watermarking schemes, namely the spread-spectrum watermarking and the side-informed watermarking are explained by highlighting their main advantages and drawbacks. This analysis is completed by the description of a practical implementation of a digital image watermarking scheme. Finally, the use of watermarking systems in the framework of a DRM is deeply analyzed.

scholarly journals Dual purpose FWT domain spread spectrum image watermarking in real time

2009 ◽  
Vol 35 (2) ◽  
pp. 415-433 ◽  
Author(s):  
Santi P. Maity ◽  
Malay K. Kundu ◽  
Seba Maity
Keyword(s):  
Real Time ◽  
Spread Spectrum ◽  
Image Watermarking ◽  
Dual Purpose
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