Increasing the Capacity and PSNR in Blind Watermarking Resist Against Cropping Attacks

A Robust HDWT-DCT Based Watermarking Scheme Against Cropping Attacks

In this paper, we propose a watermarking technique based on Haar Discrete Wavelet Transform-Discrete Cosine Transform (HDWT-DCT) by using matrixbased Two-dimensional Linear Discriminant Analysis (2DLDA) for color images. By embedding the reference watermark and using matrix-based 2DLDA scheme, we do not need all the embedded information of watermark and apply only part of matrix-based samples f...

Digital Image Watermarking Against Desynchronization Attacks

1 Digital Image Watermarking Against Desynchronization Attacks M Selin Department of Computer Science,KMEA Engineering College,Edathala Aluva, Kerala ABSTRACT Fast and massive dissemination of image data across the Internet imposes great challenges of protecting images against illegal access and unauthorized reproduction. Image watermarking provides a powerful solution for intellectual protecti...

Countermeasure for collusion attacks against digital watermarking

Customer identification watermarking today is one of the most promising application domains of digital watermarking. It enables to identify individual copies of otherwise indistinguishable digital copies. If done without any precautions, those individual watermarking are vulnerable to a number of specialized attacks based on an attacker collecting more than one individual copy. Fingerprinting a...

Robust Watermarking Scheme against Geometerical Attacks

In the age of e-media where everything is accessed through the internet it becomes very important to protect the privacy and the copyright of the data and the information which is shared through the internet. This digital way of communicating had raised the issue of protection of the rights of owners of the content that is distributed in electronic form. One of the ways to deal with this issue ...

Securing symmetric watermarking schemes against protocol attacks

Robust Watermarking Scheme Against Multiple Attacks

A good watermarking technique helps in protecting the copy right of the image which is the motivational factor in developing new encryption techniques .The present paper found a novel fact that by inserting the watermark using Least Significant Bit (LSB into three components of the image namely RED GREEN and BLUE. The watermark is a binary image ,embedded into host image by altering LSB values ...