We discuss wavelet filter parametrization as a means to add security to wavelet based watermarking schemes. It turns out that our proposed scheme is resistant to unauthorized detection and unauthorized removal attacks and is equally robust as compared to the use of standard wavelet filters in case the underlying watermarking scheme is spread-spectrum based. Quantization-based watermarking techn...

Watermarking schemes ensure digital image security and copyright protection to prevent unauthorized distribution. Zero-watermarking methods do not modify the image. This characteristic is a requirement in some tasks that need integrity, such as medical images. obtain specific features for master share construction protect paper proposed zero-watermarking scheme based on K-means clustering ROI d...

With the increasing usage of digital multimedia, the protection of intellectual property rights problem has become a very important issue. Digital watermarking is now drawing attention as a new method of protecting multimedia content from unauthorized copying. In this paper, need for audio watermarking along with its important properties is explained. The paper also brings to view works done by...

A quantization based method for watermarking digital images is presented here. This scheme inserting a watermark bit into wavelet coefficients of high magnitude (LH3-HL3). Also, this watermarking technique is blind (i.e., neither the original image nor any side information is required in the recovery process) as well as being very computationally efficient. This watermarking algorithm combines ...

Digital audio watermarking is a technique for embedding additional data along with audio signal. Embedded data is used for copyright owner identification. A number of audio watermarking techniques are proposed. These techniques exploit different ways in order to embed a robust watermark and to maintain the original audio signal fidelity. This paper makes a tutorial in general digital watermarki...

Piracy is a big threat to the original contents. This multi-model approach interleaves some frequency domain watermarking strategies to counteract shortcomings of one strategy by the advantages of other. The original image is divided into spatially disjoint blocks. Watermarking is a way of embedding a mark that hides information in a multimedia carrier. Major issues in Image watermarking are to...

Digital watermarking techniques have been developed to protect the copyright of media signals. This chapter aims to provide a universal review and background about the watermarking definition, concept and the main contributions in this field. The chapter starts with a general view of digital data, the Internet and the products of these two, namely, the multimedia and the e-commerce. Then, it pr...

Digital watermarking denotes the hiding of information in general documents, where the embedded information can be exploited to combat copyright infringements or to verify the integrity of a document. We emphasize that blind watermarking, where the original document is not known to the watermark receiver, can be interpreted as communication with side information at the encoder. Significant impr...

Based on previous research work on both digital watermarking and stereo video, a novel scheme for watermarking stereo video is introduced. Firstly, an adaptive watermarking model based on disparity vectors is proposed after analyzing the characteristics of stereo video. Then a new watermarking algorithm is introduced. Adaptive scheme and pre-encoding with low density parity check (LDPC) codes a...