Digital watermarking is a growing research area to mark digital content (image, audio, video, etc.) by embedding information into the content itself. This technique opens or provides additional and useful features for many application fields (like DRM, annotation, integrity proof and many more). The role of watermarking algorithm evaluation (in a broader sense benchmarking) is to provide a fair...

Digital watermarking is envisaged as a potential technology for copyright protection and manipulation recognition. A key issue in the usage of robust watermarking is the evaluation of robustness and security. StirMark Benchmarking has been taken to set a benchmarking suite for audio watermarking in addition to existing still image evaluation solutions. In particular we give an overview of recen...

ow a days Internet is offering a great convenience in transmitting large amount of data in different parts of the world. However, the security and safety of long distance communication remains a matter of concern. Recording, editing and replication of multimedia contents may be the consequence of transmission of such data over the internet. In order to tackle this problem the need of copyright ...

Quantization index modulation (QIM) is widely used in watermarking, but QIM cannot be applied to reversible watermarking directly due to its inherent limitations. In this paper, an improvement is made to QIM to make it suitable for reversible watermarking. Based on the improved QIM (IQIM), a reversible watermarking scheme for 2D CAD engineering graphics is proposed. The relative amplitudes and ...

Watermarking models a copyright protection mechanism where an original data sequence is modi ed before distribution to the public in order to embed some extra information. The embedding should be transparent (i.e., the modi ed data should be similar to the original data) and robust (i.e., the information should be recoverable even if the data is modi ed further). In this thesis, we describe the...

Designing a practical watermarking scheme with high robustness, feasible imperceptibility, and large capacity remains one of the most important research topics in robust watermarking. This paper presents a posterior hidden Markov model (HMM-) based informed image watermarking scheme, which well enhances the practicability of the prior-HMM-based informed watermarking with favorable robustness, i...

An important parameter in evaluating data hiding methods is hiding capacity [3] [11] [12], [16] i.e. the amount of data that a certain algorithm can “hide” until reaching allowable distortion limits. One fundamental difference between watermarking [4] [5] [7] [8] [9] [13] [14] [17] [18] [19] [20] [21] [22] [23] and generic data hiding resides exactly in the main applicability and descriptions o...

This paper presents the review of audio watermarking algorithms based on blind watermark detection techniques which present the watermarking scheme these algorithms use and results obtained. Most of the algorithms focused on improving robustness and imperceptibility, but newly proposed algorithms also focus on other parameters like embedding capacity and security.

Digital watermarking is one of the important techniques to secure digital media files in the domains of data authentication and copyright protection. In the nonblind watermarking systems, the need of the original host file in the watermark recovery operation makes an overhead over the system resources, doubles memory capacity, and doubles communications bandwidth. In this paper, a robust video ...