The digital watermarking
algorithms based on the type of host medium are divided into image watermarking
, video watermarking
, audio watermarking
and text watermarking
It is evident that both encryption and digital watermarking
are complementing technologies and are required as a complete security solution for multimedia data.
algorithms modify the contents of the digital medium to be protected by embedding a watermark.
The above watermarking
requirements are conflicting with each other.
Corel case is not struck down, fragile watermarking
may be the only way to ensure that uncontrolled use of digital files does not result in a proliferation of inaccurate and unauthentic images on the World Wide Web.
We use several parameters for categorizing watermarking
With the support of MusicTrace's Watermarking
CoreMedia emphasizes its leading position for interoperable, people-centric content technology", said Willms Buhse, Executive Director CoreMedia.
In this paper, we propose a non-blind, imperceptible and robust watermarking
technique based on cascading two powerful mathematical transforms; the Discrete Wavelet Transform (DWT), and the Singular Value Decomposition (SVD).
On the other hand, understanding the limitations and inadequacies of watermarking
schemes paves the way toward engineering more comprehensive and effective solutions in the long run and, in the process, ensures that digital watermarks are available for years to come.
The paper describes how embedding, detecting and responding to watermarks can work to identify digitally distributed content in order to enable effective monitoring, media serialization and management of copyrighted content," added Digital Watermarking
Alliance Chairman Reed Stager.
9] presented a dual watermarking
scheme which is the combination of visible and invisible watermarking
differs from digital fingerprinting, which produces a "meta" file that describes the contents of the source file.