01-11-2016, 04:33 PM
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Introduction
Now a days there is a tremendous increase in computer performance and facilitated with extensive distribution of multimedia data such as images over the internet quite easily.
Publishers, artists, and photographers, however, may be unwilling to distribute pictures over the Internet due to a lack of security, images can be easily duplicated and distributed without the owner’s consent.
So, to achieve these requirements, a hybrid digital image watermarking scheme based on discrete wavelet transform (DWT) and singular value decomposition (SVD) introduced.
Digital Watermarking?
Allows users to embed SPECIAL PATTERN or SOME DATA into digital contents without changing its perceptual quality.
Watermarking is a key process for the PROTECTION of copyright ownership of electronic data.
It is a digital data that can be embedded into all forms of media content, including digital images, audio, video and even certain objects.
Techniques
SVD
DWT
SVD:
Singular value decomposition(SVD) is a linear algebra technique used to solve many mathematical problems.
Any image can be considered as a square matrix without loss of generality. So SVD technique can be applied to any kind of images.
Applications
Content identification and management
Content protection for audio, video and images
Document and image security
Broadcast monitoring
Future scope
In future we will try to improve our proposed algorithm, so that disadvantages of SVD-DWT can overcome
DWT-Based watermarking methods are fast /robust and protect against most forms of manipulation