Robust watermarking based on DWT SVD
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by
Anumol Joseph, K. Anusudha
2013
Abstract
Digital information revolution has brought about many advantages and new
issues. The protection of ownership and the prevention of unauthorized
manipulation of digital audio, image, and video materials has become an
important concern due to the ease of editing and perfect reproduction.
Watermarking is identified as a major means to achieve copyright protection. It
is a branch of information hiding which is used to hide proprietary information
in digital media like photographs, digital music, digital video etc. In this
paper, a new image watermarking algorithm that is robust against various
attacks is presented. DWT (Discrete Wavelet Transform) and SVD (Singular Value
Decomposition) have been used to embed two watermarks in the HL and LH bands of
the host image. Simulation evaluation demonstrates that the proposed technique
withstand various attacks.
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