Robust Image Watermarking Using Discrete Wavelet Transform
Abstract
Problem statement: Digital Watermarking have gained popularity in recent years as a means of protecting multimedia data from illegal copying and unlawful reproduction. It is mainly used for copyright protection of multimedia data. Approach: In this study an image watermarking algorithm which is blind (do not require the presence of host image for detection) and robust is proposed. Results: The proposed watermarking scheme embeds the watermark in the Discrete Wavelet Transform (DWT) domain. The watermark is a binary logo and is embedded in the subband of the wavelet decomposition. Conclusion: This watermarking scheme is robust to several attacks like JPEG compression, rotation, Gaussian filtering, median filtering, cropping, scaling, sharpening, Gaussian noise and salt and pepper noise.
DOI: https://doi.org/10.3844/jcssp.2011.1.5
Copyright: © 2011 Dhandapani Samiappan and Krishnan Ammasi. This is an open access article distributed under the terms of the
Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Keywords
- Digital watermarking
- robustness
- Discrete Wavelet Transform (DWT)
- attacks
- Least Significant Bits (LSB)
- copyright protection
- approximation
- horizontal
- Human Visual System (HVS)