ROBUST WATERMARKING OF RELATIONAL DATABASES WITH ONTOLOGY-GUIDED DISTORTION CONTROL

Jayavani, Kiruthiga, Purushothaman
2016 unpublished
A robust and secure technique is required to protect multimedia data as it can be easily produced as illegal copies. Digital watermarking is used for Intellectual Property Rights protection and authentication. In this paper, a lossless watermarking scheme based on Integer wavelet transform (IWT) and singular value decomposition (SVD) is implemented. The watermark image is embedded on the elements of singular values of the low-low (LL) Sub band of original image. The Integer Wavelet Transform is
more » ... implemented based on lifting scheme which is computationally efficient than Discrete Wavelet Transform. The watermark image is extracted which is highly correlated with the original watermark image. The proposed algorithm is robust and authenticated under different attacks.
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