Abstract
Two techniques, namely image watermarking based on magic square (MST) and Image watermarking based on magic square and ridgelet transform (MSRTT), are discussed in this chapter. In the MST the watermark image is resized through the magic square procedure and is embedded into the color cover image. In MSRTT the resized watermark is transformed by ridgelet transformation. The color cover image is also transformed by the ridgelet transformation to obtain cells consisting of displacement and angle. The displacement values of watermark cells are added to cover image displacement values and the watermarked image generated. The results indicate that the embedding and extraction procedures of MSRTT are superior to MST. The regeneration of watermark image is satisfactory, but noisy.
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Rao, C.R.S., Prasad, M.V.N.K. (2016). Color Image Watermarking Techniques Based on Magic Square and Ridgelets. In: Digital Watermarking Techniques in Curvelet and Ridgelet Domain. SpringerBriefs in Computer Science. Springer, Cham. https://doi.org/10.1007/978-3-319-32951-2_3
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DOI: https://doi.org/10.1007/978-3-319-32951-2_3
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