Thesis On Digital Watermarking

Thesis On Digital Watermarking-75
more—Security of a watermark refers to its resistance to unauthorized detecting and decoding, while watermark robustness refers to the watermark's resistance against common processing.Many watermarking schemes emphasize robustness more than security.From rigorous testing, results indicate that our approach is robust againstvarious geometric, non-geometric, and combined attacks.—Security of a watermark refers to its resistance to unauthorized detecting and decoding, while watermark robustness refers to the watermark's resistance against common processing.

more—Security of a watermark refers to its resistance to unauthorized detecting and decoding, while watermark robustness refers to the watermark's resistance against common processing.Many watermarking schemes emphasize robustness more than security.From rigorous testing, results indicate that our approach is robust againstvarious geometric, non-geometric, and combined attacks.—Security of a watermark refers to its resistance to unauthorized detecting and decoding, while watermark robustness refers to the watermark's resistance against common processing.

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With digital watermarking, we can impose ownership and copyright information inside...

more The increasing distribution of digital media over the Internet, and the simplicity of the digital systems have left the contents in the web vulnerable.

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Different types of image watermarking schemes have been proposed over the years to come up with a more robust image watermarking algorithm.

This paper presents a novel digital image watermarking scheme for medical image. more Different types of image watermarking schemes have been proposed over the years to come up with a more robust image watermarking algorithm.

RGB cover image is fist decomposed into R, G, B channels, then Discrete Wavelet Transform (DCT) is applied on R channel, Discrete Cosine Transform (DCT) on G channel and List Significant Bit (LSB) on B channel, Medical image is processed with Arnold Scrambling before being embedded.

With combination of conventional and widely used watermarking algorithms such as LSB, DWT and DCT and application of Arnold scrambling technique the new watermarking scheme proves to be more robust as it is evident from the experimental result.

In order to measure performance of the proposed scheme Normalized Correlation and Peak Signal to Noise Ratio are chosen.

The increasing distribution of digital media over the Internet, and the simplicity of the digital systems have left the contents in the web vulnerable.

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