Thesis On Digital Watermarking

For harmless and protected transmission of information, digital watermarking can be utilized. more With rapid development, seed technology, secure transmission of information is very intricate.For harmless and protected transmission of information, digital watermarking can be utilized.In order to measure performance of the proposed scheme Normalized Correlation and Peak Signal to Noise Ratio are chosen.

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Aiming to fill the gap of the stationary scaling factor and embedding locations, the work proposed in this paper adapts genetic algorithm to find the optimality of these issues that will enhance both of watermarking capacity and imperceptibility in color images.

To increase security, the suggested system encodes the watermarks using 2-D Walsh transform.

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

In this paper, a phase congruency based digital colour image watermarking algorithm is proposed, which provides a higher degree of robustness, and excellent imperceptibility.

Here, phase congruency has been used to detect the feature regions of the host image, and then the watermark has been infused into it usinga novel technique called adaptive k-α blending.

The coefficients of the k-α blending(k & α) are selected adaptively based on the phase congruency feature map of thehost image.

While the chaotic maps provide perfect watermarking security, the proposed scheme is also intended to achieve robustness.

With rapid development, seed technology, secure transmission of information is very intricate.

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