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Secret sharing is a means of data protection by splitting it into few noise-like shares. However, transmission of shares (digital information), through radio mobile channel, experience the multipath effect called the fading effect that sometimes leads to severe degradation in the quality of the reconstructed data. This paper proposes a strong threshold (n, n) secret image sharing scheme based on prediction...
This paper presents a new algorithm on wavelet based robust and invisible digital image watermarking for multimedia security. The proposed algorithm has been designed, implemented and verified using MATLAB R2014a simulation for both embedding and extraction of the watermark and the results of which shows significant improvement in performance metrics like PSNR, SSIM, Mean Correlation, MSE than the...
Spread-spectrum communication encompasses a number of signalling techniques in which the transmitted bandwidth is significantly larger than required by the data rate and the transmitted bandwidth is determined by a function independent of the message that is known to both sender and receiver. Originally intended to increase resistance to jamming and lowering the probability of interception, its properties...
An optimized high payload spread spectrum (SS) image watermarking scheme robust against fading-like collusion attack is proposed using genetic algorithms (GA) in multiband (M-band) wavelets. M-band decomposition of host offers advantages of better scale-space tiling and good energy compactness that make watermarking robust against frequency selective fading. On the other hand, GA would determine threshold...
An optimized spread spectrum (SS) image watermarking scheme robust against fading-like collusion attack is proposed using genetic algorithms (GA) in multiband (M-band) wavelet decomposition. M-band decomposition of host offers advantages in better scale-space tiling and good energy compactness. This makes watermarking robust against frequency selective fading. On the other hand, GA would determine...
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