An Improved Performance of Watermarking In DWT Domain Using SVD
Ramandeep Kaur, Harpal Singh · 2015
In this paper, the concept of hybridizing the transforms is used in order to enhance the performance of watermarking method. Apart from this, the original image is first performed with DCT compression operation before decomposition of image which reduces the mean square error (MSE) and hence increases the quality of watermarked image. The performance of proposed DWT-SVD based methods is evaluated both quantitatively as well as qualitatively. For quantitative evaluation, the metrics like: peak signal to noise ratio (PSNR) by con- sidering human visual system and correlation coefficient (CC) are computed. The results indicate that there is an enhancement in the quality of watermarked image by reducing the MSE. Robustness of the method is also tested by performing various attacks on the watermarked image.