A novel approach for digital image watermarking using 5-DWT-SVD and stream cipher encryption with different attacks
Smita Pandey, Rohit Gupta · 2016
Digital image watermarking (DIW) is one of the ways that is resilient to numerous attacks on image based digital media where information authentication is complete through embedding a watermark in image characteristics. This work incorporates a novel approach for DIW using five level discrete wavelet transform (5DWT)-singular value decomposition (SVD) and stream cipher (SP) encryption with different attacks. Extensive experiments present that proposed watermarking algorithmshave high robustness and a good imperceptibility to numeroususual image processing attacks, such as top-hat filtering, Gaussian blurring, Gaussian blur with noise and image adjustment attack. To evaluate the efficiency of the algorithm and the extracted watermark image quality, we used widely known image quality function measurements, such as signal-to-noise ratio (SNR) and root mean square error (RMSE). Results indicate the excellent invisibility of the extracted watermark image (SNR = 38.35dB), as well as exceptional watermark extraction (RMSE = 3.09).