An Imperceptible and Robust image watermarking using RDWT and SVD in YCbCr color space

This paper proposes Redundant Discrete Wavelet Transform (RDWT) and Singular Value Decomposition (SVD) based an imperceptible and robust image watermarking in YCbCr color space. Luminance and chrominance components are extracted from colored cover image and watermark is embedded into its luminance component. Cover image is break down into four sub-bands by applying 1-level RDWT. LL sub-band singular values are modified using singular values of colored watermark. Peak Signal to Noise Ratio (PSNR), Structural SIMilarity (SSIM) and Normalized Correlation coefficient (NC) parameters are used to evaluate the proposed method's performance. Utilizing numerous test images, the suggested scheme's effectiveness is assessed. Comparison of results with existing techniques is also performed and it is clear from results that performance of proposed scheme is better in terms of PSNR, SSIM and NC.