An Optimized Robust and Secure Digital Image Watermarking Technique Based on Modified Periodic Plus Smooth Decomposition
Journal Title: Computer Reviews Journal - Year 2019, Vol 3, Issue 0
Abstract
An optimized Robust and Secure Digital Image Watermarking technique based on modified Periodic Plus Smooth Decomposition (PPSD) is proposed. This proposed technique based on Periodic Plus Smooth Decomposition (PPSD), Discrete Wavelet Transform (DWT) and Singular Value Decomposition (SVD). The host and watermark image is decomposed into a smooth and periodic component. The smooth component decomposed into its frequency sub-bands through 2nd level DWT. Later by SVD, the watermark singular matrix is combined with the singular matrix of the transformed image. The watermarked image is obtained by using the inverse of DWT. Through the proposed technique we improved the different parameters like PSNR is 92.9075, SSIM watermarked 0.8039, SSIM extracted 0.9924, NCC 0.9929. The experimental result displays that the proposed technique is imperceptible and robust to different attacks. This technique combines the advantages like a false positive problem that is solved by the digital signature. Digital signature gives authentication before extracting watermarks.
Authors and Affiliations
khushi yadav, Sunil Joshi, Navneet Agrawal
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