Intelligent Watermarking Scheme Employing the Concepts of Block Based Singular Value Decomposition and Firefly Algorithm
Musrrat Ali, Chang Wook Ahn, Millie Pant · Gate to Computer Science and Research · 2016
Digital image watermarking is the process of concealing secret information in a digital image for protecting its rightful ownership.Most of the existing block based singular value decomposition (SVD) digital watermarking schemes are not robust to geometric distortions, even if for some special distortions, such as multiples of 90 • rotation of integers and image flipping, which change the location of pixels but have no effect on the value of the image.Therefore, to overcome the problems mentioned here, this chapter proposes a novel image watermarking scheme by redistributing the image and applying some normalization operators.Subsequently, this image is segmented into non-overlapping blocks and SVD is applied to each block to get the largest singular