A New Robust Blind Copyright Protection Scheme Based on Visual Cryptography and Steerable Pyramid

Abstract

In this paper, we proposed a novel blind digital image copyright protection scheme based on Steerable pyramid transform (SPT) and visual cryptography (VC). Unlike traditional watermarking schemes, the proposed method does not alter the original image by embedding the watermark image. Steerable pyramid transform is performed on the original image, and the low sub-band is selected. The watermark image is divided into two random looking images, called private and public shares using the visual secret sharing scheme and the selected low sub-band features. To reveal the watermark image, the two shares are stacked together while using each share separately reveals no information about the watermark image. A series of attacking experiments are performed on the original image to test the robustness of the proposed method. The experimental results show excellent visual imperceptibility and robustness against a variety of attacks.