Date Added: Oct 2011
With the explosive growth of internet technology robust methods are being developed to protect the proprietary rights of the multimedia. In this paper, an invisible watermarking technique is proposed, to embed multiple binary watermarks into digital images based on the concept of Visual Cryptography (VC). Unlike traditional watermarking schemes, the watermarks are not embedded directly into the digital image. Instead, the proposed method constructs independent Master Shares for the authors according to the original image and the corresponding watermarks. When piracy happens, the authors can show their shares to reveal the watermarks.