A Novel Multiple Watermark With ROI Recovery

摘要

A novel multiple watermarking scheme was proposed, which could embed the reversible watermark in ROI (region of interest) by improving the Ni's algorithm, and the robust watermark in non-ROI by quantizing the low frequency coefficients. The watermarks can simultaneously achieve copyright protection and content authentication, and the ROI of the watermarked image can be recovered completely if it isn't attacked. At the same time, the multipurpose watermarks are extracted in a blind manner without requiring the original image. The experimental results illustrate that the pure payload of the proposed reversible watermarking algorithm is higher 10 percent than Ni's scheme, and the robust watermark can endure common image attacks.