A novel reversible visible watermarking technique for images using Noise Sensitive Region Based Watermark Embedding (NSRBWE) approach

摘要

The enhanced data processing technologies have made the manipulation and computation of digital data & images easier. This has created a need for the copyright protection of digital content. In this paper a novel reversible visible watermarking algorithm is proposed to cater the needs of copyright protection and to resume the original image data processing at the receiver's end. This proposed algorithm uses a noise sensitive region based watermarking embedding (NSRBWE) technique to embed the watermark W in the given region R of Image I. To extract the original image from the visible watermarked image it is necessary to remove the full watermark. We preserve the information of altered pixels of the region R in the rest of image I - R. Our algorithm can fully remove the watermark from the visible watermarked image. It uses a Secret Key K to reconstruct the altered pixels value. In addition, only users with correct secret key K can restore the original image.