APPLICATION OF DATABASE WATERMARKING DIGITAL IMAGES

Abstract

With the tremendous growth in internet technologies and its usage, Digital Watermarking has been widely applied to multimedia documents for the purpose of ownership protection and hiding information. Digital watermarking has emerged as a feasible solution to provide protection from copyright, detection of tampering, traitor tracing. But robustness is a big challenge due easily available multimedia manipulation tools. Here, we present an effective watermarking technique for digital images that is robust against various attacks. We present an approach which embeds a watermark into the image pixels. To embed the watermark the original image is modified slightly by the embedding algorithm to obtain the final watermarked image. This modification cannot be detected by human eye. The proposed system controls embedding and extracting of watermark according to the key and message digest algorithm. Watermark cannot be detected by those who do not possess the key, or do not have access to it. The proposed approach is application of watermarking technique used for databases previously.