Distributed-Multiresolution-Dct-Svd (D-Mr-Dct-Svd) Watermarking of Rgb Images

Vol.4 No.1

Year: 2010

Issue: Jul-Sep

Title: Distributed-Multiresolution-Dct-Svd (D-Mr-Dct-Svd) Watermarking of Rgb Images   

Author Name: M.L. Srinivas, T. Ramashri   

Synopsis:   

In this paper an image authentication technique that embeds a color watermark into a host color image is proposed. Watermarking is used for copyright protection using Distributed multiresolution discrete cosine transform (D-MR-DCT) and singular value decomposition. The core idea of the proposed scheme is to decompose an image into four frequency sub-bands using D-MR-DCT and then singular values of every sub-band are modified with the singular values of the watermark.