An invisible watermarking scheme based on Modified Fast Haar Wavelet Transform and RSGWPT

Image-watermarking aims at embedding information into cover media to prove ownership. This aim is achieved by embedding the copyright information into actual information in such a manner that embedded information later on extracted to provide the authenticity of multimedia contents[1]. A robust blind image-watermarking algorithm is proposed. The proposed algorithm is based on both the Modified Fast Haar Wavelet Transform and the Redundant Second Generation Wavelet Packet Transform. The idea behind the proposed algorithm is to decompose the cover image using Modified Fast Haar Wavelet Transform and Redundant Second Generation Wavelet Packet Transform [14] according to the size of the watermark. The watermark is embedded in the fine-scale bands of the Redundant Second Generation Wavelet Packet Transform of the fine-scale bands of the last Modified Fast Haar Wavelet Transform decomposition level of the host image.