Image Information Hiding Using Second Order Biorthogonal Wavelets

Image watermarking techniques have been widely studied since the need for copyright protection. In this paper, we present a method for image watermarking using the biorthogonal wavelet transform. The method is based on decomposing an image using the discrete wavelet transform (DWT), and then embedding a watermark in the most significant coefficients of the transform. Biorthogonal wavelets have the property of perfect reconstruction and smoothness (vanishing points). The method proved its robustness against several attacks.