A fragile watermarking scheme for image authentication using wavelet transform

Abstract

The modification of digital content becomes easier owing to the technology development. The need of authenticating digital content is increasing. Different fragile watermarking methods have been proposed for image authentication. In some applications low complexity algorithm is required, such as real-time and video processing applications. We propose in this paper, a fragile watermarking scheme for image authentication using Faber Schauder Discrete Wavelet Transform (FSDWT) and Singular Value decomposition (SVD) where the data to be embedded is a logo. The Watermark was generated by applying XOR operation between the logo’s bits and the bits of dominant blocks singular values of the image to authenticate. These dominant blocks are obtained by applying FSDWT to that image. Any image modification will result in significant change of the dominant blocks singular values, which helps the watermarking scheme to detect the authenticity of the image. Furthermore, FSDWT is composed of simple operations, hence, the algorithm has a low complexity.