Normalization-based multi-bit image watermarking with FEC resistant to affine transformation

A modified image normalization method and a new multi-bit watermarking embedding algorithm with FEC are proposed in this paper based on the scheme resistant to affine transformation attacks proposed by Ping Dong (June 2002). Image normalization process is simplified and the disadvantage of low imperceptibility in Ping Dong (June 2002) is overcome. Experiments indicate that the modified scheme proposed in tins paper is more robust to affine transformation, and has larger embedding capacity and better image quality.