BCH Coding Watermarking Based on Discrete Wavelet Transform

Abstract

Abstract. The traditional watermark is replaced with a novel coding watermarking scheme, which is focusing on BCH error control coding for increasing the security of the digital products. The pretreatment of watermark image is to be done first of all; iris image is transferred into the binary sequence. And then the binary sequence is to be on discrete cosine transform, the value of the discrete cosine is encoded to BCH error control coding. The BCH codes are embedded into the coefficients of discrete wavelet-transformed host image. Many results show that proposed method can extract the watermark effectively and illustrate its security and robustness.