Author(s)

Wenjing Sun

Corresponding Author

Wenjing Sun

Abstract

A blind watermarking algorithm based on the replacement of intermediate frequency coefficients in discrete cosine transform domain (DCT) is introduced. The adaptive embedding method of digital watermarking is studied with this algorithm. The proposed blind watermarking algorithm for replacing IF coefficients in DCT domain not only breaks through the traditional watermarking embedding formulas, such as additive algorithm, but also solves the problem that the extracted watermarking contains DCT coefficients of the original image, thus affecting the detection accuracy, and gives the verification. The algorithm combines the masking property of HVS, so that the embedding energy of watermark information has adaptive characteristics, which ensures that the embedded watermark is robust to some common image processing operations under the premise of invisibility. The experimental results verify the effectiveness of the proposed algorithm.

Keywords

Image acquisition; Digital watermarking; Blind detection; IF