Research on Multiple Blind Watermarking Algorithm Based on Double Scrambling

Abstract

Embedding only one kind of watermarking in a digital product has not effectively prevented forgery of digital works and identified intellectual property of digital media. Based on the good confidentiality of the Zigzag-Logistic double scrambling algorithm, this paper proposes a multi-blind watermarking algorithm for color images, which combines spatial domain and DCT domain. The algorithm performs block DCT on the R, G and B components of the color image, and then the robust watermarking after double scrambling is embedded in the intermediate frequency portion of each component. These watermarks are used to complete the copyright authentication and additional information detection. The experimental results show that the proposed algorithm is robust to white noise attacks, Gaussian low-pass filtering and JPEG attacks, and the watermarking information is not easily cracked.