Image watermarking using chaotic map and DNA coding

In recent years, image watermarking has attracted considerable research interest, especially jointing with chaotic map and DNA sequences. In this work, we propose a novel architecture of image watermarking using chaotic map and DNA coding. Firstly, two logistic chaotic maps are used to structure a secure architecture with embedding watermarking into the LSB (least significant bit) of cover image. Analyzing numerical experimental results and comparing with previous works show that the proposed architecture possesses higher security than previous works. Then the method of DNA coding is jointed into the architecture to improve the ER (embedding rate). It not only significantly increases the ER, but also accelerates the development of DNA-based watermarking. The improved architecture is suitable for protecting the copyright of cover image in DNA-based information security.