A new chaotic complex map for robust video watermarking

In this paper, using a new two-dimensional complex map, a secure video watermarking system is presented. Standard analyzes have been performed to analyze a dynamical system to prove the existence of chaos in the proposed map and the results indicate a chaotic behavior in this complex chaotic map. In addition, an efficient algorithm based on IWT, DWT, and CT transforms with the participation of single value decomposition for the embedding and extraction process is introduced. The simulation results showed that the proposed algorithm has good visual quality based on criteria such as PSNR and SSIM. Geometric and non-geometric attacks were also performed on the video obtained by watermarking, and the results showed that the proposed algorithm in many attacks with a value of 1.00 for the NC criterion can be a very robust algorithm against attacks. A correlation-based process for detecting the rotational attack is also presented which makes the rotational geometric attack successfully pass. The comparison of simulation results with other similar algorithms shows that the proposed method performs better than any of these methods in terms of visual quality analysis and attack resistance and can be used as an efficient robust algorithm in applied processes.