An Algorithm of Digital Image Watermarking Based on Turbo Code and Particle Swarm Optimization
Yong Qi Wang, Hui Zhang · Applied Mechanics and Materials · 2014
To protect the copyright information of digital images, this paper presents a combination of Particle Swarm Optimization and turbo code of the image watermarking algorithm. Firstly, in order to enhance the security of watermark information, binary image is encrypted by Aronld transform and error correction coding technology. Based on the block of the host image, according to human visual properties, make discrete cosine transform to the block with larger texture complexity, and embed the watermark information in the low frequency coefficients of discrete cosine transform with the embedding intensity of watermarking searched by PSO. The simulation results show that the algorithm not only improves the security of the watermarking, but also has better robustness and invisibility of the watermarking.