A digital watermarking algorithm based on quadtree fractal coding
Shaoxia Chen · Journal of Shaanxi Institute of Technology · 2003
The traditional method of using fractal coding to embed watermarking often took a long time, which also strongly influenced the quality of images. This paper proposes a watermarking algorithm based on quadtree fractal coding, which is to search for the optimized matched domain blocks in different regions and to embed the watermarking. The results of the experiment show that the new method greatly improves the efficiency of time, quality of image and robustness.