Title :
Fast digital watermarking algorithm based on cellular automata and multi-level texture synthesis
Author :
Zhang, Yuyu ; Wang, Guoxi ; Cai, Kehe ; Liu, Lu
Author_Institution :
Comput. Sch., Wuhan Univ., Wuhan, China
Abstract :
In this paper, we present a novel technique for quickly generating large-scale digital watermarks. Generally, digital watermark can be embedded in any copyright image whose size is not larger than it. But nowadays, more and more high-resolution pictures call for larger and larger watermark templates, while most traditional watermarking algorithms work slowly on templates of large scale. To solve this problem, we firstly produce a pseudo-random number sequence, using the Logistic Function and then convert it to a binary 2D image. Afterwards, cellular automata are used to turn this image into an elementary watermark template. We regard this chaotic featured watermark as an input texture, and apply a multi-level texture synthesis method to it. In this way, large-scale watermarks can be obtained at acceptable cost of time.
Keywords :
cellular automata; image coding; image resolution; image texture; image watermarking; random sequences; binary 2D image; cellular automata; copyright image; elementary watermark template; fast digital watermarking algorithm; image resolution; logistic function; multilevel texture synthesis method; pseudorandom number sequence; Discrete cosine transforms; Logistics; Pixel; Robustness; Signal processing algorithms; Watermarking; cellular automata; fast algorithm; large-scale digital watermark; texture synthesis;
Conference_Titel :
Computer Science and Service System (CSSS), 2011 International Conference on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-9762-1
DOI :
10.1109/CSSS.2011.5972057