Title :
A Robust Chaos-Based Watermarking for Copyright Protection
Author :
Li, Shu-Quan ; Wu, Yue
Author_Institution :
Sch. of Comput. Sci. & Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
In this paper, a novel technique for embedding watermarks into a host image on the frequency domain is proposed. Due to good randomness and easy reproducibility of chaos, the watermark is permuted by the chaotic sequence, then a number of reference points are selected in the low frequency bands of the DCT domain based on the chaotic sequences. Moreover, the watermark is self-extractable and the algorithm is simple. Experimental results show that the algorithm proposed in the paper is effective and robust to common signal processing operations and some geometric distortions,such as cropping.Especially,it receives high robustness under JPEG lossy compression and signal enhancement operations, such as sharpening.
Keywords :
data compression; discrete cosine transforms; image coding; image sequences; watermarking; DCT domain; JPEG lossy compression; chaotic sequence; copyright protection; cropping; discrete cosine transform; frequency domain; geometric distortion; robust chaos-based watermarking; sharpening; signal enhancement operation; signal processing; Chaos; Copyright protection; Discrete cosine transforms; Distortion; Frequency domain analysis; Reproducibility of results; Robustness; Signal processing algorithms; Transform coding; Watermarking;
Conference_Titel :
Biomedical Engineering and Computer Science (ICBECS), 2010 International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-5315-3
DOI :
10.1109/ICBECS.2010.5462439
