Title :
Study on digital image watermark algorithm based on chaos mapping and DWT
Author :
Gu, Zhi-Feng ; Li, Guan-Feng ; Yang, Zong-Xiao
Author_Institution :
Coll. of Electron. Inf. Eng., Henan Univ. of Sci. & Technol., Luoyang, China
Abstract :
In view of the distributing feature of DWT (Discrete Wavelet Transform) coefficients , an watermark algorithm based on DWT and Chaos mapping is represented. The watermark image is first transformed by Logistic mapping to an unmeaning image in the field, and the positions of embedding the secret image are obtained by exploiting the characteristics of the human visual system (HVS). Detecting procedure doesn´t need original host image. The experiment results show that the algorithm has good invisibility, robustness and security to the watermark.
Keywords :
chaos; data privacy; discrete wavelet transforms; image representation; image watermarking; DWT coefficients; HVS; chaos mapping; digital image watermark algorithm; discrete wavelet transform; host image; human visual system; image representation; logistic mapping; secret image embedding; unmeaning image; watermark invisibility; watermark robustness; watermark security; Chaotic communication; Discrete wavelet transforms; Logistics; Robustness; Watermarking; Digital watermark; Human visual system (HVS); Logistic mapping; Wavelet transform;
Conference_Titel :
Advanced Mechatronic Systems (ICAMechS), 2012 International Conference on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4673-1962-1
