Title :
A Robust Chaos-Based DCT-Domain Watermarking Algorithm
Author :
Yantao, Zhao ; Yunfei, Ma ; Zhiquan, Li
Author_Institution :
Inst. of Electr. Eng., Yanshan Univ., Qinhuangdao
Abstract :
A chaos-based watermarking algorithm in DCT-domain for still images is proposed, and the algorithm is a blind watermarking scheme. Firstly, the watermark is scrambled by one chaos map with keys; Secondly, the scrambled watermark is embedded into the least signification bits (LSB) of the quantized DCT coefficients, which the watermark embedded into are determined by another map with another keys. Only the ones who knows the keys can extract the watermark from the stego-image, so it is security. experimental results have confirmed that this new scheme has high fidelity and is highly robust against geometric attacks and signal processing operations.
Keywords :
chaos; discrete cosine transforms; image coding; watermarking; DCT-domain watermarking algorithm; blind watermarking scheme; chaos-based watermarking algorithm; geometric attacks; least signification bits; quantized DCT coefficients; scrambled watermark; signal processing operations; stegoimage; still images; Chaos; Chaotic communication; Discrete cosine transforms; Logistics; Protection; Robustness; Security; Signal processing algorithms; Software algorithms; Watermarking; DCT; chaos; watermarking; watermarking attacks; watermarking security;
Conference_Titel :
Computer Science and Software Engineering, 2008 International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-0-7695-3336-0
DOI :
10.1109/CSSE.2008.332
