Title :
A robust image watermarking based on DWT-QR decomposition
Author :
Lin, Nan ; Shen, Lianjing ; Guo, Xiaofeng ; Zhou, Jun
Author_Institution :
Inf. Eng. Univ. Coll. of Sci., Zhengzhou, China
Abstract :
In this paper, a novel optimal watermarking scheme based DWT and QR decomposition is presented. Before embedding the watermark, information was firstly encrypted to enhance the security and robustness. Then LL subband is blocked 8×8 after DWT transformation. When each of them is QR decomposed, the watermark is embedded in the first row elements of R matrix. The experimental results show that the algorithm has high robustness, invisibility and higher embedding capacity.
Keywords :
discrete wavelet transforms; image watermarking; DWT-QR decomposition; LL subband; discrete wavelet transforms; embedding capacity; image watermarking; watermark embedding; Discrete wavelet transforms; PSNR; D WT; QR Decomposition; Robust; Watermarki;
Conference_Titel :
Communication Software and Networks (ICCSN), 2011 IEEE 3rd International Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-61284-485-5
DOI :
10.1109/ICCSN.2011.6014360
