Title :
Digital Watermarking Technique for Images Based on DWT
Author_Institution :
Dept. of Fire Protection Eng., Chinese People´s Armed Police Forces Acad., Langfang, China
Abstract :
A novel watermarking positioning algorithm is proposed in this paper which uses features of lower frequency sub-band of wavelet coefficient to limit the positions for watermarking embedding. The positions are taken as indexes of points for embedding watermarking and map these positions to medium frequency space to carry watermarking. Detection of watermarking is free of original image and the balance between transparency and robustness are realized.
Keywords :
discrete wavelet transforms; image watermarking; discrete wavelet transform; image digital watermarking technique; medium frequency space; watermarking embedding; watermarking positioning algorithm; Digital images; Image resolution; Robustness; Watermarking; Wavelet coefficients;
Conference_Titel :
Wireless Communications, Networking and Mobile Computing (WiCOM), 2011 7th International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6250-6
DOI :
10.1109/wicom.2011.6040630
