DocumentCode :
598993
Title :
A novel watermarking schem using directionlet
Author :
Wenjuan He ; Jinghong Duan ; Jing Liu ; Jingyi Wang
Author_Institution :
Fac. of Comput. Sci. & Eng, Xi´an Univ. of Technol., Xi´an, China
fYear :
2012
fDate :
16-18 Oct. 2012
Firstpage :
557
Lastpage :
561
Abstract :
In this paper, a new robust digital image watermarking algorithm is proposed in Directionlet transform domain. Directionlet transform (DT) is able to capture the directional edges and contours superior to many multi-resolution geometric analysis (MGA) tools. At first, sample the original image with the generator matrix; Then, decompose each coset into the subbands with directionlet transform. For embedding watermark bits, We select a M×M coefficients from the middle frequency domain of all the cosets of the lattice, as many as bits of the binary watermark image. The experimental results show that the proposed algorithm has a good resistance against to common attacks,moreover it outperforms previous methods in the most situations.
Keywords :
frequency-domain analysis; geometry; image resolution; image watermarking; matrix algebra; transforms; DT; MGA tools; binary watermark image; digital image watermarking algorithm; directional edges; directionlet transform domain; embedding watermark bits; generator matrix; middle frequency domain; multiresolution geometric analysis tools; Algorithm design and analysis; Generators; Lattices; Robustness; Signal processing algorithms; Transforms; Watermarking; Directionlet transform; generator matrix; image watermarking; multi-resolution geometric analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Image and Signal Processing (CISP), 2012 5th International Congress on
Conference_Location :
Chongqing
Print_ISBN :
978-1-4673-0965-3
Type :
conf
DOI :
10.1109/CISP.2012.6469921
Filename :
6469921
Link To Document :
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