TY - GEN
T1 - An improved wavelet-tree watermarking scheme
AU - Lin, Chun Yu
AU - Su, Chung Yen
PY - 2012
Y1 - 2012
N2 - This paper presents an improved wavelet-tree watermarking scheme for copyright protection. We decompose an image into four-level subbands and group the subband coefficients into many wavelet-trees. The N-bit watermark is embedded into the first N shuffled trees. An improved scheme based on changing only one coefficient of each tree is proposed to embed a watermark bit. Compared with the previous wavelet-tree watermarking scheme, the proposed scheme not only can improve the image quality but also can speed up the execution of watermark embedding. Experimental results are shown to demonstrate the effectiveness of the proposed scheme.
AB - This paper presents an improved wavelet-tree watermarking scheme for copyright protection. We decompose an image into four-level subbands and group the subband coefficients into many wavelet-trees. The N-bit watermark is embedded into the first N shuffled trees. An improved scheme based on changing only one coefficient of each tree is proposed to embed a watermark bit. Compared with the previous wavelet-tree watermarking scheme, the proposed scheme not only can improve the image quality but also can speed up the execution of watermark embedding. Experimental results are shown to demonstrate the effectiveness of the proposed scheme.
KW - copyright protection
KW - discrete wavelet tramsform
KW - watermarking
KW - wavelet-tree
UR - http://www.scopus.com/inward/record.url?scp=84875682668&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84875682668&partnerID=8YFLogxK
U2 - 10.1109/ISPACS.2012.6473495
DO - 10.1109/ISPACS.2012.6473495
M3 - Conference contribution
AN - SCOPUS:84875682668
SN - 9781467350815
T3 - ISPACS 2012 - IEEE International Symposium on Intelligent Signal Processing and Communications Systems
SP - 275
EP - 279
BT - ISPACS 2012 - IEEE International Symposium on Intelligent Signal Processing and Communications Systems
T2 - 20th IEEE International Symposium on Intelligent Signal Processing and Communications Systems, ISPACS 2012
Y2 - 4 November 2012 through 7 November 2012
ER -