TY - GEN
T1 - Adaptive chaotic watermarks recovering without referring to the original image
AU - Li, Cuihua
AU - Qu, Yanyun
AU - Zheng, Nanning
AU - Ye, Congying
PY - 2004
Y1 - 2004
N2 - The correlation properties of zero-mean chaotic sequences generated by the Tent map in the discrete time domain are discussed in this paper. It is found that the chaotic sequences are nearly orthogonal to both the standard images and their DCT coefficients. The chaotic sequence has a broadband spectrum and the auto-correlation of these sequences is a delta-function and their cross-correlation is approximately zero. As an application, a chaotic watermarking scheme for copyright protection of digital images is presented. In this scheme, the watermark signal generated by the chaotic system provides sufficient watermark complexity. Watermark detection, which can be reliably extracted without referring to the original image, is performed by the correlation of the DCT coefficients of the watermarked image with the chaotic sequences. The experimental results show the robustness of the proposed scheme under JPEG compression, filtering, twirling, cropping and additive Gaussian noise.
AB - The correlation properties of zero-mean chaotic sequences generated by the Tent map in the discrete time domain are discussed in this paper. It is found that the chaotic sequences are nearly orthogonal to both the standard images and their DCT coefficients. The chaotic sequence has a broadband spectrum and the auto-correlation of these sequences is a delta-function and their cross-correlation is approximately zero. As an application, a chaotic watermarking scheme for copyright protection of digital images is presented. In this scheme, the watermark signal generated by the chaotic system provides sufficient watermark complexity. Watermark detection, which can be reliably extracted without referring to the original image, is performed by the correlation of the DCT coefficients of the watermarked image with the chaotic sequences. The experimental results show the robustness of the proposed scheme under JPEG compression, filtering, twirling, cropping and additive Gaussian noise.
UR - https://www.scopus.com/pages/publications/4344710136
U2 - 10.1142/9789812702654_0124
DO - 10.1142/9789812702654_0124
M3 - 会议稿件
AN - SCOPUS:4344710136
SN - 981238961X
SN - 9789812389619
T3 - Proceedings of the International Computer Congress 2004 on Wavelet Analysis and its Applications, and Active Media Technology
SP - 845
EP - 850
BT - Proceedings of the International Computer Congress 2004 on Wavelet Analysis and its Applications, and Active Media Technology
PB - World Scientific Publishing Co. Pte. Ltd.
T2 - Proceedings of the International Computer Congress 2004 on Wavelet Analysis and its Applications, and Active Media Technology
Y2 - 28 May 2004 through 30 May 2004
ER -