Adaptive SVD-based wavelet domain watermarking scheme for color image authentication
Wenbo Liu · Computer Engineering and Applications Journal · 2007
In this paper,a new semi-fragile watermarking scheme for color image authentication is proposed,in which the watermark is embedded in the SVs(Singular Values)of the Dlocks within wavelet subbands by an adaptive quantized method.DWT is performed on the extracted and linearly modified luminance information matrix based on the features of YIQ.The two-dimensional transformed network generated by the low-dimensional Tent chaotic map is used to encrypt the embedded watermark.Only one initial value is required,which improves the simpleness of the scheme.The results of the experiment show that the proposed scheme is robust to JPEG compression but extremely sensitive to malicious manipulations.