Color image watermarking algorithm based on human visnal system
Decun Dong · Journal of the University of Shanghai for Science and Technology · 2010
The luminance Y in YIQ mode of the host image was decomposed into 3-level wavelets by discrete wavelet tranfform,the watermark information was devided into several different frequency parts,and pseudo-random sequence xor was used with each bit of the watermark information encrypted to embed the spatial domain information with different weight into the frequency domain of host image according to the human visual characteristics.Experimental results show that the color watermark embedded with the proposed method is of invisibility and security,and is robust against the common image processing such as filtering,cropping,noise addition,compression and so on.