The Application of Zerotree Wavelet on Image Watermarking

An adaptive watermarking algorithm in wavelet domain is proposed. The whole process was based on integer wavelet transform, code the significant coefficients which have un-scanned in intermediate frequency sub-band, adaptively quantize wavelet coefficients. The watermark is embedded the perceptually important coefficients. Experimental results show that the algorithm proposed has the following characters: adaptability, implemented fast, invisible and robust against attack such as JPEG compression, filter, noise addition and cropping.