一种新颖的图像水印嵌入方法

An novel embedding method for image watermark based on wavelet transform is proposed. With this method ,the value of each pels is modified directly,so that a bit of watermark information is embedded in every pel-s. Before emeded,the original image is decomposed by wavelet transform,and then,a correlation mask for every imagepels is confirmed by the characteristic and tree structure ralation of the wavelet coefficients. At last, the modified val-ue of every pels is controlled by its corresponding mask for watermark information embedded. The experimental re-sults show that the embedded digital watermarks with this proposed method are invisible and robust enough againstthe commonly used image processing techniques.

An Novel Method of Emdedding for Image Watermark

An novel embedding method for image watermark based on wavelet transform is proposed. With this method ,the value of each pels is modified directly ,so that a bit of watermark information is embedded in every pels. Before emeded.the original image is decomposed by wavelet transform,and then,a correlation mask for every image pels is confirmed by the characteristic and tree structure ralation of the wavelet coefficients. At last, the modified value of every pels is controlled by its corresponding mask for watermark information embedded . The experimental results show that the embedded digital watermarks with this proposed method are invisible and robust enough against the commonly used image processing techniques.