Traditional Digital watermark is robust against compression, but can barely remain the stability to resist geometric attack. In this paper, we advance a watermarking method based on wavelet domain data block which may make up the defection of the traditional methods. It is based on the transformation, rotation and scale invariant of the local linear embedding, embedding the watermark sequence into wavelet domain data block’s locally liner embedding reconstruction weight factor, rather than pixel value or transformation factor. Therefore, the algorithm can remain robust against cropping. As the result of the experiment, the algorithm will not increase the information volume of the watermark sequence, but can improve the robustness against the transformation, scale, rotation attack and can reduce the demand of the original image.
