Abstract: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.