Watermarking insert and analysis method of robust motion based on multi-resolution analysis

摘要

PURPOSE: A method for inserting and analyzing a watermark based on multi-resolution analysis of operation data is provided to easily extract the watermark to perform analysis about illegal copy of watermarked operation data. CONSTITUTION: A watermark to be inserted into operation signals constructing operation data of animation is generated(S100). The watermark is inserted in a manner that the watermark is substituted by coefficients of displacement map(S110). Suspect operation signals with multi-resolution that construct suspect data to be analyzed are arranged to accord with the original operation signals(S120). A watermark is extracted from the arranged suspect operation signals(S130). The watermark of the original operation signals is compared with the watermark of the suspect operation signals(S140).