Method and arrangement for embedding a watermark in an information signal

摘要

The invention relates to a method of embedding a watermark W in an information signal P, to a corresponding arrangement for embedding a watermark W in an information signal P, to an information signal P with an embedded watermark W and to a storage medium 50 having stored thereon an information signal P with an embedded watermark W. This method is carried out by determining local weight factors lambd(P) for said watermark based on data of said information signal P, wherein said local weight factors lambd(P) are determined such that the embedded watermark W is rendered substantially imperceptible when embedded in said information signal. The watermark W is locally weighted using said determined local weight factors lambd(P). Then said locally weighted watermark is embedded in said information signal P. When determining said local weight factors lambd(P) of said watermark W temporal data of said information signal are taken into account.