A Multitype Watermark Scheme

The characteristic and the difficulties in the implementation of multitype watermarks are discussed. Based on the discussion, a multitype watermark scheme is proposed, in which wavelet coefficients are split into blocks. With every type of watermarks normalized, the approach customizes embedding respectively for each type of watermarks. Seven watermarks of 3 types are embedded at one time. Finally, simulations prove the feasibility of the proposed scheme.