The Research Of Watermarking Based On Multiwavelet And Genetics Algorithm

The paper has mainly done these aspects works as follow : An improved hybrid cascaded genetic arithmetic is proposed. The shortcoming of slow convergence for SAGA and less capability of partial search of CGA is overcome. OBSA multiwavelet pre-filter based on genetic algorithms is proposed. In this method, the fitness functions were selected for the different purposes of image analysis and synthesis, which were used to construct the pre_filters of images for OBSA multiwavelet transform(MWT) in proper constrained condition. Two approachs to blind digital watermarking based on the DMWT and genetic algorithms are presented. One is "Even and odd algorithms", and the other is "Replacement algorithms". How to selected multiwavwlet for "replacement algorithm"embedding watermarking is discussed..