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In this paper, we propose two techniques to improve the watermark extraction performance and accuracy. The First one is implemented in the embedding process by using a multiple duplicated watermark signals embedding method. The second technique is archived in the retrieval process by using adaptive retrieval algorithm selection to extract the watermark signal. The accuracy of the extracted watermark can be improved by applying these two concepts together. Sets of experiment are fulfilled todoi:10.7763/ijfcc.2013.v2.112 fatcat:wj5mdwefaraptdhg2s5nawknia