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Information Entropy Used in Digital Watermarking

Information entropy is often applied as one of masking effect in digital watermarking system. At present, some scholars have used entropy masking to improve the performance of their watermarking algorithm. This paper mainly introduces the entropy masking model in three different domains, and gives experiment report about utilizing spatial domain, DCT domain, and DWT domain entropy masking model in the similar watermarking system. In addition, we analyze the advantages and disadvantages of these models from the aspects of imperceptibility and robustness through our simulation experiment.