Improved DCT-based watermarking through particle swarm optimization

Authors:
Chih-Chin Lai;Wei-Shun Wang;Ci-Fong Jhan
Affiliations:
Department of Electrical Engineering, National University of Kaohsiung, Kaohsiung, Taiwan;Department of Electrical Engineering, National University of Kaohsiung, Kaohsiung, Taiwan;Department of Electrical Engineering, National University of Kaohsiung, Kaohsiung, Taiwan
Venue:
ICCCI'10 Proceedings of the Second international conference on Computational collective intelligence: technologies and applications - Volume Part III
Year:
2010

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Abstract

With the widespread use of computers and Internet, users have more chances to use multimedia data and digital contents. As a result, illegal reproduction of digital information started to pose a real problem. Digital watermarking has been regarded as an effective solution to protect various kinds of digital contents against illegal use. In this paper, a watermarking technique which applies the discrete cosine transformation and particle swarm optimization is presented. Experimental results demonstrate that the proposed technique is able to withstand a variety of attacks.