A robust DCT-based watermarking for copyright protection

Authors:
S. D. Lin;Chin-Feng Chen
Affiliations:
Dept. of Comput. Sci. & Inf. Eng., Nat. Dong Hwa Univ., Hualien;-
Venue:
IEEE Transactions on Consumer Electronics
Year:
2000

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Abstract

A novel technique for embedding watermarks into a host image in the frequency domain is proposed. Unlike the traditional techniques, the method addresses that the watermark is embedded at low frequency. The weighted correction is also used to improve the imperceptibility of the watermark. Moreover the watermark is self-extractable and the algorithm is simple. Experimental results demonstrate that the watermark is robust to various attacks