Title :
A robust DCT-based watermarking for copyright protection
Author :
Lin, Shinfeng D. ; Chen, Chin-Feng
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Dong Hwa Univ., Hualien, Taiwan
fDate :
8/1/2000 12:00:00 AM
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
Keywords :
copy protection; copyright; data encapsulation; discrete cosine transforms; frequency-domain analysis; image coding; security of data; transform coding; copyright protection; frequency domain; host image; imperceptibility; robust DCT-based watermarking; self-extractable watermark; watermark embedding; weighted correction; Computer science; Copyright protection; Discrete cosine transforms; Frequency domain analysis; Pixel; Random number generation; Random sequences; Robustness; Signal processing algorithms; Watermarking;
Journal_Title :
Consumer Electronics, IEEE Transactions on
