Title :
Multipurpose image watermarking in DCT domain using subsampling
Author :
Gu, Fan ; Lu, Zhe-Ming ; Pan, Jeng-Shyang
Author_Institution :
Dept. of Autom. & Test, Harbin Inst. of Technol., China
Abstract :
In this paper, a DCT-based multipurpose image watermarking algorithm is proposed. Through adopting dither modulation in subimages gained by subsampling, two independent robust watermarks can be embedded in the original image. Experimental results demonstrate the effectiveness of the proposed algorithm.
Keywords :
data encapsulation; discrete cosine transforms; image coding; image sampling; watermarking; DCT domain; dither modulation; embedding; independent robust watermarks; multipurpose image watermarking; subimages; subsampling; Authentication; Automatic testing; Broadcast technology; Copyright protection; Discrete cosine transforms; Discrete wavelet transforms; Electronic equipment testing; Publishing; Robustness; Watermarking; Multipurpose image watermarking; copyright protection; dither modulation; information hiding; subsampling;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465611
