Title :
A blind watermarking algorithm based on block DCT for dual color images
Author :
Zheng Chaomei ; Li Yuan
Author_Institution :
Nanchang Univ., Nanchang, China
Abstract :
Firstly, this paper introduces some related concepts, principles, technology, and image pre-processing knowledge about digital watermarking. Secondly, on the basis of JPEG image compression coding and the HVS, the paper analyzes and compares some current image watermarking algorithms based on block DCT, and presents a novel dual-color image watermarking algorithm based on spread-spectrum technology and block DCT. Lastly, VC++ and Matlab7.0 are used to implement the proposed image watermarking algorithm. Simulation results show that the proposed algorithm in this paper has good performances in transparency and robustness.
Keywords :
data compression; discrete cosine transforms; image coding; image watermarking; JPEG image compression coding; Matlab7.0; VC++; blind watermarking algorithm; block DCT; digital watermarking; dual color image watermarking algorithm; image pre-processing knowledge; spread-spectrum technology; Brushes; Filtering; Watermarking; bit error correction; block DCT; color space; image compression; spread spectrum technology;
Conference_Titel :
Computer Science and Network Technology (ICCSNT), 2011 International Conference on
Conference_Location :
Harbin
Print_ISBN :
978-1-4577-1586-0
DOI :
10.1109/ICCSNT.2011.6182292
