Title :
A watermarking algorithm for certificate forgery prevention
Author_Institution :
Coll. of Inf. & Electron. Eng., Zhejiang Gongshang Univ., Hangzhou, China
Abstract :
A watermarking algorithm for certificate forgery prevention based on the parity of the highest digit from singular values´ average is proposed. It splits an image into non-overlapping blocks, and conducts singular value decomposition on each block. The zero-watermark sequence is produced by judging the parity of the highest digit from singular values´ average in each singular value matrix. The experimental results show that it has strong robustness to resist print-and-scan, thus can achieve certificate forgery prevention.
Keywords :
image watermarking; singular value decomposition; certificate forgery prevention; highest digit parity; image splitting; nonoverlapping blocks; singular value decomposition; singular value matrix; watermarking algorithm; zero-watermark sequence; Forgery; Manganese; Matrix decomposition; Resists; Robustness; Singular value decomposition; Watermarking; certificate forgery prevention; digital watermarking; parity; singular value decomposition; zero-watermarking;
Conference_Titel :
Consumer Electronics, Communications and Networks (CECNet), 2011 International Conference on
Conference_Location :
XianNing
Print_ISBN :
978-1-61284-458-9
DOI :
10.1109/CECNET.2011.5768207
