Information Hiding Method Using Best DCT and Wavelet Coefficients and Its Watermark Competition

Entropy

Hyunho Kang¹  Keiichi Iwamura²  James Park² 

[1] Department of Electrical Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, 125-8585 Tokyo, Japan; E-Mail

关键词: BCH code;    IHC evaluation criteria;    information hiding;    watermark competition;   

DOI  :  10.3390/e17031218

来源: mdpi

【 摘 要 】

In recent years, information hiding and its evaluation criteria have been developed by the IHC (Information Hiding and its Criteria) Committee of Japan. This committee was established in 2011 with the aim of establishing standard evaluation criteria for robust watermarks. In this study, we developed an information hiding method that satisfies the IHC evaluation criteria. The proposed method uses the difference of the frequency coefficients derived from a discrete cosine transform or a discrete wavelet transform. The algorithm employs a statistical analysis to find the best positions in the frequency domains for watermark insertion. In particular, we use the BCH (Bose-Chaudhuri-Hocquenghem) (511,31,109) code to error correct the watermark bits and the BCH (63,16,11) code as the sync signal to withstand JPEG (Joint Photographic Experts Group) compression and cropping attacks. Our experimental results showed that there were no errors in 10 HDTV-size areas after the second decompression. It should be noted that after the second compression, the file size should be less thanof the original size to satisfy the IHC evaluation criteria.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland