Title :
Information hiding using operation of modulo 3 in JPEG coded domain
Author :
Koga, T. ; Shiozaki, A. ; Iwata, M. ; Ogihara, A.
Author_Institution :
Graduate Sch. of Eng., Osaka Prefecture Univ., Sakai, Japan
Abstract :
A new information hiding method in JPEG coded domain of digital images is proposed. The method embeds three bits of digital data into two quantised DCT coefficients by increasing or decreasing the value of each coefficient by one. Thus a lot of data are embedded without degrading image quality.
Keywords :
data encapsulation; discrete cosine transforms; image coding; quantisation (signal); JPEG coded domain; digital data; digital images; image quality; information hiding; modulo 3 operation; quantised DCT coefficients;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20051798
