Title :
Steganalysis of Reversible Contrast Mapping Watermarking
Author :
Chen, Yeh-Shun ; Wang, Ran-Zan
Author_Institution :
Dept. of Comput. Sci. & Eng., Yuan Ze Univ., Taoyuan
Abstract :
This letter proposes a steganalysis scheme for detecting reversible contrast mapping (RCM) watermarking. RCM watermarking involves the transformation of pixel pairs belonging to the RCM domain, which introduces artifacts into the least-significant bit (LSB). We found that the LSB histogram varies between a stego-image to the cover image, and we used this information to design a specific steganalysis method for detecting RCM watermarking and also estimating the length of the hidden message. The experimental results show that the proposed scheme successfully breaks RCM watermarking for various embedding rates and can also accurately estimate the message length.
Keywords :
steganography; watermarking; LSB histogram; cover image; hidden message; least-significant bit; reversible contrast mapping watermarking; steganalysis scheme; stego-image; Biomedical imaging; Councils; Digital images; Histograms; Image reconstruction; Military communication; Payloads; Pixel; Steganography; Watermarking; Reversible contrast mapping; steganalysis; steganography; watermarking;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2008.2008951