By Topic

Cryptanalysis of optimal differential energy watermarking (DEW) and a modified robust scheme

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Das, T.K. ; Indian Stat. Inst., Calcutta, India ; Maitra, S. ; Mitra, J.

This work presents a cryptanalytic methodology of the well-known "Optimal Differential Energy Watermarking (DEW)" scheme. The DEW scheme divides the image into some disjoint regions (each region containing two subregions). In the DEW scheme, the watermark is a secret binary string where each individual bit information gets inserted in one of the regions by modifying the high-frequency Discrete Cosine Transform (DCT) coefficients. This modification creates a required energy difference between two subregions. We modify these high-frequency components so that this energy difference vanishes, and in turn, extraction of the watermark signal becomes impossible, making the cryptanalysis successful. Further, we improve the DEW scheme by inserting the watermark information in low-frequency components instead of high-frequency components and propose an oblivious robust watermarking strategy that enables forensic tracking. We present statistical justification toward the robustness of our modified scheme.

Published in:

Signal Processing, IEEE Transactions on  (Volume:53 ,  Issue: 2 )