IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Blind Digital Watermarking of Low Bit-Rate Advanced H.264/AVC Compressed Video
IWDW '09 Proceedings of the 8th International Workshop on Digital Watermarking
A novel watermarking scheme resilient to video compression
ICME'09 Proceedings of the 2009 IEEE international conference on Multimedia and Expo
Multimedia Tools and Applications
Multimedia Tools and Applications
An information hiding framework for lightweight mobile devices with digital camera
PReMI'05 Proceedings of the First international conference on Pattern Recognition and Machine Intelligence
Security evaluation of generalized patchwork algorithm from cryptanalytic viewpoint
KES'05 Proceedings of the 9th international conference on Knowledge-Based Intelligent Information and Engineering Systems - Volume Part I
Perceptual differential energy watermarking for H.264/AVC
Multimedia Tools and Applications
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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.