Lattice-Based Minimum-Distortion Data Hiding

Minimum Distortion Data Hiding for Compressed Images

ACKNOWLEDGEMENTS Many people have contributed to this work. It is impossible to name all of them. I am thankful to everyone who has been with me during this incredible journey. I would like to thank my advisor Nikil Jayant first. He has been a role model to all of us. He has always provided support whenever we need, and never stopped believing in what we can do. His brilliance, attention and po...

A minimum distortion data hiding technique for compressed images

We present a blind data hiding method for JPEG compressed images which minimizes the perceptual distortion due to data embedding. The proposed system presents a number of op. tions to the encoder to cast the given hidden bits in the compressed content signal. The perceptual distortion cost of each option is calculated from the parameters available to the encoder such as the original image, quan...

Exploiting Security Holes in Lattice Data Hiding

This paper presents a security analysis for data hiding methods based on nested lattice codes, extending the analysis provided by previous works. The security is quantified in an information-theoretic sense by means of the information leakage between the watermarked signals seen by the attacker and the secret key used in the embedding process. The theoretical analysis accomplished in the first ...

Multiple Codebook Information Hiding Based On Minimum

Improved Data Hiding Method Based on Use of Edge Line Distortion Score

This paper by considering objective distortion measure into a data hiding method makes a little improvement to it. The distortion measure considers not only how many pixels are changed but also where the pixels are changed and how the flipping affects the overall shape formed by the edge line. The data hiding method uses a secret key and a weight matrix to protect the hidden data and ensures th...