Introduction to data compression (2nd ed.)
Introduction to data compression (2nd ed.)
Information Hiding Techniques for Steganography and Digital Watermarking
Information Hiding Techniques for Steganography and Digital Watermarking
Lossless data embedding--new paradigm in digital watermarking
EURASIP Journal on Applied Signal Processing - Emerging applications of multimedia data hiding
Application of Principal Component Analysis to Multikey Searching
IEEE Transactions on Software Engineering
Hiding secret data in images via predictive coding
Pattern Recognition
IEEE Transactions on Multimedia
Reversible watermark using the difference expansion of a generalized integer transform
IEEE Transactions on Image Processing
Side match and overlap match vector quantizers for images
IEEE Transactions on Image Processing
Three-sided side match finite-state vector quantization
IEEE Transactions on Circuits and Systems for Video Technology
Reversible data embedding using a difference expansion
IEEE Transactions on Circuits and Systems for Video Technology
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Reversible steganography allows an original image that has gone through the embedding process to be completely restored after the extraction of the embedded data. In this paper, we propose a reversible scheme with a high embedding capacity for VQ compressed images. Our reversible method is based on a prediction strategy and takes advantage of the local characteristics of the image. Since the location map is usually a necessary part of a reversible scheme, two methods, shifting and relocating, are also proposed to reduce the size of the location map. As the experimental results show later, our method outperforms previous schemes in terms of embedding capacity and image quality. To be more specific, with low distortion, the embedding capacity of the proposed methods can be higher than one bit per index value.