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Lossless Information Hiding in Images by Shi-Ze Guo, Zhe-Ming Lu

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Chapter 4

Lossless Information Hiding in Vector Quantization Compressed Images

Abstract

The traditional pixel-domain information hiding algorithms may be greatly compromised when the images are encoded by lossy compression algorithms, which in this sense can be regarded as a type of attack to the original information hiding algorithms. This problem is especially urgent to the pixel-domain-based lossless information hiding algorithms because of the requirement of perfect restoration, which could be impaired by some lossy compression process. Nowadays, since more and more images are being stored in compressed formats such as JPEG and JPEG2000 or transmitted based on vector quantization (VQ) [1] and block truncation coding (BTC) [2], more and more ...

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