Chapter 6

Lossless Information Hiding in JPEG- and JPEG2000-Compressed Images


As we know, most existing multimedia data are stored in compressed formats, thus the data hiding techniques for compressed images become much more practical. Chapters 4 and 5 focused on lossless information hiding techniques for vector quantization–and block truncation coding–compressed images, respectively; this chapter deals with lossless information hiding techniques for JPEG- and JPEG2000-compressed images in this chapter. The JPEG format is the most popular image format in current use. This is because it offers a convenient trade-off between the file size and the perceptual quality of the encoded image. Thus the lossless information hiding schemes for JPEG ...

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