O'Reilly logo

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

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

3.4. Integer Wavelet Transform–Based Schemes

In this section, we turn to integer wavelet transform–based lossless information hiding schemes, which adopt the so-called CDF(2,2) wavelet. Thus, we first introduce related concept of the CDF(2,2) wavelet.
The CDF(2,2) wavelet was proposed by Cohen, Daubechies, and Feauveau in 1992 [14]; it is a dual orthogonal (i.e., biorthogonal) (5,3) wavelet, whose low-pass and high-pass filters are with lengths of 5 and 3, respectively, both presenting symmetry. We can obtain an integer-to-integer bijective CDF(2,2) wavelet by lifting the original CDF (2,2) wavelet based on a certain lifting scheme, and this type of integer wavelet has been adopted in the JPEG2000 standard. Experiments have shown that, compared ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required