A BST-based robust image hiding method

Authors: Ho, Y-A; Chan, Y-K; Tsai, C-S; Chu, Y-P

Source: Imaging Science Journal, The, Volume 56, Number 6, December 2008 , pp. 351-359(9)

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Abstract:

This paper proposes an image hiding method which first compresses a secret image by base switching transformation (BST) and then ranks the compression data according to their significance. Meanwhile, the cover image is transformed into a frequency domain image by discrete wavelet transformation. After that, the dominant compression data are hidden in the lower frequency sub-bands and the trivial compression data in the higher frequency sub-bands of the frequency domain image. When the dominant compression data are damaged, the hamming code method is used to correct the damaged data. If the trivial compression data are changed, only the secret image data relating to the damaged data are affected. This proposed method also can yield a high hiding capacity of 2.25 bits/pixels.

Keywords: LSB; DATA HIDING; DISCRETE WAVELET TRANSFORM; IMAGE HIDING

Document Type: Research Article

DOI: http://dx.doi.org/10.1179/174313108X344489

Publication date: 2008-12-01

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