Wavelet bit-plane based data hiding for compressed images

Authors: Hsiu-Lien Yeh, Shu-Tsai Gue, Piyu Tsai, Wei-Kuan Shih

Abstract:
In this paper, a wavelet bit-plane based data hiding for compressed images is proposed. Image compression not only reduces storage but also benefits transmission. Currently, image encoders including JPEG2000, SPIHT, EZW, etc. also provide multi-stage encoding/decoding. In this paper, the bit-planes of DWT coefficients are selected to carry the secretimage according to the multi-stage encoding. The hidden secret image can be extracted progressively from multi-stage decoded images. Experimental results showed that the secret image was embedded and extracted in multi-stage coded images. Furthermore, the structure of secret image could be identified in earlier decoding stages and then refined in later stages. Accordingly, the progressive secret revealing is achieved. In comparison with the other similar schemes, the proposed method achieves the better quality of stego-image than the other two when the hiding capacity is the same.

Keywords:
Data hiding
Steganography

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 9, September  2013)

Publisher: Elsevier

ISSN Information: 1434-8411

Wavelet bit-plane based data hiding for compressed images

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