Title :
A Lossless Data Hiding based on Discrete Haar Wavelet Transform
Author :
Huang, Hui-Yu ; Chang, Shih-Hsu
Author_Institution :
Dept. of Comput. Sci. & Inf. Eng., Nat. Formosa Univ., Huwei, Taiwan
fDate :
June 29 2010-July 1 2010
Abstract :
In this paper, a lossless data-hiding scheme is presented based on quantized coefficients of discrete wavelet transform (DWT) in the frequency domain to embed secret message. Using the quantized DWT-based method, we embed secret data into the successive zero coefficients of the medium-high frequency components in each reconstructed block for 3-level 2-D DWT of a cover-image. The procedures of the proposed system mainly include embedding, extraction, and restoration. Experiment results show that this purposed method can achieve high embedding capacity and acceptable image quality of stego-image, and data reversibility.
Keywords :
Haar transforms; data encapsulation; discrete wavelet transforms; feature extraction; frequency-domain analysis; image restoration; quantisation (signal); security of data; data reversibility; discrete Haar wavelet transform; frequency domain; image embedding; image extraction; image quality; image restoration; lossless data hiding; medium-high frequency component; quantized DWT-based method; quantized coefficient; reconstructed block; secret message; stego-image; zero coefficient; Discrete cosine transforms; Discrete wavelet transforms; Image restoration; PSNR; Pixel; Quantization; Wavelet domain; Haar filter; data hiding; discrete wavelet transform;
Conference_Titel :
Computer and Information Technology (CIT), 2010 IEEE 10th International Conference on
Conference_Location :
Bradford
Print_ISBN :
978-1-4244-7547-6
DOI :
10.1109/CIT.2010.276
