A Novel DWT Based Invisible Watermarking Technique for Digital Images
نویسندگان
چکیده
The two most aspects of any image based steganographic system are the quality of the stego-image & the capacity of the cover image. 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 mediumhigh frequency components in each reconstructed block for 3level 2-D DWT of cover image. The procedures of the proposed system mainly include embedding & extracting. The original image can be recovered losslessly when the secret data had been extracted from stego-image. Keywords— DWT, Haar Wavelet, Information Hiding,
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ورودعنوان ژورنال:
- Int. Arab J. e-Technol.
دوره 2 شماره
صفحات -
تاریخ انتشار 2012