An Improved Image Steganography Technique Using Discrete Wavelet Transform

An Improved Image Steganography Technique Using Discrete Wavelet Transform Richika Mahajan, B.V. Kranthi Electronics and Communication Engineering Lovely Professional University Jalandhar, Punjab, India _________________________________________________________________________________________ Abstract: This paper proposes a new method for hiding a data in frequency domain. In this a spatial domain technique adaptive pixel pair matching is applied on frequency domain with some new modifications in calculating Bary notational system, selecting the co-ordinate pair for making new frequency values and also in secrete data. Discrete wavelet transform is preferred for embedding the secret data. Data is embedded in the middle frequencies because they are more enormous to attacks than that of high frequencies. Coefficients in the low frequency sub-band preserved unaltered to improve the image quality. The experimental results shows better performance in discrete wavelet transform as compared with the spatial domain.