Two Dimensional Data Hiding using Haar Wavelet Filter

Data hiding is a very important filed for security. Due to fast and wide distribution of digital data over internet, need of hiding techniques to secure digital data is required. In this paper, two dimensional data hiding using Haar Wavelet filter has been proposed. Secret data is secured by Discrete Wavelet Transform (DWT) which is embedded into the mid frequency sub-band of a cover data by using variable mixing factor (k). The efficiency and effectiveness of presented work is evaluated on the basis different parameter like as peak signal to noise ratio (PSNR), normalized correlation coefficient (NCC) etc.