High capacity steganography technique based on wavelet transform

For secured communication of information steganography is preferred, which embeds the information in a cover object. The objective is to propose a modified high-capacity steganography technique based on wavelet transform with acceptable levels of imperceptibility and distortion in the cover image and with high level of overall security. Wavelet transforms are considered to be an ideal domain for image compression and transmission. Among the four sub-bands, the LL sub-band to hide information is analyzed. Haar wavelet is used to hide an image inside the other image. PSNR and MSE are analyzed to determine the performance of the wavelet and an average value of 29.85dB and 0.03 is obtained respectively.