A Novel Method of high-Capacity Steganography Technique in Double Precision Images

Purpose of digital image steganography is to hide the existence of secret information into digital images. The spatial domain digital image steganography is flourishing area from the last decades due to its enhanced impressive capability of concealing information. The steganography techniques of information of hiding information into digital images cannot be recognized by human visual systems. In this paper floating points number are being used as it is more redundant and comparatively suitable for time domain steganography for data hiding. The aim of this paper is to have higher capacity and PSNR as compared to previously developed techniques in spatial domain. Here it is being proposed A Novel Method of high-Capacity Steganography Technique in Double Precision Images and this method is based on 64-bit double-precision IEEE754 floating-point number notation. This number system is highly precise and required 64-bit to represent a pixel value in the image. Any change due to data hiding in double precision image pixels is comparatively very less and it increases the capacity and PSNR of the proposed technique.