Spatial Domain Texture Synthesis for Data Embedding

Abstract

Secrete information is embedded in some cover medium through steganography. The contents of information as well as existence of information must be undetectable to attackers. Steganography is normally done by slightly altering the pixel values of cover image. We have used texture synthesis process for embedding the data instead of changing pixel values. Correlation at joining edges of patches to be stitched is considered for suitable patch selection. Energy of candidate patches is the parameter used to verify uniqueness of candidate patches and to identify patch in data extraction process. Along with energy, other parameters like mean as well as mean, variance, kurtosis and skewness combined are experimented. The data extraction rate in presence of different stego attacks is observed.