The CSM Problem Solving Technique for LSBR Steganography in Image Spatial Domain

An approach that allows to partially solve the Cover-Source Mismatch problem is described. Proposed approach is strictly limited by steganography that distortion can be localize. The article is devoted to applying proposed technique to Least Significant Bits Replacement steganography in image spatial domain. The calibrated images (without the least significant bit plane) are analyzed. The procedures of sorting, clustering and regression analysis are used. The results of the computer experiment indicating an accuracy improvement of steganalysis are presented.