Universal Image Steganalysis using Feature Extraction through the Combinational Transforms

The art of Steganalysis is to be discoverthe presence of hidden message through the cover media. The main issue in Blind image Steganalysis is the non-availability of knowledge about the Steganography technique applied to the stego image. In the SVD technique the detection of hidden message is very difficult. So, in order to detect the hidden Message data in digital images using combinational transforms like Discrete Cosine Transform(DCT) and Discrete Wavelet Transform(DWT) techniques is used.The procedure is applied for different images like stego image and clean image. After feature extraction, SVM is chosen for classification due to its efficiency and flexibility.