A new image steganalysis method for higher-order statistical data in wavelet domain
Zhanting Yuan · Journal of Lanzhou University of Technology · 2009
On the basis of analysis,investigation,and modification of existing blind detection algorithm,a new method for blind detection of secret information in JPEG image was proposed.This method was used to decompose the DCT coefficients of JPEG images in wavelet domain and then calculate a series of higher-order statistical features of the sub-band wavelet coefficients,making up 72-dimensional feature vector.By introducing feature zooming technique,this 72-dimensional feature vector was scaled up and down,and classified with support vector machine.Experimental results of the images taken from CorelDraw image database showed that the mean correct detection rate was greater than 91% in four kinds of different steganography mode(embedding rate being 100%).