A JPEG Steganalysis Algorithm based on Kernel Fisher Discriminant
Huang Jifeng · Microcomputer applications · 2005
The purpose of image steganalysis is to find out whether the hidden messages exist in images. After differencing DCT coefficients of natural-images and stego-images, their histograms present different laws. This paper regards this as the feature vector to determine whether a hiding message is in the image. Then we further analyse JPEG image which hides the low amount of information, and find that using Kernel fisher discriminant with linear kernel function has good capability of classifying. The results of the experiments show our approach is effective.