Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2006, Vol. 29 ›› Issue (2): 1-4.doi: 10.13190/jbupt.200602.1.jiangn

• Papers •     Next Articles

A New Method for Blind Image Steganalysis

JIANG Nan,WANG Jian,YANG Yixian   

  1. Information Security Center, Beijing University of Posts and Telecommunications
  • Online:2006-04-28 Published:2006-04-28

Abstract: Image quality metrics have two inputs: the original image and the stego image. Whereas blind image steganalysis only has one input: the stego image. In order to fit blind image steganalysis, the image quality metrics must be altered: the original images are replaced by white images. Using four image quality metrics, the distance between stego images and white images can be obtained. Regarding the distance as eigenvectors and using SVM (support vector machine) to classify them into two classes: one includes hidden information, the other one doesn't. Bandpass filter property of human visual system is used to improve correct detection rate. Experiments show that this method is effective to nature images.

Key words: Information hiding, steganalysis, human visual system, support vector machine