Earticle

초록

영어

Good image quality and high hiding capacity are two basic requirements of information hiding systems. Technically, it is very challenging to achieve these two factors simultaneously. The purpose of obtaining either high hiding capacity or good image quality are various from application to application. Inspired from the wet paper codes proposed by Fridrich et al., we propose an information hiding scheme for grayscale images. The proposed scheme first uses a secret key to randomly select a subset of pixels from a cover image as dry pixels. Next, the toral automorphism is applied to the cover image to maximize the number of dry pixel pairs. Then, each secret digit in the base-9 numeral system is embedded into one dry pixel pair. The experimental results show that the proposed scheme can achieve good image quality (i.e., PSNR > 46 dB) and flexible hiding capacity. In addition, unauthorized users without knowing the secret key and the secret parameters used for the toral automorphism can not extract the embedded message.

목차

Abstract
 1. Introduction
 2. Related works
  2.1. Chang et al.’s scheme
  2.2. Wet paper codes
  2.3. Toral automorphism
 3. The proposed method
  3.1. The embedding phase
  3.2. The extracting phase
 4. Experimental results and discussions
 5. Conclusions
 References

키워드

저자

• The Duc Kieu [ Department of Information Engineering and Computer Science, Feng Chia University, Taichung 401724, Taiwan, R.O.C. ]
• Zhi-Hui Wang [ School of Software, Dalian University of Technology, Dalian, Liaoning, China ]
• Chin-Chen Chang [ Department of Information Engineering and Computer Science, Feng Chia University, Taichung 401724, Taiwan, R.O.C.; Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi 621, Taiwan, R.O.C. ]
• Ming-Chu Li [ School of Software, Dalian University of Technology, Dalian, Liaoning, China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Smart Home

• 간기

  격월간

• pISSN

  1975-4094

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605