Journal of Applied Sciences ›› 2018, Vol. 36 ›› Issue (2): 255-266.doi: 10.3969/j.issn.0255-8297.2018.02.005

• Special Issue: Information Security of Multimedia Contents • Previous Articles     Next Articles

Synchronized Data Embedding and Scrambling Scheme in JPEG Images

DAI Yu1, YIN Zhao-xia2   

  1. 1. School of Electronics and Information Engineering, Anhui University, Hefei 230601, China;
    2. School of Computer Science and Technology, Anhui University, Hefei 230601, China
  • Received:2018-01-31 Online:2018-03-31 Published:2018-03-31

Abstract:

A synchronized data embedding-scrambling scheme in JPEG images is proposed in this paper. First, Checkerboard prediction method is used to predict the DC coefcient. According to the prediction error, the DC coefcient values are classifed into three categories:not-predicted (NP), predicted but not embedded (PN), and predictedand-embedded (PE). Then, the PE is vacated to embed information while scrambling the DC coefcients. Finally, the eligible RLC (run length coding) pairs of AC coefcients are rotated to embed information. Experimental results confrmed that the method ensures the high payload and the low fle expansion. The SSIM value of the reconstructed image is more than 0.996. The PSNR value of the reconstructed image is more than 50. And the original image can be reconstructed completely under certain conditions.

Key words: JPEG, data embedding, scrambling, prediction, reversible

CLC Number: