收稿日期: 2018-01-31
网络出版日期: 2018-03-31
基金资助
国家自然科学基金（No.61502009）；安徽大学科研训练计划基金资助
Synchronized Data Embedding and Scrambling Scheme in JPEG Images
Received date: 2018-01-31
Online published: 2018-03-31
戴禹, 殷赵霞 . JPEG图像同步嵌入与加扰方案[J]. 应用科学学报, 2018 , 36(2) : 255 -266 . DOI: 10.3969/j.issn.0255-8297.2018.02.005
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
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