计算机科学 ›› 2016, Vol. 43 ›› Issue (5): 108-112.doi: 10.11896/j.issn.1002-137X.2016.05.020
司一帆,魏立线,张英男,刘佳
SI Yi-fan, WEI Li-xian, ZHANG Ying-nan and LIU Jia
摘要: 针对通用小波失真函数(UNIWARD)的失真代价的四舍五入误差为1/2时嵌入失真为零的问题,基于边信息的通用小波失真函数(SI-UNIWARD),提出了一种改进隐写方案。该方案首先对前载体的原始像素值进行四舍五入,然后重新定义了一组间距合理的四舍五入误差,产生了新的嵌入代价,重新使用了在SI-UNIWARD中禁用的00、40、04、44模式中的1/2离散余弦变换(DCT)系数,避免了检测性能的病态饱和,从而解决了零嵌入失真代价问题。实验表明,该方案与SI-UNIWARD相比,DCT系数的更改概率降低了3%,同时降低了空域中像素值间的数量差别和DCT系数的嵌入更改率,提升了检测误差性能,能够较好地利用边信息。
[1] Huang F,Huang J,Shi Y Q.New channel selection rule for JPEG steganography[J].IEEE Transactions on Information Forensics and Security,2012,7(4):1181-1191 [2] Sachnev V,Kim H J,Zhang R.Less detectable JPEG steganography method based on heuristic optimization and BCH syndrome coding[C]∥Dittmann J,Craver S,Fridrich J,eds.Proceedings of the 11th ACM Multimedia & Security Workshop.2009:131-140 [3] Holub V,Fridrich J.Universal distortion function for steganography in an arbitrary domain[C]∥EURASIP Journal on Information Security,Special Issue on Revised Selected Papers of the 1st ACM IH and MMS Workshop(2013).2013 [4] Holub V,Fridrich J.Designing steganographic distortion using directional filters[J].IEEE International Workshop on Information Forensics and Security.2012,2(4):234-239 [5] Huang F,Luo W,Huang J,et al.Distortion function designing for JPEG steganography with uncompressed side-image[C]∥1st ACM Information Hiding and Multimedia Security Workshop.Montpellier,France,2013:17-19 [6] Ker A D.A fusion of maximal likelihood and structural stegana-lysis[C]∥ 9th International Workshop.Springer Berlin Heidelberg,2007:204-219 [7] Kodovsky J,Fridrich J.Steganalysis of JPEG images using rich models[C]∥ Proceedings SPIE,The International Society for Optical Engineering.2012:1-13 [8] Filler T,Pevny T,Bas P.BOSS(Break Our Steganography System).http://www.agents.cz/boss [9] Fridrich J,Kodovsky J.Rich models for steganalysis of digitalimages[J].IEEE Transactions on Information Forensics and Security,2011,7(3):868-882 [10] Kodovsky J,Fridrich J,Holub V.Ensemble classifiers for steganalysis of digital media[J].IEEE Transactions on Information Forensics and Security,2012,7(2):432-444 [11] Holub V,Fridrich J.Digital image steganography using universal distortion[C]∥1st ACM Information Hiding and MultimediaSecurity Workshop.Montpellier,France,2013 [12] Filler T,Judas J,Fridrich J.Minimizing additive distortion in steganography using syndrome-trellis codes[J].IEEE Transactions on Information Forensics and Security,2011,6(3):920-935 |
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