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时间:2020-04-28
《基于迭代混合的数字图像隐藏技术.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、第26卷第5期计算机学报Vol.26No.52003年5月CHINESEJOURNALOFCOMPUTERSMay2003基于迭代混合的数字图像隐藏技术1)2)3)张贵仓王让定章毓晋(1)西北师范大学信息与计算科学系兰州730070)(2)宁波大学信息学院宁波315211)(3)清华大学电子工程系北京100084)摘要提出了数字图像的单幅迭代混合和多幅迭代混合思想.利用图像的迭代混合可以将一幅图像隐藏于另一幅图像之中,多幅迭代混合可将一幅图像通过一组图像隐藏起来,迭代混合参数还可以作为隐藏图像的密钥,极大地提高了系统的安全性和
2、隐藏图像的健壮性,图像迭代混合思想还可以应用到数字水印的研究与应用中.实验分析显示,该方法简单易行,并且算法具有一定程度的鲁棒性.关键词数字图像;信息隐藏;混合;迭代;数字水印中图法分类号TP391DigitalImageInformationHidingTechnologyBasedonIterativeBlending1)2)3)ZHANGGui-CangWANGRang-dingZHANGYu-Jin(1)DepartmentofInformationandComputingScience,NorthwestNormal
3、Uniuersity,Lanzhou730070)(2)CollegeofInformation,NingboUniuersity,Ningbo315211)(3)DepartmentofElectronicEngineering,TsinghuaUniuersity,Beijing100084)AbstractThedigitalimageblendingisintroduced,andthesingleiterativedigitalimageblendingandmulti-pleiterativedigitalimag
4、eblendingarefirstlyproposed.Withthedigitalimageiterativeblending,newkindsofdigitalimageinformationhidingschemesarepresented.Firstly,withthesingleiterativeimageblending,ase-cretimagecanbehiddeninonecarrierimage,aself-adaptiveimagehidingalgorithmisobtained.Thecarrieri
5、mageandtheblendingparametercanactastheprivatekeys.But,ifamaliciousattackergetthecarrierimageandtheblendingimage,itistotallypossibleforhimtorecoverthesecretimage.Soauthorsdevelopedthemultipleiterativeimageblending,withwhichasecretimagecanbehiddeninonecarrierimagethro
6、ughmanyimages.Animagehidingalgorithmisobtained.Theblendingimagesandtheblendingparametersandthese-guencesoftheimagesblendedcanactastheprivatekeys.Itisimpossibleforanattackertogetalltheblend-ingimagesandtheblendingparameters,eveniftheattackergetalltheblendingimagesand
7、parameters,hestillcannotrecoverthesecretimageduetothelackoftheprocessesoftheblending.Furthermore,thesingleiterativeimageblendingschemeandthemultipleiterativeimageblendingschemecanbeusedtogether,whichcouldmuchmoreenhancethesecurityandrobustnessofthehiddenimage.Inorde
8、rtoevenmoreenhancethesecurityandrobustnessofthehiddenimage,thescramblingtechnologycanbeusedaspre-processandpost-processofdigitalimageinfor
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