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1、第26卷第5期計(jì)算機(jī)學(xué)報(bào)Vol.26No.52003年5月CHINESEJOURNALOFCOMPUTERSMay2003基于迭代混合的數(shù)字圖像隱藏技術(shù)1)2)3)張貴倉(cāng)王讓定章毓晉(1)西北師范大學(xué)信息與計(jì)算科學(xué)系蘭州730070)(2)寧波大學(xué)信息學(xué)院寧波315211)(3)清華大學(xué)電子工程系北京100084)摘要提出了數(shù)字圖像的單幅迭代混合和多幅迭代混合思想.利用圖像的迭代混合可以將一幅圖像隱藏于另一幅圖像之中,多幅迭代混合可將一幅圖像通過(guò)一組圖像隱藏起來(lái),迭代混合參數(shù)還可以作為隱藏圖像的密鑰,極大地提高了系統(tǒng)的安全性和
2、隱藏圖像的健壯性,圖像迭代混合思想還可以應(yīng)用到數(shù)字水印的研究與應(yīng)用中.實(shí)驗(yàn)分析顯示,該方法簡(jiǎn)單易行,并且算法具有一定程度的魯棒性.關(guān)鍵詞數(shù)字圖像;信息隱藏;混合;迭代;數(shù)字水印中圖法分類號(hào)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