数字图像嵌入隐藏信息技术研究

华中科技大学硕士学位论文数字图像嵌入隐藏信息技术研究姓名：罗志兵申请学位级别：硕士专业：通信与信息系统指导教师：谈新权20050501IIITheinformationhidingwhichisnewlyarisenacrosslotsoffields,hasbrokenthetraditionalcryptographicideas.Itisanewpointofviewtosurveytheinformationsecurityandisanewdirectioninthatrealm.Theinformationhidingtechniqueswillraisetheimportantfunctioninsecretcommunicationespeciallytheinformationsecurityonthenetworks.CombinedwithHVS(HumanVisualSystem),wecanputsecretmessageintheimagewithoutdegradingthequalityforitsredundancyandtosecuretheinformation.Themessagetobetransferredcanbeimageortextfile,andcanbehidedinthespacedomainorfrequencydomainoftheimage.Atpresenttime,mostofthestudiesfocusondigitalwatermarkingtechniques,andfewaredoneonsteganography,oneofthemostimportantdirectionsinthefieldofinformationhiding.Thisthesisconcernsthesteganography.Wealsoplaceemphasisonitsapplicationsindigitalimages.Incontrastwithencryption,theexistenceofcommunicationprocessandbothcommunicationsidesishidedinthesteganography.Inthispaper,firstly,thebasicknowledgeaboutinformationhidingispresented,andthenthetechniquesofdigitalimagesbasedinformationhidinginthedomainofspaceanddomainoffrequency.Therespectiveadvantagesanddisadvantagesarepresented.Baseontheanalysisofsecurityofembeddingdatainimage,aschemeforsecretcommunicationisdesigned.Thescheme’securityisstrong,anditcanbeusedformartialsecretcommunicationande-commerceetc.Keyword:InformationHiding;Secretcommunication;SteganographyDataembeddingDigitalimage______12“”“”[7]345678“”“”9“”“”“”“”“”“”1011121314151616)12(cos16)12(cos),(4)()(),(770ppvyuxyxfvCuCvuFoxy++=∑∑==16)12(cos16)12(cos),(4)()(),(770ppvyuxvuFvCuCyxfovu++=∑∑==)0(,1)()0(,21)(===uuCuuC)0(,1)()0(,21)(===vvCvvC),(yxfyx,),(vuFvu,173.73.718192021DCTDCTDCT2223242526272829(a)Lena.bmp(c)bman.bmp(e)(g)(f)(h)(d)3031KBKbitbit64810243*512*512*444114*64)1310(==+++++-KBKbitbit2419210243*512*512*444114*64)1310(*4==+++++-),(jifij32∑∑==-′=NjMijifjifMNMSE121)),(),((1MSEPSNR2255lg10=.1db93=PSNRdb8.72=PSNR3334353637xDCTHashDCTDCT38x`DCTHashDCT39404142200253017042005443Herodotus.TheHistories.London:Dent&SonsLtd.1992AndersonR.J.PetitcolasF.A.P.Onthelimitsofsteganography.SelectedAreasinCommunications,IEEEJournalonVol.16,Issue4,May1998:474-481ShannonC.E.CommunicationTheoryofSecrecySystems.BellSystemTechnicalJournal.1949.(28)4:656-715SimmonsG.J.ThePrisoners'ProblemandtheSubliminalChannel.InAdvanceinCryptlopy,ProceedingsofCRYPTO'83.PlenumPress1984:51-67,VenkatramanS,AjithAbraham,PaprzyckiM.Significanceofsteganographyondatasecurity.InformationTechnology:CodingandComputing,2004.Proceedings.ITCC2004.InternationalConferenceonVo.2.5-7April2004:347-351FabienA.P.Petitcolas,RossJ.AndersonandMarkusG.Kuhn.InformationHiding--ASurvey.ProceedingsoftheIEEE,specialissueonprotectionofmultimediacontent,July1999:1062-107844CoxIJ,KilianJ,LeightonT.Securespreadspectrumwatermarkingformultimedia.IEEETransactiononImageprocessing.1997.6(12):1673-1687Niels,ProvosandHoneyman.HideandseedAnintroductiontosteganography.IEEESecurity&PrivacyMay/June2003:32-44LamEY,GoodmanW.AmathematicalanalysisoftheDCTcoefficientdistributionsforimages.IEEETrans.OnImageProcessing,2000.9(10):16611666WenNungLie,GuoShiangLin,etc.RobustimagewatermarkingontheDCTdomain.IEEEInternationalSymposiumonCircuitsandSystems,2000.1:228-231.SuthaharanS.Transformdomaintechnique:robustwatermarkingfordigitalimages.ProceedingsoftheIEEE7-9April2000:407-412WestfeldA,PfitzmannA.AttacksonSteganographicSystems.InProcessingofInformationHiding,ThirdInternationalWorkshop.1999FridrichJ,LongM.SteganalysisofLSBEncodinginColorImages.Multimedia45andExpo,2000.ICME2000.2000IEEEInternationalConferenceonVolume3,30July-2Aug2000:1279-1282FridrichJ,GoljanM,RuiDu.DetectingLSBSteganographyinColorandGray-scaleImages.Multimedia,IEEEVol.8,Issue4,Oct-Dec2001:22-28LeeYK,ChenLH.AnAdaptiveImageSteganographicModelBasedonMinimum-errorLSBReplacement.ProceedingsoftheNinthNationalConferenceonInformationSecurity,Taiwan.1999:8-15LinGS,LieWN.StudyonDetectingImageHidingByFeatureAnalysis.Proc.ofIEEEInternationalSymposiumonCircuitsandSystems,ISCAS-2001,Sydney,Australia.2001:149-152FaridH.DetectingHiddenMessagesUsingHigher-orderStatisticalModels.InternationalConferenceonImageProcessing,Rochester,NY,2002ProvosN,HoneymanP.DetectingSteganographicContentontheInternet.TechnicalReportCITI01-1a,UniversityofMichigan.2001FridrichJ,GoljanM,DuR.SteganalysisBasedonJPEGCompatibility,SPIEMultimediaSystemsandApplicationsIV.SPIEPress,Bellingham,Wash.2001YsmailAvcyba.ImageQualityStatisticsandTheirUseInSteganalysisandCompression.BoaziciUniversity.2001SteveBurnettandStephenPainStefanKatzenbeisser,FabienA.PPetitcolas.InformationHidingTechniquesforSteganographyandDigitalWatermarking.ArtechHouse.200046数字图像嵌入隐藏信息技术研究作者：罗志兵学位授予单位：华中科技大学相似文献(10条)1.学位论文柏森基于信息隐藏的隐蔽通信技术研究2002在人类历史的长河中，人们在不断地寻求更新的、更有效的交流与通信方式。从最早的洞穴图画、烽烟信号、鸣鼓警报，到后来文字产生、电报发明、广播传送、电视普及，直至今天的Internet与E-mail。这还仅仅是我们所能描述的一个小小的片段，未来的通信将是难以想象的。不过，随着时代的前进，社会的进步，科技的发展，新的需要、新的发展机会将不断产生；通信中新的问题、新的方式将不断涌现。以信息隐藏技术为基础的隐蔽通信技术正是最新涌现出的一朵绚丽奇葩。加密通信仅能隐蔽通信的内容，让别人不能理解。而基于信息隐藏的隐蔽通信，不仅能隐蔽通信的内容，而且能隐蔽通