HSI鲁棒彩色图像数字水印算法

:2004212231;:2005203215:973(G1999035804);(4042022);HSI31,1,1,1,2(1.,100876;21,):,RGBHSI,HSII(),JND,RGB,,,:;HSI;;:TP391:A:100123695(2006)0120224203RobustColorImageWatermarkAlgorithminHSIJIANGNan1,WANGJian1,NIUXin2xin1,YANGYi2xian1,ZHOUXi2zeng2(11InformationSecurityCenter,BeijingUniversityofPosts&Telecommunications,Beijing100876,China;2.YuanZeUniversity,Taiwan,China)Abstract:AnewdigitalwatermarkalgorithmforcolorimageisproposedbychangingtheoriginalimagefromRGBcolorspacetoHSIcolorspace;auto2adaptivelyinsertingthewatermarkintoIcomponentcombinedwithJND;changingHSIintoRGBagain.Theoriginalimagesandwatermarksareun2necessaryforthedetection.Theexperimentalresultsshowthattheproposedalgorithmiseffectiveandrobusttolossycompression,filtering,noising,andetc.Especiallyitreceivesbetterrobust2nessundercolordepthtransform.Keywords:DigitalWatermark;HSIColorSpace;ColorDepthTransform;JustNoticeableDistortionThreshold,,RGB,,RGB,,,()HSI,,(H)(S)(I),,,,,(IC),,,2416:HVS,JPEG2000MPEG24,DWT1HSI111HSIRGBRGBHSI,,(1)RGBHSIH=BG2-BGS=1-3(R+G+B)[min(R,G,B)]I=13(R+G+B)(1)=arccos12[(R-G)+(R-B)][(R-G)2+(R-B)(G-B)]1/2(2)HSIRGBr=RR+G+B,g=GR+G+B,b=BR+G+B,R=3Ir,G=3Ig,B=3Ib,0H23(RG),4222006©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.b=13(1-S)r=131+ScosHcos[13-H]g=1-(r+b)(2-1)23H43(GB),H=H-23,r=13(1-S)g=131+ScosHcos[13-H]b=1-(r+g)(2-2)43H2(BR),H=H-43,g=13(1-S)b=131+ScosHcos[13-H]r=1-(g+b)(2-3)2416,85,(1)(2),,,H,SI(I)RGBHSI,112JND,,()JND(JustNoticedDifference),JNDHVS,[25]JNDJND11211,,,Safranek[6]Iu,v,I(u,v),mean(u,v),(u,v),(u,v)=-f(mean(u,v))(3)f()[6]11212Iu,v,var(u,v),(u,v)=ln(var(u,v))[a,b]:(u,v)=b-amax()-min()[(u,v)-min()]+a(4)(u,v)11213,l,{LH,HL,HH},(l,)=2=HH1=HHLH1.00l=00132l=10116l=2(5),JNDJND(u,v,l,)=(u,v)(u,v)(l,)(6)113111311FASSW,Hilbert,,,Wr11312MN(1)RGBHSI,I88,Iu,v,I(u,v),u{1,2,,M/8},v{1,2,,N/8}Iu,v,A(u,v,),mean(A(u,v,))max(A(u,v,))min(A(u,v,)),A(u,v,)=mean(A(u,v,))-min(A(u,v,))max(A(u,v,))-min(A(u,v,))JND(u,v,1,)(7)(0,1),,(7),JND,,B(u,v,)=round(A(u,v,))mod(8),Wr(i)=1B(u,v,)/2,A(u,v,)A(u,v,)+2JND(u,v,1,)(max(A(u,v,))-min(A(u,v,)))+min(A(u,v,))-mean(A(u,v,));Wr(i)=0B(u,v,)/2,A(u,v,)mean(A(u,v,))-A(u,v,)-2JND(u,v,1,)(max(A(u,v,))-min(A(u,v,)))-min(A(u,v,)),Aw(u,v,)Aw(u,v,)Iwu,v,(2)RGB,114RGBHSI,Iwu,v88,(7)(8)Iwu,vB(u,v,),B(u,v,HL)+B(u,v,LH)+B(u,v,HH){0,1},Wr(i)=0;B(u,v,HL)+B(u,v,LH)+B(u,v,HH){2,3},Wr(i)=1,5221:HSI©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,(7)JND,223232,25625624Baboon,PSNR=38.6455,Photoshop7.032416,(NC)1,4(a)4(d)10,9,8,7JPEG,NC1,0.9941,0.9727,0.8789,JPEG5,NC=0.96296,NC=0.91997(a)7(d)5%10%5%10%,NC0.9180,0.8047,0.9043,0.74028(a)8(d)50%50%,NC0.9824,0.9844,0.9746,0.9727,Baboon,,11BaboonLenaF16PeppersPSNR38.645539.437937.912638.72333,,HSI,:(1)RGBHSI,(2),JND,(3),,:[1]RafaelCGonzalez,RichardEWoods.DigitalImageProcessing(2ndEdition)[M].PearsonEducation,Inc,USA,2002.[2]YangHF,ChenXW.ARobustImage2adaptivePublicWatermar2kingTechniqueinWaveletDomain[J].JournalofSoftware,2003,14(9):165221660.[3]LeeJS,LiangST,HSUKC.PromotingWatermarkPerformancebyUsingEnergyReallocation[C].Proceedingofthe8thIEEEInterna2tionalSymposiumonComputersandCommunication,Kemer2Antalya,Turkey,2003.[4]GaoJG,FowlerJE,YounanNH.AnImageAdaptiveWatermarkBasedonRedundantWaveletTransform[C].ProceedingoftheIEEEInternationalConferenceonImageProcessing,Thessaloniki,2001.[5]BarniM,BartoliniF,PivaA.ImprovedWavelet2basedWatermarkingthroughPixelWiseMasking[J].IEEETransactionsonImageProces2sing,2001,10(5):7832791.[6]FeiCH,KundurD,KwongRH.AnalysisandDesignofWatermar2kingAlgorithmsforImprovedResistancetoCompression[J].IEEETransactionsofImageProcessing,2004,13(2):1262144.:(19772),,,;(19752),,,;(19632),,,,,;(19612),,,,,,,(220),:[1]FosterI,KesselmanC.Globus:AMetacomputingInfrastructureToolkit[J].InternationalJournalofSupercomputerApplications,1997,11(2):1152128.[2]FosterI.WhatistheGrid?AThreePointsChecklist[J/OL].GridTo2day,2002,1(6).[3]WebbD,WendelbornAL.JavaCoglets[C].Proc.ofthe2ndIntlConf.onClusterandComputationalGrid(CCGRID2002),Berlin:IEEEComputerSocietyPress,2002.4322433.[4]OpenGridServicesArchitectureRoadmap[EB/OL].[5]Smarr,CCatlett.Metacomputing[J]1CommunicationoftheACM,1992,35:44252.:(19752),CERNET,,,;,,6222006©1995-2006TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.