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394Vol.39,No.420094LASER&INFRAREDApril,2009:100125078(2009)04204392041,2,1(1.,130033;2.,100039)::,,,,,:;;;:TP391.4:AResearchonImageFusionAlgorithmBasedonLaplacianPyramidTransformCHENHao1,2,WANGYan2jie1(1.ChangchunInstituteofOptics,FineMechanicsandPhysics,ChineseAcademyofSciences,Changchun130033,China;2.GraduateSchooloftheChineseAcademyofSciences,Beijing100039,China)Abstract:ThispaperexplainsthetheoryandmethodofimagefusionbasedonLaplacianpyramid.TheLaplacianim2agefusionschemebeginsbyconstructingLaplacianpyramidsforeachsourceimage,andtheneachlevelofLaplacianpyramidsisfusedwithdifferentfusionrule.Finally,theendfusedimageisobtainedbyinverseLaplacianpyramidtransform.Byanalyzingthefusionimagewithvisibleandinfraredimage,theexperimentalresultsshowthatthisalgo2rithmcanproducehigh2contrastfusionimagethatareclearlymoreappealingandhavegreaterusefulinformationcon2tent.Itprovesthatthealgorithmcangetagoodfusionresult.Keywords:imagefusion;Laplacianpyramid;fusionrule;infraredimage1BurtAdelson,,,2,2.1G0,G00(),,;,;,:(1982-),,,E2mail:ciompchen@163.com:2008209225:lGl:Gl(i,j)=2m=-22n=-2¢(m,n)Gl-1(2i+m,2j+n)(1lN,0iRl,0jCl)(1),N;RlCll;¢(m,n)55,:¢=12561464141624164624362464162416414641(2),G0,G1,,GN,G0(),GN,21/42.2Gl,G3l,G3lGl-1,:G3l(i,j)=42m=-22n=-2¢(m,n)Gl(i+m2,j+n2)(0lN,0iRl,0jCl)(3),G3l(i+m2,j+n2)=Gl(i+m2,j+n2),i+m2,j+n20,(4)LPl=Gl-G3l+1,0lNLPN=GN,l=N(5),N;LPllLP0,LP1,,LPl,,LPN,,2.3(5):GN=LPN,l=NGl=LPl+G3l+1,0lN(6)(6),(6),,G03,,,LAlLBlA,Bl,LFl(0lN)l=N,LANLBNA,B,MN(M,NM3,N3):G=1(M-1)(N-1)M-1i=1N-1j=i(I2x+I2y)/2(7),IxIyf(x,y)xy,:Ix=f(x,y)-f(x-1,y)(8)Iy=f(x,y)-f(x,y-1)(9)LAN(i,j)LBN(i,j)GA(i,j)GB(i,j),,,:LFN(i,j)=LAN(i,j)GA(i,j)GB(i,j)LBN(i,j)GA(i,j)GB(i,j)(10)0lN,l,:ARE(i,j)=p-pq-q¢(p,q)|LAN(i+p,j+q)|(11)04439BRE(i,j)=p-pq-q¢(p,q)|LBN(i+p,j+q)|(12)p=1,q=1,¢=116121242121,:LFl(i,j)=LAl(i,j)ARE(i,j)BRE(i,j)LBl(i,j)ARE(i,j)BRE(i,j)0lN(13)LF1,LF2,,LFN,(6),4,,:(1),:H=-L-1i=0p(i)log2p(i)(14),p(i)i,[0,1,,L-1],(2)FMN,M,N:RF=1MNMi=1Nj=2[F(i,j)-F(i,j-1)]2(15):CF=1MNMi=1Nj=2[F(i,j)-F(i-1,j)]2(16):SF=RF2+CF2(17),,(3)FMN,(7)(9),5Matlab7.01324,12,34513,624,4,,55,112231144No.420094251621,,,,,,2,,115.078510.51023.450916.72918.51634.797816.865612.83686.506327.183110.53195.461126.37532.65431.972427.205410.96786.31866,,,,,,:[1],,.[J].,2007,24(12):178-180.[2]MoiraISmith,JamiePHeather.Reviewofimagefusiontechnologyin2005[J].Proc.SPIE,2005,5782:29-45.[3],.[J].,2004,21(10):128-130.[4],,.[M].:,2006.[5]YajunSong,KunGao,GuoqiangNi,etal.Implementationofreal2timeLaplacianpyramidimagefusionprocessingbasedonFPGA[J].Proc.SPIE,2007,6833,683316-1-683316-8.[6],,,.[J].,2008,30(2):87-90.[7],,.[J].,2007,28(11):9-13.[8],,.[J].,2007,15(6):702-706.24439