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简介:InthispaperitisstudiedthatthegeneratedtheoryofwaverecursiveinterpolationofuniformT-subdivi-stonschemeincludewaveparameter.ThepaperanalysestheconvergenceofsequencesofcontrolpolygonsproducedbywaverecursiveinterpolationT-subdivisionschemeoftheformj=l,2,…,T-1;m=O,l,…,nTk;k=0,l,2,…,anddifferentiabilityofthelimitcurve.
简介:ThispaperintroducesthedefinitionoftheOrthogonalTypeNodeConfigurationanddiscussesthecorrespondingmultivariateLagrange,HermiteandBirkhoffinterpolationproblemsinhighdimensionalspaceRs(s>2).ThisnodeconfigurationcanbeconsideredtobeakindofextensionoftheCrossTypeNodeConfiguration[1],[2]inR2tohighdimensionalspaces.AndtheMixedTypeNodeConfigurationinRs(s>2)isalsodiscussedinthispaperinanexample.
简介:Theobjectinthispaperistoconsidertheproblemofexistence,uniqueness,explicilrepresentationof(0,2)-interpolationonthezerosof(1-x2)Pn-1(x)/xwhennisodd,wherePn-1denotesLegendrepolynomialofdegreen-1,andtheproblemofconvergenceofinterpolatorypolynomials.
简介:Thef(x)∈C[-1,1]isgiven,amodificationisgiventotheinterpolationpolynomialQn(f;x)(thepower,lessthanλn,1
简介:LetS∞denotetheunitsphereinsomeinfinitedimensionalcomplexHilbertspace(H,<·,·>)Letz1,z2,…,z1bedistinctpointsonS∞Thispaperdealswithinterpolationofarbitrarydataonthezjbyafunctioninthelinearspanofthelfunctionswhenisasuitablefunctionthatoperatesonnonnegativedefinitematrices.Conditionsforthestrictpositivedefinitenessofthekernelareobtained.
简介:Forgivendata(ti,yi),I=0,1,…,n,0=t0<t1<…<tn=1westudyconstrainedinterpolationproblemofFavardtypeinf{‖f'‖∞|f∈W2∞[0,1],f(ti)=yi,i=0,…,n,l(f;[0,1])≤l0},wherel(f';[0,1])=∫10/1+f'2(x)dxisthearclengthoffin[0,1].Weprovetheexistenceofasolutionf*oftheaboveproblem,thatisaquadraticsplinewithasecondderivativef'*,whichcoincideswithoneoftheconstants-‖f'*‖∞,0,‖f'*‖∞betweeneverytwoconsecutiveknots.Thus,weextendaresultofKarlinconcerningFavardproblem,tothecaseofrestrictedlengthinterpolation.
简介:SeveralcubatureformulasonthecubicdomainsarederivedusingthediscreteFourieranalysisassociatedwithlatticetiling,asdevelopedin[10].ThemainresultsconsistofanewderivationoftheGaussiantypecubaturefortheproductChebyshevweightfunctionsandassociatedinterpolationpolynomialson[-1,1]~2,aswellasnewresultson[-1,1]~3.Inparticular,compactformulasforthefundamentalinterpolationpolynomialsarederived,basedonn~3/4+(?)(n~2)nodesofacubatureformulaon[-1,1]~3.
简介:Theobjectiveofthispaperistogiveaconstructiveapproachtothesolutionofthefundamentalfunctionsforcardinalinterpolationfromashift-invariantspacegeneratedbythe(multi-)integertranslatesofsomecompactlysupportedfunctionwhosepolynomialsymbolhasanon-emptyzeroset.ThisproblemwasfirstintroducedbyChut,Diamond,andRaphael,whereexplicitsolutionsweregivenforvariouszerosets.Later,deBoor,Hollig,andRiemenschneidergaveanexistenceproofforzerosetswhicharemoregeneral.Inthispa-per,wegiveanintegralrepresentationofthefundamentalsolutionsthatcanbemadeexplicitinsomecasesandwewillalsogiveagrowthconditionofsuchfundamentalsolutions.Thefour-directionalboxsplineswillbeusedasanillustrativeexample.
简介:Theregularizedimageinterpolationmethodiswidelyusedbasedonthevectorinterpolationmodelinwhichdown-samplingmatrixhasverylargedimensionandneedslargestorageconsumptionandhighercomputationcomplexity.Inthispaper,afastalgorithmforimageinterpolationbasedonthetensorproductofmatricesispresented,whichtransformsthevectorinterpolationmodeltomatrixform.Theproposedalgorithmcanextremelyreducethestoragerequirementandtimeconsumption.Thesimulationresultsverifytheirvalidity.
简介:ItisaclassicalresultofBernsteinthatthesequenceofLagrangeinterpolationpolynomialsto|x|atequallyspacednodesin[-1,1]divergeseverywhere,exceptatzeroandtheend-points.InthispaperweshowthatthesequenceofLagrangeinterpolationpolynomialscorrespondingtothefunctionswhichpossessbettersmoothnessonequidistantnodesin[-1,1]stilldivergeseverywhereintheintervalexceptatzeroandtheend-points.
简介:ReconstructinganHR(high-resolution)imagewhichpreservestheimageintrinsicstructuresfromitsLR(low-resolution)counterpartishighlychallenging.Thispaperproposesanewsurfacereconstructionalgorithmappliedtoimageinterpolation.Theinterpolationsurfaceforthewholeimageisgeneratedbyputtingallthequadraticpolynomialpatchestogether.Inordertoeliminatethejaggiesoftheedge,anewweightfunctioncontainingedgeinformationisincorporatedintothepatchreconstructionprocedureasaconstraint.Extensiveexperimentalresultsdemonstratethatourmethodproducesbetterresultsacrossawiderangeofscenesintermsofbothquantitativeevaluationandsubjectivevisualquality.
简介:Letφbeanormalfunctionon[0,1]andA~1(φ)theBergmanspacewithweightφ(|z|)/(1-|z|~2).AnatomicdecompositiontheoremforA~1(φ)isobtained,andanecessaryandnearly-sufficientconditionisgiventomakeasequenceofpointsinterpolateforA~1(φ).