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SegmentationandBoundaryDetectionUsingMultiscale利用多尺分割和邊界檢測第1頁/共64頁LocalUncertainty第2頁/共64頁GlobalCertainty第3頁/共64頁LocalUncertainty第4頁/共64頁GlobalCertainty第5頁/共64頁CoarseMeasurementsforTexture第6頁/共64頁AChickenandEggProblemProblem:CoarsemeasurementsmixneighboringstatisticsSolution:supportofmeasurementsisdeterminedasthesegmentationprocessproceeds第7頁/共64頁

Normalized-cutsmeasureingraphsCompletehierarchyinlineartimeUsemultiscalemeasuresofintensity,texture,shape,andboundaryintegritySegmentationbyWeightedAggregation第8頁/共64頁Normalized-cutsmeasureingraphs

CompletehierarchyinlineartimeUsemultiscalemeasuresofintensity,texture,shape,andboundaryintegritySegmentationbyWeightedAggregation第9頁/共64頁SegmentationbyWeightedAggregationNormalized-cutsmeasureingraphsCompletehierarchyinlineartime

Usemultiscalemeasuresofintensity,texture,shapeandboundaryintegrity第10頁/共64頁ThePixelGraphCouplingsReflectintensitysimilarityLowcontrast–strongcouplingHighcontrast–weakcoupling第11頁/共64頁HierarchicalGraph第12頁/共64頁Hierarchy

inSWA第13頁/共64頁Normalized-CutMeasure第14頁/共64頁Normalized-CutMeasure第15頁/共64頁Normalized-CutMeasure第16頁/共64頁Normalized-CutMeasureMinimize:第17頁/共64頁Normalized-CutMeasureHigh-energycutMinimize:第18頁/共64頁Normalized-CutMeasureLow-energycutMinimize:第19頁/共64頁RecursiveCoarsening第20頁/共64頁RecursiveCoarseningRepresentativesubset第21頁/共64頁RecursiveCoarseningForasalientsegment:,sparseinterpolationmatrix第22頁/共64頁WeightedAggregationaggregateaggregate第23頁/共64頁SegmentDetection第24頁/共64頁SWALinearin#ofpoints(afewdozenoperationsperpoint)DetectsthesalientsegmentsHierarchicalstructure第25頁/共64頁Coarse-ScaleMeasurementsAverageintensitiesofaggregatesMultiscaleintensity-variancesofaggregatesMultiscaleshape-momentsofaggregatesBoundaryalignmentbetweenaggregates第26頁/共64頁Adaptivevs.RigidMeasurementsAveragingOuralgorithm-SWAGeometricOriginal第27頁/共64頁Ouralgorithm-SWAAdaptivevs.RigidMeasurementsInterpolationGeometricOriginal第28頁/共64頁RecursiveMeasurements:Intensityaggregateintensityofpixeli

averageintensityofaggregate第29頁/共64頁UseAveragestoModifytheGraph第30頁/共64頁UseAveragestoModifytheGraph第31頁/共64頁TextureExamples第32頁/共64頁IsotropicandOrientedFiltersTextonsbyK-MeansMaliketalIJCV2001Abrieftutorial第33頁/共64頁IsotropicTextureinSWAIntensityVarianceIsotropicTextureofaggregate–averageofvariancesinallscales第34頁/共64頁IsotropicTextureinSWAIntensityVarianceIsotropicTextureofaggregate–averageofvariancesinallscales第35頁/共64頁IsotropicTextureinSWAIntensityVarianceIsotropicTextureofaggregate–averageofvariancesinallscales第36頁/共64頁OrientedTextureinSWAShapeMomentsOrientedTextureofaggregate–orientation,widthandlengthinallscalescenterofmasswidthlengthorientationwithMeiravGalun第37頁/共64頁Gestalt–PerceptualGroupingAbriefTutorialSharon,Brandt,BasriPAMI2000:ShashuaandUllmanICCV1988:Groupcurvesby:ProximityCo-linearity第38頁/共64頁BoundaryIntegrityinSWA第39頁/共64頁SharpentheAggregatesTop-downSharpening:

ExpandcoreSharpenboundaries第40頁/共64頁Hierarchy

inSWA第41頁/共64頁ExperimentsOurSWAalgorithm(CVPR’00+CVPR’01)

run-time:5-10seconds.Normalizedcuts(ShiandMalik,PAMI’00;Maliketal.,IJCV’01)

run-time:about10-15minutes.

SoftwarecourtesyofDoronTal,UCBerkeley.imagesonapentiumIII1000MHzPC:第42頁/共64頁IsotropicTexture-HorseIOurAlgorithm(SWA)NormalizedCuts第43頁/共64頁IsotropicTexture-HorseIIOurAlgorithm(SWA)NormalizedCuts第44頁/共64頁IsotropicTexture-TigerNormalizedCutsOurAlgorithm(SWA)第45頁/共64頁IsotropicTexture-ButterflyOurAlgorithm(SWA)NormalizedCuts第46頁/共64頁IsotropicTexture-LeopardOurAlgorithm(SWA)第47頁/共64頁IsotropicTexture-DalmatianDogOurAlgorithm(SWA)第48頁/共64頁IsotropicTexture-SquirrelOurAlgorithm(SWA)NormalizedCuts第49頁/共64頁FullTexture-SquirrelOurAlgorithm(SWA)NormalizedCutswithMeiravGalun第50頁/共64頁FullTexture-CompositionOurAlgorithm(SWA)withMeiravGalun第51頁/共64頁FullTexture–LionCubOurAlgorithm(SWA)withMeiravGalun第52頁/共64頁FullTexture–PolarBearOurAlgorithm(SWA)withMeiravGalun第53頁/共64頁FullTexture–PenguinOurAlgorithm(SWA)withMeiravGalun第54頁/共64頁FullTexture–LeopardOurAlgorithm(SWA)withMeiravGalun第55頁/共64頁FullTexture-ZebraOurAlgorithm(SWA)withMeiravGalun第56頁/共64頁SegmentationbyWeightedAggregationEfficientapproximationtoNcut-likemeasuresRecursivecomputationofmultiscalemeasurementsNoveladaptivepyramidrepresentingtheimage第57頁/共64頁MatchingExperiment(ChenBrestel)第58頁/共64頁MatchingExperiment(ChenBrestel)第59頁/共64頁MatchingExperiment(ChenBrestel)第60頁/共64頁Experiments–ClusteringSilho

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