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自动化学报 2005
利用空间矩提取亚象素角特征, PP. 713-719 Keywords: Spatialmoment,cornerdetection,gradient-directioncorner,bilinearinterpolation Abstract: ?Anovelsubpixelcornerdetectionmethodbasedonspatialmomentisdevelopedinthispaper.Firstly,thespatial-moment-generatingfunction,gradientmagnitudeandvariationofgradient-directioncornerareusedasthedecisionruleofcornerdetectionbyanalyzingthemathematicalformulaofcorner-modelspatialmoment.ThenNon-maxsuppressiontechniqueisutilizedtodetectthevertexoffeaturecorner.Finally,inordertoimproveitslocalizationperformance,subpixelcornerdetectionisimplementedbythebilinearinterpolationandNewtoniterationmethod.ExperimentsillustratethatthespatialmomentcornerdetectorhasbetterrobustnessandlocalizationperformancethanKitchendetectorandHarrisdetector.
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