Applied Optics · 1984 · 292 citations · 9 references
ComputingComputer ScienceComputer VisionMachine LearningStatistical LearningDigital Image ProcessingDigital Signal ProcessingFeature DetectionImage ClassificationPattern RecognitionSignal ProcessingBasis Function ConstructionCorrelation MatrixCorrelation Matrix ModelingFilter SynthesisMatched FilteringPattern DistortionPattern Recognition ModelsSpatial Filter Design
A most attractive approach to distortion-invariant pattern recognition uses a synthetic discriminant function (SDF) as the matched spatial filter in a correlator. In this paper, we (1) provide a general basis function and hyperspace description of SDFs, (2) advance a derivation showing the generality of the correlation matrix observation space that we use in our filter synthesis, and (3) detail a unified SDF filter synthesis technique for five different types of pattern recognition problem.
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Multivariant technique for multiclass pattern recognition
Charles F. Hester, David Casasent · Applied Optics · 1980 · 388 citations
Improved Discrimination in Optical Character Recognition
H. John Caulfield, W. T. Maloney · Applied Optics · 1969 · 191 citations