Transcription of Chapter 9 Basic Signal Processing - cs.princeton.edu
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Chapter 9 Basic Signal Processing - cs.princeton.edu
Chapter9 BasicSignalProcessingMotivationManyaspec tsofcomputergraphicsandcomputerimagerydi fferfromaspectsofconventionalgraphicsand imagerybecausecomputerrepresentationsare digitalanddiscrete, previouslecturewediscussedtheimplication sofquantizingcontinuousorhighprecisionin tensityval-uesto continuousimageat a discretesetoflocations(usuallya regularlattice).Theimplicationsofthesamp lingprocessarequitesubtle,andtounderstan dthemfullyrequiresa framebufferholdsa saythatthediscreteimageisreconstructedto forma is oftenconvenienttothinkofeach2 Dpixelasa littlesquarethatabutsitsneighborstofillt heimageplane,thisviewofreconstructionis is bettertothinkofeachpixelasa surfacewhoseheightat a pointis singlesampleis thena spike.
Chapter 9 Basic Signal Processing ... Digital Signal Processing ... The key to understanding signal processing is to learn to think in the frequency do-
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