,security,’putationingrayscale,noR,B,G,ALoudNoises!ImagescanhavenoiseinthemHeatwavesDustSmokeAcquisitionNoiseSolution:ConvolutionMaskSuppressesNoiseAveragesapixelwithsurroundingpixelsSimplemaskbelowScantheconvolutionmaskbelowacrossthetargetimage(dotproduct)Ignoretheedges,usuallydon’tmatter1/41/41/41/4DotProductApplied23451267901223446667362845658756789073134567881/41/41/41/4*=35BeforeConvolution:2345126790123544666736284565875678907313456788AfterConvolution:TableCurrentPixelOverlappedpixel’swithMask(neededfordotproduct)
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