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关于图形图像模糊处理
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DigitizingtheamplitudevaluesofthesamplevaluesL=f[i;j]iscalledquantization,thequantizationleveldeterminesthenumberofgreylevels,thatisthegrayresolutioninthedigitizedimage.Unlikesampling(wherewesawthatundersuitableconditionsexactreconstructionispossible),quantizationisgenerallyirreversibleandresultsinlossofinformation.Itthereforeintroducesdistortionintothequantizedsignalthatcannotbeeliminated.
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