外文资料EdgeFeatureExtiactionBasedonDigitalImageProcessingTechniquesI.INTRODUCTIONTlieedgeisasetofthosepixelswhosegieyhavestepchangeandrooftopchange,anditexistsbetweenobjectandbackground,objectandobject,regionandregion,andbetweenclementandclement.EdgealwaysindwellsintwoneigliboringareashavingdifferentgieylevelItistheresultofgreylevelbeingdiscontinuous.Edgedetectionisakindofmethodofimagesegmentationbasedonrangenon-continuity.Imageedgedetectionisoneofthebasalcontentsintheimageprocessingandanal
