2、该算法。实验结果表明,改进后的算法较传统的Canny算法取得更好的边缘检测效果。关键词:图像处理;边缘检测;Canny算子;滤波;自适应阈值42ABSTRACTEdgedetection is mainlyaimedatmeasurement,detectionandlocationofthechangeofimageintensity,itsessenceisto extract thecharacteristicofthediscontinuouspartsofimages.Sotheedgedetectionispartoftheimagesegmentatio
3、n.Edgedetectionisthepremiseofdigitalimageprocession,itsdetectionresultplaysanimportantimpressiononthenextprocessing,suchasimagecompression,computervision,patternrecognition,andsoon.Hence,thestudyofithaspracticalsignificance andtheoreticalsignificance,anditoccupies averyimportantrole ine
4、ngineeringapplications.Thispapermakesan in-depthstudy on the theory andalgorithms of edgedetection.Basedonspecificanalysisof various types of traditional edge detectionalgorithm,thispaper focuseson the Cannyalgorithm.Inthispaper,weuse theSigmasmoothingfiltertoimprovethefilteringofCanny,
5、 andthe improved MECtorefinethedual-threshold in theCannyalgorithm tomakethethreshadaptive. Finally, usingMATLAB softwaretools to implementthealgorithm. The experimentalresultsshowthattheimprovedalgorithm gainsbetter edge detectionresults than the traditionalCannyalgorithm.Keywords:Imag