形态学处理MATLAB函数简介

图像形态学处理函数简介1结构元素创建函数strel

CreatemorphologicalstructuringelementSyntaxSE=strel(shape,parameters)DescriptionSE=strel(shape,parameters)createsastructuringelement,SE,ofthetypespecifiedbyshape.Thistablelistsallthesupportedshapes.Dependingonshape,strelcantakeadditionalparameters.Seethesyntaxdescriptionsthatfollowfordetailsaboutcreatingeachtypeofstructuringelement1结构元素创建函数1结构元素创建函数SE=strel('arbitrary',NHOOD)createsaflatstructuringelementwhereNHOODspecifiestheneighborhood.floor((size(NHOOD)+1)/2)1结构元素创建函数SE=strel('diamond',R)createsaflat,diamond-shapedstructuringelement,whereRspecifiesthedistancefromthestructuringelementorigintothepointsofthediamond.

1结构元素创建函数SE=strel('disk',R,N)createsaflat,disk-shapedstructuringelement,whereRspecifiestheradius1结构元素创建函数SE=strel('line',LEN,DEG)createsaflat,linearstructuringelement,whereLENspecifiesthelength,andDEGspecifiestheangle(indegrees)oftheline1结构元素创建函数SE=strel('pair',OFFSET)createsaflatstructuringelementcontainingtwomembers.Onememberislocatedattheorigin.Thesecondmember'slocationisspecifiedbythevectorOFFSET.2图像腐蚀函数imerodeErodeimageSyntaxIM2=imerode(IM,SE)IM2=imerode(IM,NHOOD)IM2=imerode(IM,SE,PACKOPT,M)IM2=imerode(...,PADOPT)2图像腐蚀函数originalBW=imread('circles.png');se=strel('disk',11);erodedBW=imerode(originalBW,se);imview(originalBW)imview(erodedBW)3图像膨胀函数imdilateDilateimageSyntaxIM2=imdilate(IM,SE)IM2=imdilate(IM,NHOOD)IM2=imdilate(IM,SE,PACKOPT)IM2=imdilate(...,PADOPT)3图像膨胀函数I=imread('cameraman.tif');se=strel('ball',5,5);I2=imdilate(I,se);imshow(I),title('Original')figure,imshow(I2),title('Dilated')4图像开运算函数imopenOpenanimageSyntaxIM2=imopen(IM,SE)IM2=imopen(IM,NHOOD)5图像闭运算函数imcloseCloseanimageSyntaxIM2=imclose(IM,SE)IM2=imclose(IM,NHOOD)6边界消除函数imclearborder

SuppresslightstructuresconnectedtoimageborderSyntaxIM2=imclearborder(IM)IM2=imclearborder(IM,CONN)Descriptionsuppressesstructuresthatarelighterthantheirsurroundingsandthatareconnectedtotheimageborder.7图像填充函数imfill

FillimageregionsSyntaxBW2=imfill(BW,locations)BW2=imfill(BW,'holes')I2=imfill(I)BW2=imfill(BW)[BW2locations]=imfill(BW)BW2=imfill(BW,locations,CONN)BW2=imfill(BW,CONN,'holes')I2=imfill(I,CONN)7图像填充函数Fillintheholesofabinaryimage.BW4=im2bw(imread('coins.png'));BW5=imfill(BW4,'holes');imview(BW4),imview(BW5)7图像填充函数Fillintheholesofanintensityimage.I=imread('tire.tif');I2=imfill(I,'holes');imview(I),imview(I2)8举例：用图像分割检测细胞Step1:ReadImageStep2:DetectEntireCellStep3:FillGapsStep4:DilatetheImageStep5:FillInteriorGapsStep6:RemoveConnectedObjectsonBorderStep7:SmooththeObject8举例：用图像分割检测细胞

步骤1：读入图像I=imread('cell.tif');figure,imshow(I)title('originalimage')8举例：用图像分割检测细胞步骤2：边缘检测BWs=edge(I,'sobel',(graythresh(I)*.1));figureimshow(BWs)

title('binarygradientmask')8举例：用图像分割检测细胞步骤3：创建结构元素se90=strel('line',3,90);se0=strel('line',3,0);步骤4；膨胀图像BWsdil=imdilate(BWs,[se90se0]);figure,imshow(BWsdil)title('dilatedgradientmask')8举例：用图像分割检测细胞步骤5:填充内部空洞BWdfill=imfill(BWsdil,'holes');figure,imshow(BWdfill);title('binaryimagewithfilledholes');8举例：用图像分割检测细胞步骤6：消除与边界相连的目标BWnobord=imclearborder(BWdfill,4);figure,imshow(BWnobord),title('