资源描述：
《MATLAB图像处理函数.doc》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。
1、MATLAB图像处理函数(一)(2008-12-1417:41:00)【收藏】【评论】【打印】【关闭】1．applylut功能：在二进制图像中利用lookup表进行边沿操作。语法：A=applylut(BW,lut)举例lut=makelut('sum(x(:))==4',2);BW1=imread('text.tif');BW2=applylut(BW1,lut);imshow(BW1)figure,imshow(BW2)相关命令：makelut 2．bestblk功能：确定进行块操作的块大小。语法：siz=bestblk([mn],k)[mb,
2、nb]=bestblk([mn],k)举例siz=bestblk([640800],72)siz=6450相关命令：blkproc 3．blkproc功能：实现图像的显式块操作。语法：B=blkproc(A,[mn],fun)B=blkproc(A,[mn],fun,P1,P2,...)B=blkproc(A,[mn],[mbordernborder],fun,...)B=blkproc(A,'indexed',...)举例I=imread('alumgrns.tif');I2=blkproc(I,[88],'std2(x)*ones(size(x
3、))');imshow(I)figure,imshow(I2,[]);相关命令：colfilt,nlfilter,inline 4．brighten功能：增加或降低颜色映像表的亮度。语法：brighten(beta)newmap=brighten(beta)newmap=brighten(map,beta)brighten(fig,beta)相关命令：imadjust,rgbplot 5．bwarea功能：计算二进制图像对象的面积。语法：total=bwarea(BW) 举例BW=imread('circles.tif');imshow(BW);b
4、warea(BW)ans=15799相关命令：bweuler,bwperim 6．bweuler．功能：计算二进制图像的欧拉数。语法：eul=bweuler(BW,n)举例BW=imread('circles.tif');imshow(BW);bweuler(BW)ans=–2相关命令：bwmorph,bwperim 7．bwfill功能：填充二进制图像的背景色。语法：BW2=bwfill(BW1,c,r,n)BW2=bwfill(BW1,n)[BW2,idx]=bwfill(...)BW2=bwfill(x,y,BW1,xi,yi,n)[x,y,
5、BW2,idx,xi,yi]=bwfill(...)BW2=bwfill(BW1,'holes',n)[BW2,idx]=bwfill(BW1,'holes',n)举例BW1=[1000000011111000100010101000111011110111100110101000101010001110]BW2=bwfill(BW1,3,3,8);BW2=1000000011111000111110101111111011110111100110101000101010001110I=imread('blood1.tif');BW3=~im2bw
6、(I);BW4=bwfill(BW3,'holes');imshow(BW3);figure,imshow(BW4)相关命令：bwselect,roifill8．bwlabel功能：标注二进制图像中已连接的部分。语法：L=bwlabel(BW,n)[L,num]=bwlabel(BW,n)举例BW=[1110000011101100111011001110001011100010111000101110011011100000]L=bwlabel(BW,4)L=11100000111022001110220011100030111000301110
7、00301110033011100000[r,c]=find(L==2);rc=[rc]相关命令：bweuler,bwselect9．bwmorph功能：提取二进制图像的轮廓。语法：BW2=bwmorph(BW1,operation)BW2=bwmorph(BW1,operation,n)举例BW1=imread('circles.tif');imshow(BW1);BW2=bwmorph(BW1,'remove');BW3=bwmorph(BW1,'skel',Inf);imshow(BW2)figure,imshow(BW3)相关命令：bweu
8、ler,bwperim,dilate,erode10．bwperim功能：计算二进制图像中对象的周长。语法：BW2=bwp
