一个人脸提取和识别的matlab代码

%%%%% Reading of a RGB image i=imread('face8.jpg'); I=rgb2gray(i); BW=im2bw(I); figure,imshow(BW) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%% minimisation of background portion [n1 n2]=size(BW); r=floor(n1/10); c=floor(n2/10); x1=1;x2=r; s=r*c; for i=1:10 y1=1;y2=c; for j=1:10 if (y2<=c | y2>=9*c) | (x1==1 | x2==r*10) loc=find(BW(x1:x2, y1:y2)==0); [o p]=size(loc); pr=o*100/s; if pr<=100 BW(x1:x2, y1:y2)=0; r1=x1;r2=x2;s1=y1;s2=y2; pr1=0; end imshow(BW); end y1=y1+c; y2=y2+c; end x1=x1+r; x2=x2+r; end figure,imshow(BW) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%% detection of face object L = bwlabel(BW,8); BB = regionprops(L, 'BoundingBox'); BB1=struct2cell(BB); BB2=cell2mat(BB1); [s1 s2]=size(BB2); mx=0; for k=3:4:s2-1 p=BB2(1,k)*BB2(1,k+1); if p>mx & (BB2(1,k)/BB2(1,k+1))<1.8 mx=p; j=k; end end figure,imshow(I); hold on; rectangle('Position',[BB2(1,j-2),BB2(1,j-1),BB2(1,j),BB2(1,j+1)],'EdgeColor','r' )