指纹识别技术及其实现_matlab_指纹识别matlab_指纹检测MATLAB_

%分割 M =3; %3*3 H = m/M; L= n/M; aveg1=zeros(H,L); var1=zeros(H,L); % 计算每一块的平均值 for x=1:H; for y=1:L; aveg=0;var=0; for i=1:M; for j=1:M; aveg=I(i+(x-1)*M,j+(y-1)*M)+aveg; end end aveg1(x,y)=aveg/(M*M); % 计算每一块的方差值 for i=1:M; for j=1:M; var=(I(i+(x-1)*M,j+(y-1)*M)-aveg1(x,y)).^2+var; end end var1(x,y)=var/(M*M); end end Gmean=0;Vmean=0; for x=1:H for y=1:L Gmean=Gmean+aveg1(x,y); Vmean=Vmean+var1(x,y); end end Gmean1=Gmean/(H*L);%所有块的平均值 Vmean1=Vmean/(H*L);%所有块的方差 gtemp=0;gtotle=0;vtotle=0;vtemp=0; for x=1:H for y=1:L if Gmean1>aveg1(x,y) gtemp=gtemp+1; gtotle=gtotle+aveg1(x,y); end if Vmean1<var1(x,y) vtemp=vtemp+1; vtotle=vtotle+var1(x,y); end end end G1=gtotle/gtemp;V1=vtotle/vtemp; gtemp1=0;gtotle1=0;vtotle1=0;vtemp1=0; for x=1:H for y=1:L if G1<aveg1(x,y) gtemp1=gtemp1-1; gtotle1=gtotle1+aveg1(x,y); end if 0<var1(x,y)<V1 vtemp1=vtemp1+1; vtotle1=vtotle1+var1(x,y); end end end G2=gtotle1/gtemp1;V2=vtotle1/vtemp1; e=zeros(H,L); for x=1:H for y=1:L if aveg1(x,y)>G2 && var1(x,y)<V2 e(x,y)=1; end if aveg1(x,y)< G1-100 && var1(x,y)< V2 e(x,y)=1; end end end for x=2:H-1 for y=2:L-1 if e(x,y)==1 if e(x-1,y) + e(x-1,y+1) +e(x,y+1) + e(x+1,y+1) + e(x+1,y) + e(x+1,y-1) + e(x,y-1) + e(x-1,y-1) <=4 e(x,y)=0; end end end end Icc = ones(m,n); for x=1:H for y=1:L if e(x,y)==1 for i=1:M for j=1:M I(i+(x-1)*M,j+(y-1)*M)=G1; Icc(i+(x-1)*M,j+(y-1)*M)=0; end end end end end figure, imshow(uint8(I));title('分割');