基于MATLAB的人脸识别源程序

基于MATLA酌人脸识别源程序1•色彩空间转换function [r,g]=rgb_RGB(Ori_Face)

R=0ri_Face(:,:,1);

G=0ri_Face(:,:,2);

B=Ori_Face(:,:,3);

R1=im2double(R); % 将uint8 型转换成double型

G1=im2double(G);

B1=im2double(B);

RGB=R1+G1+B1;

row=size(Ori_Face, 1); %行像素

column=size(Ori_Face,2); %列像素for i=1:row

for j=1:column

rr(i,j)=R1(i,j)/RGB(i,j);

gg(i,j)=G1(i,j)/RGB(i,j);

end

end

rrr=mean(rr);

r=mean(rrr);

ggg=mean(gg);

g=mean(ggg); 2•均值和协方差

皮肤库\2・jpg');[r2,g2]=rgb_RGB(t2);

皮肤库\3・jpg');[r3,g3]=rgb_RGB(t3);

皮肤库\4・jpg');[r4,g4]=rgb_RGB(t4);

皮肤库\5・jpg');[r5,g5]=rgb_RGB(t5);

皮肤库\6・jpg');[r6,g6]=rgb_RGB(t6);

皮肤库\7・jpg');[r7,g7]=rgb_RGB(t7);

皮肤库\8・jpg');[r8,g8]=rgb_RGB(t8);

皮肤库\9・jpg');[r9,g9]=rgb_RGB(t9);

皮肤库\10・jpg');[r10,g10]=rgb_RGB(t10); 皮肤库\11・jpg');[r11,g11]=rgb_RGB(t11); 皮肤库\12・jpg');[r12,g12]=rgb_RGB(t12); 皮肤库\13・jpg');[r13,g13]=rgb_RGB(t13); 皮肤库\14・jpg');[r14,g14]=rgb_RGB(t14); 皮肤库\15・jpg');[r15,g15]=rgb_RGB(t15); 皮肤库\16・jpg');[r16,g16]=rgb_RGB(t16); 皮肤库\17・jpg');[r17,g17]=rgb_RGB(t17); 皮肤库\18・jpg');[r18,g18]=rgb_RGB(t18); 皮肤库\19・jpg');[r19,g19]=rgb_RGB(t19); 皮肤库\20・jpg');[r20,g20]=rgb_RGB(t20); 皮肤库\21・jpg');[r21,g21]=rgb_RGB(t21);

皮肤库\24・jpg');[r24,g24]=rgb_RGB(t24);

皮肤库\25・jpg');[r25,g25]=rgb_RGB(t25);

皮肤库\26・jpg');[r26,g26]=rgb_RGB(t26);

皮肤库\27・jpg');[r27,g27]=rgb_RGB(t27); r=cat(1,r1,r2,r3,r4,r5,r6,r7,r8,r9,r10,r11,r12,r13,r14,r15,r16,r17,r18, r19,r20,r21,r22,r23,r24,r25,r26,r27);

g=cat(1,g1,g2,g3,g4,g5,g6,g7,g8,g9,g10,g11,g12,g13,g14,g15,g16,g17,g1 8,g19,g20,g21,g22,g23,g24,g25,g26,g27);

m=mean([r,g])

n=cov([r,g])

3•求质心

function [xmean, ymean] = center(bw)

bw=bwfill(bw,'holes');

area = bwarea(bw);

[m n] =size(bw);

bw=double(bw);

xmean =0; ymean = 0;

for i=1:m,

for j=1:n,

xmean = xmean + j*bw(i,j);

ymean = ymean + i*bw(i,j);

end;

end;

if(area==0)

xmean=0;

ymean=0;

else

xmean = xmean/area;

ymean = ymean/area;

xmean = round(xmean);

ymean = round(ymean);

end

4.求偏转角度

function [theta] = orient(bw,xmean,ymean) [m n] =size(bw); bw=double(bw);

a = 0;

b = 0;

c = 0;

for i=1:m,

for j=1:n,

a = a + (j - xmean)A2 * bw(i,j);

b = b + (j - xmean) * (i - ymean) * bw(i,j);

c = c + (i - ymean)A2 * bw(i,j);

end;

end;

b = 2 * b;

theta = atan(b/(a-c))/2;

theta = theta*(180/pi); % 从幅度转换到角度5.找区域边界

function [left, right, up, down] = bianjie(A)

[m n] = size(A);

left = -1;

right = -1;

up = -1;

down = -1;

for j=1:n,

for i=1:m,

if (A(i,j) ~= 0)

left = j;

break;

end;

end;

if (left ~= -1) break;

end;