资源简介
快速人脸定位matlab程序,准确的确定人脸,然后定位
代码片段和文件信息
clear all
close all
clc
%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 读入待检测图像
x= imread(‘1.jpg‘);
xx=x;
figure
imshow(x);
fR=xx(::1);
fG=xx(::2);
fB=xx(::3);
f=1/9*ones(3);%低通滤波器,滤除高频噪声
filtered_fR=imfilter(fRf);
filtered_fG=imfilter(fGf);
filtered_fB=imfilter(fBf);
x_filtered=cat(3filtered_fRfiltered_fGfiltered_fB);
figure
imshow(x_filtered);
I=rgb2ycbcr(x); %颜色空间转换
gray=rgb2gray(x);
figure
imshow(gray);
[abc]=size(I); %得到图像的像素点个数
cb=double(I(::2));
cr=double(I(::3));
for i=1:a
for j=1:b
w=[cb(ij)cr(ij)];
m=[117.4316 148.5599];
n=[260.1301 12.1430;12.1430 150.4574];
p(ij)=exp((-0.5)*(w-m)*inv(n)*(w-m)‘);%算某象素点的概率
if (p(ij)<0.5)
p(ij)=0;
else
p(ij)=1;
end
end
end
fenge=p;
figure
imshow(fenge);
SE = strel(‘square‘3);
imf=imopen(pSE); %开运算(即先腐蚀再膨胀),消除杂散点
xingtai=imf;
figure
imshow(xingtai);
%figureimshow(Ibwopen);
%Ibwoc=imclose(IbwopenSE); %闭运算,去掉由于开运算引入的许多缺口
%figureimshow(Ibwoc);
%imf=imfill(Ibwoc‘holes‘); %填充孔洞
%%%%%%%%%%%%%%%%%%%%%%%根据填充率去除手脚、胳膊等非人脸区域%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[Lnum]=bwlabel(imf8); %连通区域标记
B=zeros(size(imf));
for i=1:num
Area(i)=bwarea(L==i);%计算每个皮肤区域的面积
end
for i=1:num
[rc] = find(L==i) ;
left(i)=min(c);
right(i)=max(c);
up(i)=min(r);
down(i)=max(r);
end
for i=1:num
%计算各矩形区域面积
Rect_Area(i)=(down(i)-up(i))*(right(i)-left(i));
end
%计算各区域的填充率
Ratio=Area./Rect_Area;
for i=1:n
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