人脸检测带详细注解.docVIP

close all clear all clc %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%reading an image读图 %I=imread(IMG_0141.JPG); %I=imread(test1.JPG); I = imread(IMG_0142.JPG); %I = imread(IMG_0143.JPG); %I = imread(IMG_0146.JPG); [Ix,Iy,Iz]=size(I);坐标 if Ix400Iy300 %%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%reducing the scale of image, let the high is 400.降低图像的，让高400 I=imresize(I,[400,Iy*400/Ix],nearest);调整 end figure imshow(I) title(normal image) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%skin detection 皮肤检测 I=double(I); %converting the integer into decimal fraction小数转换整数 [hue,s,v]=rgb2hsv(I); %converting RGB space into HSV space cb=0.148*I(:,:,1)-0.291*I(:,:,2)+0.439*I(:,:,3)+128;%converting RGB space into YCrCb space cr=0.439*I(:,:,1)-0.368*I(:,:,2)-0.071*I(:,:,3)+128; [w h]=size(I(:,:,1)); %size of the image 为什么rgb要转hsv 再转 ycbcr %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%% let the skin pels points in the YCrCb space as 1,让皮肤像素点为1的YCrCb空间 for i=1:w for j=1:h % segmenting the yellow skin colour areas 分割肤色区域 if 145=cr(i,j)cr(i,j)=165145=cb(i,j)cb(i,j)=1800.01=hue(i,j)hue(i,j)=0.15 segment(i,j)=1; %skin areas else segment(i,j)=0; end end end figure imshow(segment); %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%% processing on the detected areas,加工检测区域 形态学 skin=segment;分割 % removing small connected pixels消除小连接的像素 skin=bwareaopen(skin,round(w*h/900))%dilating扩大 se=strel(disk,5);创建结构区域 skin=imdilate(skin,se); 扩大图像 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%display skin areas 显示皮肤区域 im(:,:,1)=I(:,:,1).*skin; im(:,:,2)=I(:,:,2).*skin; im(:,:,3)=I(:,:,3).*skin; figure imshow(uint8(im)); title(skin areas) %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%% detection of face object,检测对象的脸 BW = skin; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%% marking the connected areas,标志连接区 L = bwlabel(BW,8);8为默认连接对象 %