matlab代码求解读1

代码本身是在CSDN上下载其他老哥分享出来的包，用途是对图像进行处理，截出人脸部分并保存。根据自己的实际情况，我对主函数进行了一定少量修改，目前程序已经能正常跑通了。但是其中有很多被调用的.m文件，我并没有看明白处理过程，希望有好心的人指点一下。比如我下面列出的buildDetector从一开始参数输入我就不太理解，直接空括号输入，这个函数的处理过程是怎样的呀

主函数

currentPath = 'D:\Graduation project\T\'; 
image = imageDatastore(fullfile(currentPath),'IncludeSubfolders',true,'LabelSource','foldernames');
SavePath = 'D:\Graduation project\save\';
numImages = length(image.Files);
imagedata = readimage(image,2); 
tt = image.Files(2);
tt1 = regexp(tt,'\','split');
cellLength =  cellfun('length',tt1);
imagename = char(tt1{1}(1,cellLength));
save_path=[SavePath,imagename];
detector = buildDetector();
[bbox, bbimg, faces, bbfaces] = detectFaceParts(detector,imagedata,0);
for a=1:size(bbfaces,1)
   imwrite(bbfaces{a},save_path);
end

其中被调用的buildDetector.m

function detector = buildDetector( thresholdFace, thresholdParts, stdsize )

if( nargin < 1 )
 thresholdFace = 1;
end

if( nargin < 2 )
 thresholdParts = 1;
end

if( nargin < 3 )
 stdsize = 176;
end

nameDetector = {'LeftEye'; 'RightEye'; 'Mouth'; 'Nose'; };
mins = [[12 18]; [12 18]; [15 25]; [15 18]; ];

detector.stdsize = stdsize;
detector.detector = cell(5,1);
for k=1:4
 minSize = int32([stdsize/5 stdsize/5]);
 minSize = [max(minSize(1),mins(k,1)), max(minSize(2),mins(k,2))];
 detector.detector{k} = vision.CascadeObjectDetector(char(nameDetector(k)), 'MergeThreshold', thresholdParts, 'MinSize', minSize);
end

detector.detector{5} = vision.CascadeObjectDetector('FrontalFaceCART', 'MergeThreshold', thresholdFace);

这是原文件下载地址
https://download.csdn.net/download/qq_36841127/10741409?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522165123455016781683998199%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=165123455016781683998199&biz_id=1&utm_medium=distribute.pc_search_result.none-task-download-2~download~baidu_landing_v2~default-1-10741409.pc_v2_rank_dl_default&utm_term=matlab%E8%87%AA%E5%8A%A8%E6%88%AA%E5%8F%96%E4%BA%BA%E8%84%B8%E5%B9%B6%E4%BF%9D%E5%AD%98&spm=1018.2226.3001.4451.1

解读的非常好！