MATLAB批量读取图片，剪切，存储，放大

function[]=cropG()
% 从路径输入源图片---利用gt.txt剪切---输出到目标文件
ObjDir = \'G:\matlab_code\ori_image\Biker\Biker\img\\';%需要剪切的图片文件夹路径
OutputDir = \'G:\matlab_code\image\\'; %输出文件的路径
txtFile=\'G:\matlab_code\ori_image\Biker\Biker\groundtruth_rect.txt\';%txt文档的路径
flist=dir(sprintf(\'%s/*.jpg\',ObjDir));
for i=1:1:length(flist)
bgFile =[ObjDir,\'00\',int2str(i),\'.jpg\'];
outFile=[ OutputDir,\'00\',int2str(i),\'.jpg\'];
I_1=imread(bgFile);
gt=load(txtFile);
x=gt(i,1)-2;
y=gt(i,2)-2;
w=gt(i,3)+5;
h=gt(i,4)+5;
I=imcrop(I_1,[x,y,w,h]);
I_2=imresize(I,[640,640]);
imwrite(I_2,outFile);
end