MATLAB：从一个文件夹批量读取图像，处理后，批量存储到另一文件夹中

亲测有效。 

clc;
clear all;

rootdir='C:\Users\Cche\Documents\pic\pic1\';
subdir=dir(rootdir);
for i=1:length(subdir)
    subdirpath=fullfile(rootdir,subdir(i).name,'*.jpg');
    images=dir(subdirpath);
    for j=1:length(images)
        ImageName=fullfile(rootdir,subdir(i).name,images(j).name);
        ImageData=imread(ImageName);
        
        %rgb转灰度处理
        ImageData=rgb2gray(ImageData);
        
        saveddir='C:\Users\Cche\Documents\pic\pic2\';
        savedname=fullfile(saveddir,images(j).name);
        imwrite(ImageData,savedname);
    end
end