1 clear;
 2 clc
 3 
 4 folder = 'Training_Data/Train';  %图片存储的路径
 5 savepath = 'trainNew/';　　　　　　%目标存储位置
 6 filepaths = dir(fullfile(folder,'*.bmp'));
 7 
 8 for i = 1 : length(filepaths)
 9     
10     image = imread(fullfile(folder,filepaths(i).name));
11     image = rgb2ycbcr(image);　　　　　　%RGB转YCbCr
12     image = im2double(image(:, :, 1));
13     imageName=filepaths(i).name;　　　　%获取原图片的名字字符串
14     saveStr= [savepath imageName];　　　%设置存储路径+命名
15     imwrite(image, saveStr);
16     
17 end