循环读取文件夹中的图片matlab代码

参考：http://blog.csdn.net/guoxiaojie_415/article/details/21317323；http://blog.csdn.net/qikaihuting/article/details/70244416

本篇博文仅针对于循环读取指定文件夹下的图片文件，不涉及深度和层度遍历。

Function函数

function [subdirpath] = RangTraversal(strPath)

maindir = strPath; 　　//strPath是string类型的字符串
subdir  = dir(maindir);　　//
subdirpath = cell(1, length(subdir));

for j = 1 : length( subdir )
    if (~( isequal( subdir(j).name, ‘.‘ )|| isequal( subdir(j).name, ‘..‘))) %|| ~subdir(j).isdir
        subdirpath{j} = fullfile(maindir, subdir(j).name);
    end
end

调用RangTraversal函数

subdirpath  = RangTraversal( ‘../sampleImages‘ );
filename = cell(1, length(subdirpath));
path_ab = cell(1, length(subdirpath));
suffix = {‘.jpg‘, ‘.bmp‘, ‘.tiff‘, ‘.png‘};

for i = 1 : length(subdirpath)
   if(subdirpath{i} ~= 0)
       [path_ab{i}, filename{i}] = fileparts(subdirpath{i});
       rgb = imread(subdirpath{i});
       gray = rgb2gray(rgb);
       for j = 1 : length(suffix)
          path_wr = strcat(‘../results/savedimages/‘, [filename{i}, suffix{j}]);
          imwrite(gray, path_wr);
       end
   end
end

这段代码的作用是循环读取文件夹内的图片，然后将其灰度化，将灰度化后的图片存入新的文件夹。