MATLAB: How to get all file extentions from a folder

file extensions

Hello everyone,

I have a folder which can contain images in different formats like .png, .jpg, .tif, …and so on.

How can I get the information which extensions are present in the folder?

Best regards

Best Answer

Try this

files = dir('*');
files([files.isdir]) = [];
[~, ~, ext] = cellfun(@(fn) fileparts(fn), {files.name}, 'uni', 0);
ext = unique(ext);

Related Solutions

MATLAB: How to use different file format in MATLAB

Just get all the files in the directory and keep only the ones with the extensions you want. You could even get the list of all valid image extension from imformats:

%option 1:
extensions = {'bmp', 'tif', jpg'}; %define allowed extensions yourself
%option 2:
registry = imformats; %get all image type supported by matlab
extensions = [registry.ext]; %and get their extensions
allfiles = dir(fullfile(somepath, '*.*')); 
isimage = arrayfun(@(f) ~f.isdir && any(strcmp(regexp(f.name, '\.(.*)$', 'tokens', 'once'), extensions')), allfiles);
imagefiles = allfiles(isimage);
for imagefile = imagefiles'
    Im = imread(fullfile(somepath, imagefile.name));
    ...
end

MATLAB: Get path to all files in a folder of images

% Directory
directory = 'C:\Datasets\nyu\train\';
img_dir = fullfile(directory, 'image_02');
depth_dir = fullfile(directory, 'depth');
image_rgb_info  = dir( fullfile(img_dir, '*.jpg'));
image_rgb_filenames = fullfile(img_dir, {image_rgb_info.name} );
image_depth_info = dir( fullfile(depth_dir, '*.png'));
image_depth_filenames = fullfile(depth_dir, {image_depth_info.name} );

Best Answer

Related Solutions

MATLAB: How to use different file format in MATLAB

MATLAB: Get path to all files in a folder of images

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