MATLAB: Rename files from subfolders

rename images

I have a folder that contain 10 subfolders each subfolder contains 4 images named 1.bmp,2.bmp,3.bmp,4.bmp, I want to rename those images to 9.bmp,10.bmp,11.bmp,12.bmp like that how i can?

Best Answer

Get all files structure to one variable

cd <your directory>
d = dir('**/*.bmp')

Apply loop to get every file to structure

filename_full = fullfile(d(loop variable).folder, d(loop variable).name);
[~, filename, ext] = fileparts(filename_full);

check file names use ifelse condition

if strcmp(filename, '1');
    filename = '9'  % so to all other 3 files
end

concatanate all string to form renamed path

filename_full_ren = fullfile(d(loop variable).folder,[filename, ext]);

then rename file by moving

movefile(filename_full, filename_full_ren);

You are done

Related Solutions

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} );

MATLAB: Rename jpg files in a folder

Try this:

folder = pwd; % Wherever your input images are stored.
outputFolder = fullfile(folder, '/renamed'); % Can be the same as the input folder if you want.
% Make output folder if it exists.
if ~isfolder(outputFolder)
	mkdir(outputFolder)
end
fileList = dir('*.bmp')
% Loop over all files.
for k = 1 : length(fileList)
	% Get this filename.
	thisFileName = fullfile(fileList(k).folder, fileList(k).name);
	% Find out just the base filename without the folder.
	[~, baseFileNameNoExt, ext] = fileparts(thisFileName);
	number = str2double(baseFileNameNoExt);
	% Skip non-numbers
	if isnan(number)
		continue;
	end
	fprintf('Processing %s...\n', thisFileName);
	
	% Optionally display the image
% 	% Read in the input image.
% 	originalImage = imread(thisFileName);
% 	% Display it.
% 	imshow(originalImage);
% 	drawnow;
	% Create the new base filename without the folder.
	baseOutputFileName = sprintf('%3.3d%s', number, ext);
	% Create output image filename....
	fprintf('   Renaming to %s to %s...\n', baseFileNameNoExt, baseOutputFileName);
	% Create the output filename which will be in the output folder.
	outputFileName = fullfile(outputFolder, baseOutputFileName);
 	movefile(thisFileName, outputFileName); % or imwrite()
end
message = sprintf('Done processing %d images', length(fileList))
uiwait(helpdlg(message));

If you want to save the renamed files in a different folder, use imwrite(), otherwise if you want to rename in the same folder use movefile().

Best Answer

Related Solutions

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

MATLAB: Rename jpg files in a folder

Related Question