read and rename a group of photos

Hello every body,

I have two sets of groups of photos with around 1000 pictures for each set. Anyhow, both of them have the same sequence of names, they start from Image00000_IR1 to Image00999_IR1. What I want is rename the second set of pictures, so they should start from Image01000_IR1 to Image01999_IR1, so I could put them together in one folder and they will start from Image00000_IR1 to Image01999_IR1.

Is there a way that we could that in matlab?

Thanks in advance.

Answer 1

[Image Analyst]

Try this:

clc;    % Clear the command window.
close all;  % Close all figures (except those of imtool.)
clear;  % Erase all existing variables. Or clearvars if you want.
workspace;  % Make sure the workspace panel is showing.
format short g;
format compact;
fontSize = 15;
fprintf('Beginning to run %s.m ...\n', mfilename);

% Specify the folder where the files live.
myFolder = pwd;  %'C:\Users\yourUserName\Documents\My Pictures';
% Check to make sure that folder actually exists.  Warn user if it doesn't.
if ~isfolder(myFolder)
	errorMessage = sprintf('Error: The following folder does not exist:\n%s\nPlease specify a new folder.', myFolder);
	uiwait(warndlg(errorMessage));
	myFolder = uigetdir(); % Ask for a new one.
	if myFolder == 0
		% User clicked Cancel
		return;
	end
end
% Specify the output folder.
outputFolder = fullfile(myFolder, 'Renamed');
if ~isfolder(outputFolder)
	% Create the output folder if it doesn't exist.
	mkdir(outputFolder);
end

% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile(myFolder, '*.png'); % Change to whatever pattern you need.
theFiles = dir(filePattern);
for k = 1 : length(theFiles)
	inputBaseFileName = theFiles(k).name;
	inputFullFileName = fullfile(theFiles(k).folder, inputBaseFileName);
	fprintf(1, 'Now reading file %d of %d : "%s"\n', k, length(theFiles), inputFullFileName);
	
	% Extract the number between indexes 6 and 11.
	if length(inputBaseFileName) < 11
		% Name is not correct because it's too short.
		fprintf(1, '   Skipping file "%s" because it does not have a number.\n', inputBaseFileName);
		continue;
	end
	inputNumber = str2double(inputBaseFileName(6:11));
	if isnan(inputNumber)
		% Does not have a 5 digit number so skip it.
		fprintf(1, '   Skipping file "%s" because it does not have a number.\n', inputBaseFileName);
		continue;
	end
	% For the output number, add a thousand to it
	outputNumber = sprintf('%5.5d', inputNumber + 1000); % a string.
	
	% Create the output name
	outputBaseFileName = [inputBaseFileName(1:5), outputNumber, inputBaseFileName(12:end)];
	outputFullFileName = fullfile(outputFolder, outputBaseFileName);
	
	% Now read it in as an image array with imread()
	imageArray = imread(inputFullFileName);
	imshow(imageArray);  % Display image.
	drawnow; % Force display to update immediately.
	
	% Make a copy with the new filename in the output folder.
	fprintf(1, '  Copying it to  %s\n', outputFullFileName);
	copyfile(inputFullFileName, outputFullFileName);
end

fprintf('Done running %s.m.\n', mfilename);

[Mohanned Al Gharawi]

I did the code, but there are no new files, just an empty folder named Renamed!

Any suggestion for that?

[Image Analyst]

I tried it and it worked. What extension did you use? PNG, or TIF or what???

How many files were in theFiles ?

filePattern = fullfile(myFolder, '*.png'); % Change to whatever pattern you need.
theFiles = dir(filePattern)
message = sprintf('Found %d files in folder:\n%s', length(theFiles), myFolder)
uiwait(helpdlg(message))

[Mohanned Al Gharawi]

my extension is mim, they are infrared photos. Anyhow, I changed the extension in the code, and there are 1000 imgaes in the folder.

[Mohanned Al Gharawi]

when I rund the line

inputNumber = str2double(inputBaseFileName(6:11));

It gives me NaN!!!

I think there is an issue at that line!

[Image Analyst]

Then it should work after you get rid of the call to imread() and imshow(). Does it not work after removing those?

[Image Analyst]

Mohanned's answer moved here:

The run works but there are no new imgaes inside the folder Rename. On the Command Window, it keeps telling this messege for the all photos that I have:

"Skipping file "Image00000_IR1.mim" because it does not have a number."!!

I dont knw why it says that. Any idea about that?

[Image Analyst]

Sorry, you need to go from 6 to 10, not 6 to 11 (which was including the underline). This works:

clc;    % Clear the command window.
close all;  % Close all figures (except those of imtool.)
clear;  % Erase all existing variables. Or clearvars if you want.
workspace;  % Make sure the workspace panel is showing.
format short g;
format compact;
fprintf('Beginning to run %s.m ...\n', mfilename);

% Specify the folder where the files live.
myFolder = pwd;  %'C:\Users\yourUserName\Documents\My Pictures';
% Check to make sure that folder actually exists.  Warn user if it doesn't.
if ~isfolder(myFolder)
	errorMessage = sprintf('Error: The following folder does not exist:\n%s\nPlease specify a new folder.', myFolder);
	uiwait(warndlg(errorMessage));
	myFolder = uigetdir(); % Ask for a new one.
	if myFolder == 0
		% User clicked Cancel
		return;
	end
end
% Specify the output folder.
outputFolder = fullfile(myFolder, 'Renamed');
if ~isfolder(outputFolder)
	% Create the output folder if it doesn't exist.
	mkdir(outputFolder);
end

% Get a list of all files in the folder with the desired file name pattern.
filePattern = fullfile(myFolder, 'Image*.mim'); % Change to whatever pattern you need.
theFiles = dir(filePattern);
for k = 1 : length(theFiles)
	inputBaseFileName = theFiles(k).name;
	inputFullFileName = fullfile(theFiles(k).folder, inputBaseFileName);
	fprintf(1, 'Now reading file %d of %d : "%s"\n', k, length(theFiles), inputFullFileName);
	
	% Extract the number between indexes 6 and 11.
	if length(inputBaseFileName) < 11
		% Name is not correct because it's too short.
		fprintf(1, '   Skipping file "%s" because the name is too short.\n', inputBaseFileName);
		continue;
	end
	inputNumber = str2double(inputBaseFileName(6:10));
	if isnan(inputNumber)
		% Does not have a 5 digit number so skip it.
		fprintf(1, '   Skipping file "%s" because it does not have a number.\n', inputBaseFileName);
		continue;
	end
	% For the output number, add a thousand to it
	outputNumber = sprintf('%5.5d', inputNumber + 1000); % a string.
	
	% Create the output name
	outputBaseFileName = [inputBaseFileName(1:5), outputNumber, inputBaseFileName(12:end)];
	outputFullFileName = fullfile(outputFolder, outputBaseFileName);
	
	% Make a copy with the new filename in the output folder.
	fprintf(1, '  Copying it to  %s\n', outputFullFileName);
	copyfile(inputFullFileName, outputFullFileName);
end

fprintf('Done running %s.m.\n', mfilename);

[Mohanned Al Gharawi]

It works finally, thanks!! but it doesn't write the underline in the new images, instead of writing "Image01000_IR1 ", it writes "Image01000IR1". How can I include the underline in the images name.

[Image Analyst]

11 is the underline, so just include from 11 onwards:

outputBaseFileName = [inputBaseFileName(1:5), outputNumber, inputBaseFileName(11:end)];

[Mohanned Al Gharawi]

It worked, I really appreciate your help. Thank you.

Answer 2

[Image Analyst]

See the FAQ:

https://matlab.fandom.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

In the middle of the loop, put a call to movefile() to do renaming.

[Mohanned Al Gharawi]

Image Analyst thank you for replying, I didn't get it very well. Is there any other way to do that?

Thank you