How to compare images from 2 folders

Hello.I have 2 folders of images and want to compare each image in folder 1 with each image in folder 2 in order to find almost similar images. I wrote the code but it can not open images in for loop.can any one help me plz? Here is my code:

    doc1 = dir('E:\fake1\*.jpg');
doc2 = dir('E:\fake2\*.jpg');
d_1 = size(doc1);
d_2 = size(doc2);
Inputs1 = {doc1.name}';
Inputs2 = {doc2.name}';
for I1 = 1:d_1;
    for I2 = 1:d_2;
    X_1 = imread([doc1 Inputs1{I1}]);
    X_2 = imread([doc2 Inputs2{I2}]);
    compare_images = imabsdiff(X_1,X_2);
    figure;
    imshow(compare_images);
    title('compare_images');
    %comp1 = imshowpair(X_1,X_2,'diff');
    end
end

Answer 1

[Image Analyst]

Fateme, this is in the FAQ: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F Look at the second code block.

[Fateme Jalali]

thanks

Answer 2

[Azzi Abdelmalek]

X_1 = imread(fullfile(doc1,Inputs1{I1}))

%or

X_1 = imread([doc1 '\' Inputs1{I1}])

[Fateme Jalali]

It does not work and error exists.this is the error: Undefined function or method 'eq' for input arguments of type 'struct'.

Error in ==> fullfile at 37 if (f(end)==fs) && (part(1)==fs),

Error in ==> COMPAREimages9mordad at 19 X_1 = imread(fullfile(doc1,Inputs1{I1}));

Answer 3

[Walter Roberson]

first_dir = 'E:\fake1';
second_dir = 'E:\fake2';

doc1 = dir(fullfile(first_dir, '*.jpg'));
doc2 = dir(fullfile(second_dir, '*.jpg'));
d_1 = length(doc1);
d_2 = length(doc2);
Inputs1 = {doc1.name}';
Inputs2 = {doc2.name}';
for I1 = 1:d_1
    first_base = Inputs1{I1};
    first_file = fullfile(first_dir, first_base);
    X_1 = imread(first_file);

      for I2 = 1:d_2
        second_base = Inputs2{I1};
        second_file = fullfile(second_dir, second_base);
        X_2 = imread(second_file);
        compare_images = imabsdiff(X_1,X_2);
        figure;
        imshow(compare_images);
        title( sprintf('"%s" vs "%s"', second_base, first_base) );
        %comp1 = imshowpair(X_1,X_2,'diff');
      end
  end

[Image Analyst]

Try this:

first_dir = 'D:\My Pictures\Misc';
second_dir = 'D:\My Pictures\Wallpapers';
fileList1 = dir(fullfile(first_dir, '*.jpg'));
fileList2 = dir(fullfile(second_dir, '*.jpg'));
numFiles1 = length(fileList1);
numFiles2 = length(fileList2);
baseFileNames1 = {fileList1.name}';
baseFileNames2 = {fileList2.name}';
for I1 = 1:numFiles1
	firstBaseName = baseFileNames1{I1};
	firstFullFileName = fullfile(first_dir, firstBaseName);
	image1 = imread(firstFullFileName);
	for I2 = 1:numFiles2
		fprintf('\nComparing image #%d of %d in folder 1 to #%d of %d in folder 2.\n', ...
			I1, numFiles1, I2, numFiles2);
		secondBaseName = baseFileNames2{I2};
		secondFullFileName = fullfile(second_dir, secondBaseName);
		image2 = imread(secondFullFileName);
		if isequal(size(image1), size(image2))
			compare_images = imabsdiff(image1,image2);
			% Sizes match.  Subtract them and display the differences.
			figure;
			imshow(compare_images);
			title( sprintf('"%s" vs "%s"', secondBaseName, firstBaseName) );
			%comp1 = imshowpair(X_1,X_2,'diff');
		else
			% Sizes do NOT match.  Print out that they don't match, then continue.
			fprintf('    Not comparable because sizes do not match.\n');
			[rows, columns, numColorChannels] = size(image1);
			fprintf('    %s = %d rows by %d columns by %d color channels.\n', firstFullFileName, rows, columns, numColorChannels);
			[rows, columns, numColorChannels] = size(image2);
			fprintf('    %s = %d rows by %d columns by %d color channels.\n', secondFullFileName, rows, columns, numColorChannels);
		end
	end
end

[90Anonymous]

@Image Analyst: Thank you so much for your support. It works fine now; for both scenarios.

Thanks again!