How do I select only 100 images in a folder of 200 images, according to a list of 100 different names ?

myFolder = 'putYourFolderPathHere';
filePattern = fullfile(myFolder, '*.tiff'); % Change the extension according to your file extension
tiffFiles = dir(filePattern);
fid = fopen('fileNameList.txt', 'rt'); % Assuming fileNameList.txt contains the names of the required images
idx = 1;
while feof(fid) == 0
    tline = fgetl(fid);
    fileNamesToBeInc{idx} = tline;
    idx = idx+1;
end
for k = 1:length(tiffFiles)
    baseFileName = tiffFiles(k).name;
    for i = 1:length(fileNamesToBeInc)
        if strcmp(fileNamesToBeInc{i}, baseFileName)
            fullFileName = fullfile(myFolder, baseFileName);
            temp{k} = imread(fullFileName);
        end
    end
end
imageArray = temp(~cellfun('isempty',temp)); % imageArray contains your image files
% Display all the selected images
montage(imageArray);

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Solene Frileux 2020-2-6

images_cent_names.txt

Thanks a lot to you both.

Everything works perfectly until the creation of temp, which cells are created but empty.

imageArray contains 1x0 cell

fullFileName does not seem to be created.

Here is my file .txt as asked.

Thanks again

Subhadeep Koley 2020-2-6

Yes, because your text file only contains the name of the images without their extension (e.g., .jpeg, .tiff, .png, etc.). Use the code below which appends the extension after the filenames.

myFolder = 'putYourFolderPathHere';
filePattern = fullfile(myFolder, '*.tiff'); % Change the '*.tiff' extension according to your file extension
tiffFiles = dir(filePattern);
fid = fopen('images_cent_names.txt', 'rt'); % Assuming fileNameList.txt contains the names of the required images
idx = 1;
while feof(fid) == 0
    tline = fgetl(fid);
    fileNamesToBeInc{idx} = tline;
    idx = idx+1;
end
fclose(fid);
temp = cell(1, length(fileNamesToBeInc));
% Appending extension
for k = 1:length(fileNamesToBeInc)
    fileNamesToBeInc{k} = [fileNamesToBeInc{k}, '.tiff']; % Change the '.tiff' extension also according to your file extension
end
% Reading files
idx = 1;
for k = 1:length(tiffFiles)
    baseFileName = tiffFiles(k).name;
    if ismember(baseFileName, fileNamesToBeInc)
        fullFileName = fullfile(myFolder, baseFileName);
        temp{idx} = imread(fullFileName);
        idx = idx + 1;
    end
end
imageArray = temp(~cellfun('isempty', temp)); % imageArray contains your image files

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Answer 2

J Chen 2020-2-4

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/503605-how-do-i-select-only-100-images-in-a-folder-of-200-images-according-to-a-list-of-100-different-name#answer_413747

编辑：J Chen 2020-2-4

Use the folllwoing command to get a structure that contains file information

listing = dir('*.jpg');

Use the folllwoing command to load the image files

for i = 1:100
    A(i) = imread(listing(i).name);
end

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Solene Frileux 2020-2-5

Hello J Chen,

Thanks a lot for your answer.

I think I was not rpecise enough and the other answer is more adequate.

Indeed, I need to select a hundred pictures out of 200, from a file containing the 200, knowing I have a txt file where the names of the 100 pictures I want is written.

Thanks for your help,

Solène

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