How to copy 30K images from folder to another according to the names in train and test text listes

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riad didou 2022-11-21

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https://ww2.mathworks.cn/matlabcentral/answers/1858098-how-to-copy-30k-images-from-folder-to-another-according-to-the-names-in-train-and-test-text-listes

评论： riad didou 2022-11-26

clear,clc;
path = addpath(genpath('D:\DOCTORAT 2019\MATLAB Codes\datasets\NUS-WIDE-OBJECT\image list'));
DIR = 'D:\Dataset\NUSWIDE-Obj\imagesnus30k';%Source file
D_dir = 'D:\Dataset\NUSWIDE-Obj\Images30K';%Destination file (Sould be 31-subfolder=Nbre of classes)
class = {'bear','birds','boats','book','cars','cat','computer','coral','cow','dog','elk','fish','flags','flowers','fox','horses','leaf','plane','rocks','sand','sign','statue','sun','tiger','tower','toy','train','tree','vehicle','whales','zebra'}; %31 classes
tr = textread('Train.txt','%s');
ts = textread('Test.txt','%s');
imgs = vertcat(tr,ts);
for i =1:size(imgs,1)
    disp(i)
    % img = imread([ DIR,'\\',string(imgs(i,1))]);
    imgname = (strcat(DIR, '\',string(imgs(i,1))));
    img_files{i} = char(imgname);
    fullFileName = fullfile(DIR, imgname);
    %imwrite(img,D_dir,'jpg')
    % figure(1),imshow(img);
    %pause();
    % imds = imageDatastore(img_files{i});
    % img = readimage(imds,I);
    % [img,info] = readimage(imds,2);
end

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riad didou 2022-11-21

Sorry, i have corrected the question.

The code is juste to have a visual description of the subfolders (classes).

Jan 2022-11-21

编辑：Jan 2022-11-21

What is a "visual description" and a "class"?

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采纳的回答

Jan 2022-11-21

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1858098-how-to-copy-30k-images-from-folder-to-another-according-to-the-names-in-train-and-test-text-listes#answer_1107138

在 MATLAB Online 中打开

With some guessing:

source = 'D:\Dataset\NUSWIDE-Obj\imagesnus30k';
dest   = 'D:\Dataset\NUSWIDE-Obj\Images30K';
tr = textread('Train.txt', '%s');
ts = textread('Test.txt', '%s');
list = [tr; ts];
for k = 1:numel(list)
    name = list{k};
    copyfile(fullfile(source, name), fullfile(dest, name));
end

@riad didou: It would be much easier to post a working answer, if you provide a small set of input data. It is hard to guess, how the subfolder name has to be obtained, if you do not explain, what the inputs of your function is.

With some bold guessing:

for k = 1:numel(list)
    name      = list{k};
    subfolder = fileparts(name);
    src       = fullfile(source, name);
    
    destfolder = fullfile(dest, subfolder);
    if ~isfolder(destfolder)
        mkdir(destfolder);
    end
    
    try
        copyfile(src, fullfile(dest, name));
    catch ME
        sr
        if ~isfile(src)
            error('File name not existing: %s', src)
        else
            rethrow(ME);
        end
    end
end

riad didou 2022-11-26

WOW..it works now, thank you so much

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更多回答（1 个）

Benjamin Thompson 2022-11-21

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https://ww2.mathworks.cn/matlabcentral/answers/1858098-how-to-copy-30k-images-from-folder-to-another-according-to-the-names-in-train-and-test-text-listes#answer_1107148

Use copyfile to copy a file to a new location. You could probably use arrayfun to more quickly add the full file path to the file names output from the dir function. Or, you could probably pass a function to arrayfun that does the full file path creation and the copyfile all in one.